893 results on '"long day"'
Search Results
52. Michael Francis Land FRS, 1942–2020
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Dan-E Nilsson
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On board ,History ,Physiology ,Insect Science ,Animal Science and Zoology ,Aquatic Science ,Ancient history ,Long day ,Molecular Biology ,Ecology, Evolution, Behavior and Systematics ,Research vessel ,West africa - Abstract
[Graphic][1] Mike Land contemplating discoveries after a long day on board the British Research vessel RRS Discovery, 1987, in the Atlantic outside West Africa. Michael Francis Land – known to his colleagues and friends as Mike – was born in Dartmouth, UK, on 12 April 1942 and died
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- 2021
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53. Affective Relationships in Flow of Time and Space
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Avis Ridgway, Liang Li, and Gloria Quiñones
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Early childhood education ,Taste (sociology) ,media_common.quotation_subject ,Social environment ,Atmosphere (architecture and spatial design) ,Psychology ,Long day ,media_common ,Developmental psychology - Abstract
The aim of this chapter is to explore affective pedagogy that unfolds during a mealtime activity setting in a long day care (LDC) centre. Mealtimes are an important activity setting in early childhood education and care and they offer opportunities for educator’s development of affective relationships with infant-toddlers. Findings indicate that educators’ create an affective atmosphere within the flow of time and space of the mealtime activity. Often overlooked, flow and time, are also important components of educators’ affective relationships. Pedagogical strategies such as affective dialogues and encouragement involve educator’s guiding, modelling and encouraging toddlers to taste new foods and helping with cleaning tasks. Mealtimes provide a social environment for affective relationships and connections to be fostered.
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- 2021
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54. Changes in the expression of photoperiodic bulbing genes in response to increasing daylength in long-day and short-day onion varieties
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Md. Harun Ar Rashid, Brian Thomas, and Wei Cheng
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0106 biological sciences ,0301 basic medicine ,photoperiodism ,Germplasm ,fungi ,QK ,food and beverages ,Horticulture ,Biology ,Onion bulb ,Long day ,01 natural sciences ,03 medical and health sciences ,030104 developmental biology ,Genetics ,Gene ,010606 plant biology & botany - Abstract
Onion bulb initiation is photoperiod-dependent. Understanding this is crucial for adapting new varieties for growth at different latitudes, as well as aiding germplasm screening for the choice of current varieties. This study aims to gain further understanding of the molecular mechanisms involved in onion bulbing process based on the parallels with well-characterised functional clock genes in the Arabidopsis flowering pathway. A comprehensive set of diurnal quantitative expression experiments was carried out to investigate the bulbing response in two different onion varieties, namely Renate, a long-day variety and Hojem, a short-day variety under increasing intermediate day-lengths. All onion homologous to Arabidopsis flowering time genes showed clear diurnal expression patterns peaking at different times of the day for both long/short-day onions, indicating their role in daylength dependent bulbing process at molecular level. Under intermediate daylengths, AcFT1 expression level increased with daylengths in both varieties, while AcFT4 was expressed in all daylengths. The two genes showed complementary expression with AcFT4 peaking in the morning and AcFT1 in the evening in longer days. The results indicate that AcFT1 and AcFT4 are negatively co-regulated, but AcFT1 is the predominant regulator of bulb formation in response to daylength.
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- 2021
55. Pedagogical Awareness of Being Responsive
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Liang Li, Avis Ridgway, and Gloria Quiñones
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Responsivity ,Personal awareness ,digestive, oral, and skin physiology ,Psychology ,Long day ,Developmental psychology - Abstract
This chapter focuses on infant-toddler long day care educators’ pedagogical awareness of responsivity with toddlers in a nappy-change activity setting. Research suggests that educators who are attuned to infant-toddlers and develop trusting relations, show affective engagement. Educators’ personal awareness of being affectively responsive, when collaborating with co-educators is discussed. A nappy-change activity setting is analyzed as an encounter that transforms understandings about being pedagogically responsive. The findings indicate that affective responsivity involves educators’ awareness of, and sensitivity to, their institutional demands, which we call institutional responsivity.
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- 2021
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56. Introduction to Affective Pedagogies
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Liang Li, Avis Ridgway, and Gloria Quiñones
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Care setting ,Conceptualization ,Pedagogy ,Narrative ,Long day ,Relation (history of concept) ,Psychology - Abstract
The aim of this chapter is to introduce cultural–historical theory used throughout this book for theoretical and empirical conceptualization of affective pedagogies. What do we mean by affective pedagogies? In relation to our research, it became apparent that affective pedagogies are integral to the work of infant-toddler educators. We therefore make explicit and accessible, the eloquence and benevolence of affective pedagogies by using Hedegaard’s (Cultural-historical approaches to studying learning and development: perspectives in cultural-historical research, Singapore, Springer, pp 23–41: 2019) wholeness approach to the study of children birth-to-three (infant-toddlers) and educators’ pedagogical practices. We discuss two research projects undertaken in three different long day care settings in Victoria, Australia, revealing diverse visual narratives of affective pedagogies and their specialized nature. Our vision for this book is to conceptualize vibrant affective pedagogies and generate new knowledge of infant-toddler education and care.
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- 2021
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57. Toddlers’ Outdoor Play, Imagination and Cultural Formation
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Avis Ridgway, Liang Li, and Gloria Quiñones
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Physical development ,05 social sciences ,050301 education ,Long day ,Local community ,Aesthetics ,Enculturation ,Culturally responsive ,0501 psychology and cognitive sciences ,Sociology ,Toddler ,0503 education ,050104 developmental & child psychology ,Meaning (linguistics) - Abstract
Discussion on toddlers’ outdoor play practices in various cultural spaces is rare in literature. In Australia, toddlers’ physical development and well-being is promoted but less attention is given to cultural nuances of outdoor play. We ask the question: How does outdoor play impact on toddlers’ imagination and cultural formation? Conducted in three Australian long day care (LDC) sites, an ethically approved project “Studying babies and toddlers: Cultural worlds and transitory relationships” examines the process of three Australian toddlers’ outdoor enculturation. The concepts of imagination and play from Vygotsky’s cultural-historical theory are drawn upon in relation to Hedegaard’s institutional practices model, to link contextual relations between society, community and family. Cultural formation processes in toddlers’ outdoor play, we argue, are more completely understood when daily life across home and local community is acknowledged. Data findings illustrate complexity of movement and experimentations in cultural conditions, where different spaces hold possibilities for imaginative transformations in toddler’s play. Implications suggest toddlers’ imaginative and culturally responsive outdoor play aligns with availability of interested adult/peers, shared family and community values, and varied local spaces. In this way, affective and dynamic outdoor interactions imbue cultural formation of toddler’s play and imagination with local personal meaning.
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- 2021
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58. The Poetics of Female Resistance in Eugene O’Neill’s Long Day’s Journey into Night
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Olfa Gandouz Ayeb
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bepress|Arts and Humanities|English Language and Literature ,Poetics ,media_common.quotation_subject ,SocArXiv|Arts and Humanities ,General Medicine ,Art ,Theology ,Long day ,Resistance (creativity) ,bepress|Arts and Humanities ,SocArXiv|Arts and Humanities|English Language and Literature ,media_common - Abstract
The present paper is an attempt to study the female quest for freedom in Eugene O’Neill’s Long Day’s Journey into Night from a French feminist perspective. Indeed, Mary Tyrone resorts to body language as a form of resistance against gender and cultural confinement. French feminism will be deployed to understand female non-verbal subversive strategies. Luce Irigaray argues that language is male-dominated and male discourse misrepresents women. Accordingly, body language can be interpreted as a silent form of female resistance against patriarchal hegemony. It is the case of Mary who is irritated because of the male gaze and she uses madness as a silent language of resistance against female and ethnic stereotypes. Mary is a rebellious woman who defies her three men for being indifferent about her dilemma of disillusionment with the institution of marriage. She is treated as a wife, a mother or a daughter and she is often assigned the role of ‘the Angel in the House.’ French feminism will be used to understand the way O’Neill reshapes female identity and he calls for not linking female identity to the social roles. The aim is to study the non-verbal communication, the behavioural, kinetic, gestural and psychological profile of Mary. The paper will also focus on the hardships Mary faces and the ways she reconstructs female identity. The paper draws on the French feminist arguments about female madness as a form of resistance and it criticizes the conventional claim about madness as s form of weakness.
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- 2021
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59. Influence of photoperiod regime and exogenous plant growth regulators on crown bud formation in gentian.
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Samarakoon, Uttara C., Funnell, Keith A., Woolley, David J., and Morgan, Ed R.
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PLANTS , *PHOTOPERIODISM , *PLANT regulators , *BUD development , *GENTIANS , *VEGETATIVE propagation , *PLANT hybridization , *BOTANICAL specimens - Abstract
Following vegetative propagation of interspecific hybrids of Gentiana such as ‘Showtime Diva’ there can be a delay or failure in formation of crown buds, sometimes resulting in the death of the plant. The influence of photoperiod and exogenous applications of plant growth regulators were investigated in order to identify factors that could induce the formation of crown buds earlier in the season. The transfer of plant material to a naturally occurring short photoperiod increased the number of crown buds 5-fold compared to a long photoperiod. Application of gibberellic acid inhibited bud formation under all photoperiod regimes investigated. When applied under the normally inhibiting long photoperiod regime, ethephon tripled the number of crown buds and shoots compared to the control, with the promotional effects doubled when paclobutrazol or thidiazuron was also applied. When exogenous growth regulators, that promoted crown bud formation under a long photoperiod regime were applied under the naturally occurring short photoperiod regime, buds formed on storage roots instead of the normal position on the transition zone between the shoot and roots. The change in location of crown buds with growth regulator application and photoperiod regime is discussed in terms of changes in sink strength and carbohydrate accumulation. [ABSTRACT FROM AUTHOR]
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- 2015
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60. Effect of alternating day and night temperature on short day-induced bud set and subsequent bud burst in long days in Norway spruce.
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Olsen, Jorunn E., YeonKyeong Lee, and Junttila, Olavi
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CONIFER seed ,NORWAY spruce ,TEMPERATURE effect ,BUD development ,EFFECT of light on plants ,DORMANCY in plants ,SEEDS - Abstract
Young seedlings of the conifer Norway spruce exhibit short day (SD)-induced cessation of apical growth and bud set. Although different, constant temperatures under SD are known to modulate timing of bud set and depth of dormancy with development of deeper dormancy under higher compared to lower temperature, systematic studies of effects of alternating day (DT) and night temperatures (NT) are limited. To shed light on this, seedlings of different provenances of Norway spruce were exposed to a wide range of DT-NT combinations during bud development, followed by transfer to forcing conditions of long days (LD) and 18°C, directly or after different periods of chilling. Although no specific effect of alternating DT/NT was found, the results demonstrate that the effects of DT under SD on bud set and subsequent bud break are significantly modified by NT in a complex way. The effects on bud break persisted after chilling. Since time to bud set correlated with the daily mean temperature under SD at DTs of 18 and 21°C, but not a DT of 15°C, time to bud set apparently also depend on the specific DT, implying that the effect of NT depends on the actual DT. Although higher temperature under SD generally results in later bud break after transfer to forcing conditions, the fastest bud flush was observed at intermediate NTs. This might be due to a bud break-hastening chilling effect of intermediate compared to higher temperatures, and delayed bud development to a stage where bud burst can occur, under lower temperatures. Also, time to bud burst in un-chilled seedlings decreased with increasing SD-duration, suggesting that bud development must reach a certain stage before the processes leading to bud burst are initiated. The present results also indicate that low temperature during bud development had a larger effect on the most southern compared to the most northern provenance studied. Decreasing time to bud burst was observed with increasing northern latitude of origin in un-chilled as well as chilled plants. In conclusion, being a highly temperature-dependent process, bud development is strongly delayed by low temperature, and the effects of DT is significantly modified by NT in a complex manner. [ABSTRACT FROM AUTHOR]
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- 2014
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61. Changes in metabolite profiles in Norway spruce shoot tips during short-day induced winter bud development and long-day induced bud flush.
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Lee, Yeon, Alexander, Danny, Wulff, Jacob, and Olsen, Jorunn
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NORWAY spruce , *PLANT metabolites , *PLANT shoots , *BUDDING (Plant propagation) , *PHOTOPERIODISM , *PLANTS , *SEASONAL physiological variations - Abstract
The seasonal change in photoperiod is a primary environmental signal influencing tree growth. Long days (LD) sustain growth, whereas short days (SD) induce winter bud formation. In this respect, metabolomic responses have been studied to a limited extent only in conifers. Here we identified changes in metabolite profile in the conifer Norway spruce after transition to SD and following re-transfer to LDs inducing bud flush. After 1 week in SD initial changes in metabolite profile was visible but for the majority of compounds magnitudes of changes were small. However, the ascorbate content was strongly reduced and there were often temporary increases in several energy metabolism-related compounds, secondary metabolites, nucleosides, amino acids and lipids. After 8 weeks in SD substantial changes were observed; proper winter buds had high pools of ABA, antioxidants, flavonoids, terpenoids, phenylpropanoids, sugars, amino acids and lipids related to stress tolerance and hardening, and low levels of nucleosides and metabolites in energy metabolism. One week after re-transfer to LD the metabolome was generally relatively similar to under long-term SD, except e.g. increased urate and strongly decreased ABA and oxidized glutathione. Two weeks later, bud flush had occurred, and the metabolite profile resembled the situation before transfer to SD. This study thus revealed comprehensive modulation of the metabolome in Norway spruce in response to a day length shift, indicating substantially increased stress resistance under SD-induced bud set, and reversal upon bud flush in LD. [ABSTRACT FROM AUTHOR]
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- 2014
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62. 65 Junior doctor engagement in rota writing during the COVID 19 crisis
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Natasha Dunhill-Turner, Dervla Ireland, Alice Gargan, and Colin Mitchell
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Nursing ,Notice ,Coronavirus disease 2019 (COVID-19) ,Annual leave ,Leverage (negotiation) ,Intervention (counseling) ,Staffing ,Job satisfaction ,Long day ,Psychology - Abstract
The COVID-19 pandemic placed an unprecedented demand on the NHS. In response, high-intensity rotas were implemented with short notice. This project aimed to fairly and safely step down the COVID response rota as normal working patters resumed. Assessment A cross-sectional survey was distributed to doctors on the medical COVID rota. It explored their views on the step-down process. The majority of respondents (68%) had concerns including discrepancy between on calls and lack of opportunity to plan leave. A document of key themes in the feedback was prepared and presented to senior clinical managers. Intervention and Improvement The new rota produced ensured an even distribution of shifts and honoured pre-existing leave. The new rota was compliant and ran to completion for every trainee. Comparison of stepping down to the trust rota vs our new rota reduced inter-trainee shift variation. Night shift discrepancy SD reduced from 2.89 to 0.97, long day (ward cover) on-calls reduced from SD 3.57 to 1.12 and long day (take) shifts SD 0.98 to 0.56. Following implementation a second cross-sectional survey was distributed. 85% agreed or strongly agreed that there was sufficient staffing levels ‘on call’ and 80% agreed or strongly agreed that there was sufficient staffing levels on the wards. 95% found they were able to take their annual leave and 80% agreed or strongly agreed that there was an even distribution of on-call and night shifts. Conclusion The success of our project relied on good engagement with colleagues to collect a representative view for leverage in discussions with seniors, and produced a result that was fairer for trainees, sustainable, and preferable for rota coordinators and senior clinical management. Active collaboration in the rota design process will improve junior doctor engagement, well-being and job satisfaction.
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- 2020
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63. 33 Improving communication on surgical wards – a quality improvement project
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Francisco Regel Vilas Boas da Silva, Gargi Pandey, and Robert Nash
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Surgical speciality ,Paediatric surgery ,Quality management ,business.industry ,education ,Microsoft excel ,Audit ,Long day ,medicine.disease ,Patient safety ,Medicine ,In patient ,Medical emergency ,business - Abstract
Background A bleep is a useful device to contact doctors urgently however, if not used properly can lead to delay in patient care. During weekend shifts it was noticed that doctors were getting bleeps for patients they were not covering. Aims and objectives The aim of this Quality improvement project (QIP) was to improve communication within the Paediatric Surgery department. We composed a poster outlining the bleep numbers for every surgical ward and then evaluated its effectiveness. Methods This is a prospective QIP carried out on the surgical wards from September to October 2020 at GOSH. A questionnaire was used to collect data which was then input into Microsoft excel for analysis. After the initial audit a poster was composed outlining the on-call bleep numbers and surgical speciality numbers, and delivered to each surgical ward. This was then re-audited with another questionnaire to collect data on its effectiveness. Results A total of 25 ward staff were included in this QIP. In the initial audit no staff members knew the bleep for the short-day weekend SHO and most staff were unaware which wards were being covered by the long day and short day SHO. After implementing the poster the number of staff knowing the weekend short day SHO and long day SHO bleep improved to 60% and 80% respectively . There was also an improvement in the number of staff members knowing which SHO to contact for each ward/speciality (15/25). Conclusion The poster has shown to improve the ease of communication for staff on the surgical wards and thus patient safety. However there is still room for further improvement. Further clarity is required outlining whether the SHOs are split via wards or specialities as there is crossover. We also feel ciscos may be more beneficial for weekend cover.
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- 2020
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64. A proposed free radical explanation for the differential response of long-day and short-day plants to photoperiod
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Yannis Gounaris
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photoperiodism ,Free Radicals ,Photoperiod ,Plant physiology ,Plant Science ,Flowers ,Biology ,Long day ,Plant ecology ,chemistry.chemical_compound ,chemistry ,Gene Expression Regulation, Plant ,Plant biochemistry ,Botany ,Florigen ,Plant Proteins - Published
- 2020
65. Characteristics of New Ever-bearing Strawberry ‘Bokha’ Bred for Tropical and Subtropical zone Cultivation
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Hye Jin Kim, Ki Deog Kim, Nam Jung Hwan, Mi Ja Choi, Jong Nam Lee, Su-Jeong Kim, Hwang Bae Shon, Jong-Taek Suh, Su-Young Hong, and Yul Ho Kim
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0106 biological sciences ,Bearing (mechanical) ,Agronomy ,law ,Cultivar ,Subtropics ,010501 environmental sciences ,Biology ,Long day ,01 natural sciences ,010606 plant biology & botany ,0105 earth and related environmental sciences ,law.invention - Published
- 2018
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66. Temporal Aspects of Vernalization and Flowering in Long-day Storage Onion
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Christopher J. D’Angelo and Irwin L. Goldman
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0106 biological sciences ,Horticulture ,040103 agronomy & agriculture ,Genetics ,0401 agriculture, forestry, and fisheries ,04 agricultural and veterinary sciences ,Vernalization ,Biology ,Long day ,01 natural sciences ,010606 plant biology & botany - Abstract
Vernalization is an important step for floral initiation in onion (Allium cepa), but our understanding of the minimum vernalization time for long-day storage onions to gain floral competence is limited. A series of time course experiments were conducted over 4 years to determine the effects of vernalization time on sprouting, scape emergence, and flowering in ‘Cortland’, ‘Sherman’, and CUDH2107. We found an endodormancy period is present in the bulbs of these cultivars that lasts for 8 to 10 weeks. In addition, these three accessions achieve optimum uniform scape emergence after chilling for 14 weeks at 10 °C. On average, when bulbs were chilled for 14 weeks, it took 96.8 ± 15.6 days from planting to flowering in all accessions evaluated. As storage duration under vernalizing temperatures increases, the time to sprouting, scape emergence, and flowering decrease. Furthermore, the variance in time from sprouting to scape emergence was greatly reduced between 10 and 12 weeks of storage for ‘Cortland’ and CUDH2107, and between 12 and 14 weeks for ‘Sherman’. After 10 weeks of chilling, each additional week of storage resulted in an average decrease in time to flowering of 4.1%. We also observed large percentages of bulbs flowering without receiving any vernalization. This observation supports our finding that the relationship between vernalization and flowering in long-day storage onion is facultative rather than obligate. These findings help define the relationship between dormancy, vernalization, and flowering in long-day storage onion.
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- 2018
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67. Radiation Intensity and Quality from Sole-source Light-emitting Diodes Affect Seedling Quality and Subsequent Flowering of Long-day Bedding Plant Species
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Joshua K. Craver, Roberto G. Lopez, and Jennifer K. Boldt
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0106 biological sciences ,biology ,Bedding ,04 agricultural and veterinary sciences ,Horticulture ,Affect (psychology) ,biology.organism_classification ,Long day ,01 natural sciences ,law.invention ,Quality (physics) ,law ,Seedling ,040103 agronomy & agriculture ,Plant species ,0401 agriculture, forestry, and fisheries ,Environmental science ,Radiant intensity ,010606 plant biology & botany ,Light-emitting diode - Abstract
Previous research has shown high-quality annual bedding plant seedlings can be produced in controlled environments using light-emitting diode (LED) sole-source lighting (SSL). However, when only red and blue radiation are used, a delay in time to flower may be present when seedlings of some long-day species are subsequently finished in a greenhouse. Thus, our objective was to evaluate the effects of various radiation qualities and intensities under SSL on the morphology, nutrient uptake, and subsequent flowering of annual bedding plant seedlings with a long-day photoperiodic response. Coreopsis (Coreopsis grandiflora ‘Sunfire’), pansy (Viola ×wittrockiana ‘Matrix Yellow’), and petunia (Petunia ×hybrida ‘Purple Wave’) seedlings were grown at radiation intensities of 105, 210, or 315 µmol·m−2·s−1, achieved from LED arrays with radiation ratios (%) of red:blue 87:13 (R87:B13), red:far-red:blue 84:7:9 (R84:FR7:B9), or red:green:blue 74:18:8 (R74:G18:B8). Four-week-old seedlings were subsequently transplanted and grown in a common greenhouse environment. Stem caliper, root dry mass, and shoot dry mass of seedlings generally increased for all three species as the radiation intensity increased from 105 to 315 µmol·m−2·s−1, regardless of radiation quality. Similarly, stem length of all three species was generally shorter as the radiation intensity increased. Macro- and micronutrient concentrations were also generally lower as the radiation intensity increased for all three species. Pansy seedlings grown under R84:FR7:B9 flowered an average of 7 and 5 days earlier than those under R87:B13 and R74:G18:B8, respectively. These results provide information regarding the specific radiation parameters from commercially available LEDs necessary to produce high-quality seedlings under SSL, with radiation intensity appearing to be the dominant factor in determining seedling quality. Furthermore, the addition of far-red radiation can reduce time to flower after transplant and allow for a faster greenhouse turnover of some species with a long-day photoperiodic response.
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- 2018
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68. Do surgeon interviewers have human factor-related issues during the long day UK National Trauma and Orthopaedic specialty recruitment process?
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Amanda J Lee, D.S.G. Scrimgeour, C.R. Featherstone, Peter A. Brennan, Richard Arnett, J. Higgins, Jennifer Cleland, and V. Bucknall
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Male ,medicine.medical_specialty ,Interview ,Process (engineering) ,Specialty ,030230 surgery ,Long day ,03 medical and health sciences ,0302 clinical medicine ,Surveys and Questionnaires ,medicine ,Humans ,030212 general & internal medicine ,Surgeons ,Response rate (survey) ,Career Choice ,Health professionals ,business.industry ,Boredom ,Orthopedics ,Traumatology ,Education, Medical, Graduate ,Family medicine ,Female ,Surgery ,Clinical Competence ,Educational Measurement ,medicine.symptom ,business - Abstract
Purpose The role that human factors (HF) play in contributing to medical error is increasingly being recognised by healthcare professionals. Surprisingly, much less is known about the possible effects of HF including boredom, fatigue and organisational influences, on performance outside of the clinical environment such as examining or assessing candidates in other high stakes situations. Methods The authors used a validated 38 response questionnaire based around the HF analysis and classification system (HFACS) to assess factors including stress and pressure, care and support and working within the rules for surgeon interviewers at the UK national trainee selection process in Trauma and Orthopaedic surgery. Results 121 completed questionnaires were analysed (86% response rate). No statistically significant differences were found between interviewer experience, grade or role at the interview and the mean scores obtained for all four factor items. Overall interviewers had a positive experience during national selection with mean factor scores ranging from 3.80 to 3.98 (out of a maximum satisfaction score of 5). Conclusions Careful planning by organisations and recognising the importance of the human element are essential to ensure assessors are looked after properly during high stakes assessment processes. Our data suggests that a positive experience for examiners is likely to benefit candidate performance and contribute to a fair and reliable recruitment process. The relationship between examiner experience and candidate performance merits further investigation.
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- 2018
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69. Molecular basis of flowering under natural long-day conditions in Arabidopsis
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Nhu H Nguyen, Michael F. Covington, Young Hun Song, Sarah K. Hodge, He Huang, Nayoung Lee, Kentaro Shimizu, Takato Imaizumi, Ella R Taagen, Reiko Akiyama, Dianne Laboy Cintrón, Dae Yeon Hwang, Andrew J. Millar, Akane Kubota, Dmitri A. Nusinow, and Michael S. Kwon
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0106 biological sciences ,0301 basic medicine ,Time Factors ,Light ,Photoperiod ,Arabidopsis ,Flowers ,Plant Science ,Long day ,Flowering time ,01 natural sciences ,03 medical and health sciences ,chemistry.chemical_compound ,Phytochrome A ,Gene Expression Regulation, Plant ,Botany ,Morning ,biology ,Arabidopsis Proteins ,fungi ,food and beverages ,biology.organism_classification ,DNA-Binding Proteins ,030104 developmental biology ,chemistry ,Florigen ,Transcription Factors ,010606 plant biology & botany - Abstract
Plants sense light and temperature changes to regulate flowering time. Here, we show that expression of the Arabidopsis florigen gene, FLOWERING LOCUS T (FT), peaks in the morning during spring, a different pattern than we observe in the laboratory. Providing our laboratory growth conditions with a red/far-red light ratio similar to open-field conditions and daily temperature oscillation is sufficient to mimic the FT expression and flowering time in natural long days. Under the adjusted growth conditions, key light signalling components, such as phytochrome A and EARLY FLOWERING 3, play important roles in morning FT expression. These conditions stabilize CONSTANS protein, a major FT activator, in the morning, which is probably a critical mechanism for photoperiodic flowering in nature. Refining the parameters of our standard growth conditions to more precisely mimic plant responses in nature can provide a powerful method for improving our understanding of seasonal response.
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- 2018
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70. How ‘shared’ is shared reading: Book-focused infant–educator interactions in long day-care centres
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Jane Torr
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Shared reading ,Picture books ,Context effect ,media_common.quotation_subject ,05 social sciences ,050301 education ,Language acquisition ,Long day ,Literacy ,Vocabulary development ,Education ,Literacy development ,Pedagogy ,0501 psychology and cognitive sciences ,Psychology ,0503 education ,050104 developmental & child psychology ,media_common - Abstract
Children's language experiences in the first two years of life are inextricably connected with their current and future language and literacy development. Research has shown that mother–child shared reading of picture books is a practice that can promote this development. Little is known, however, about the shared reading experiences of infants attending early childhood education and care centres. This naturalistic study analysed the reading experiences of 10 infants observed during a three-hour period as they and their educators went about their typical activities in their early childhood education and care centres. Drawing on Halliday's systemic functional linguistic theory, which proposes a non-arbitrary relationship between language use and features of the material setting, this study analysed two aspects of the infants' shared reading experiences: the tenor (roles and relationships) realised in the educators' use of speech function, and the field (the topic or subject matter) realised in the vocabulary used. The manner in which these contextual variables are realised in the adult–child talk during shared reading affects the pedagogical potential of this practice. The findings reveal that the infants had little opportunity to initiate or participate in book-focused interactions with their educators, with implications for their language and literacy learning opportunities.
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- 2018
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71. What Keeps Early Childhood Teachers Working in Long Day Care?
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Ann Farrell, Susan Irvine, and Sharon McKinlay
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Early childhood education ,education ,05 social sciences ,050301 education ,Long day ,Education ,Nursing ,Political science ,Case study research ,Workforce ,Developmental and Educational Psychology ,0501 psychology and cognitive sciences ,Early childhood teacher ,Early childhood ,0503 education ,Social constructivism ,050104 developmental & child psychology - Abstract
RETAINING EARLY CHILDHOOD TEACHERS in long day care (LDC) is a pressing challenge for Australia's reform agenda in early childhood education and care (ECEC). Case study research with five early childhood teachers in LDC revealed individual and contextual factors that enabled and challenged the teachers to stay in LDC. Drawing on social constructivist approaches, the research contributes empirically based insights that support the recruitment and retention of early childhood teachers in LDC.
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- 2018
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72. Aphid Sequences: Turning Fibonacci Numbers Inside Out
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Josiah Reiswig, Samuel Erickson, and Adam M. Goyt
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Combinatorics ,Aphid ,Fibonacci number ,biology ,General Mathematics ,education ,010102 general mathematics ,0101 mathematics ,Long day ,biology.organism_classification ,01 natural sciences ,Mathematics - Abstract
As he rested in his garden after a long day of writing, Fibonacci [11] noticed a pair of rabbits peaking their heads out from behind the cabbage. Instantly, another pair of baby rabbits appeared, a...
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- 2018
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73. Influences on Parents’ Child Care Choices: A Comparative Analysis of Preschool and Long Day Care Users
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Naomi Sweller, Marianne Fenech, Sheila Degotardi, and Alissa Beath
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Early childhood education ,Child care ,05 social sciences ,050301 education ,Long day ,Developmental psychology ,NOMINATE ,0501 psychology and cognitive sciences ,Life-span and Life-course Studies ,Psychology ,0503 education ,Preschool education ,Socioeconomic status ,Social Sciences (miscellaneous) ,050104 developmental & child psychology - Abstract
This paper investigates Australian parents’ child care decision-making, including the motivational and influential factors that they attribute to their choice. Research demonstrates that child care decision making is multifaceted, involving a combination of child-related, personal, familial and contextual considerations. Existing research has tended to compare centre-based child care users with those using family-based options, and has not examined differences in the decision-making of parents who using different centre-based options. This study compared the characteristics and child care choices of parents using long day care (LDC) with those using preschool services to determine (1) whether they differ demographically and (2) if their reported child care decision-making motivations and influences diverge. Participants were 1418 parents who completed a nationally-distributed survey in which they provided demographic information, specified their reasons for choosing to use child care, and rated the importance of factors that influenced their child care choice. LDC parents had, on average, younger children, worked longer hours and resided in areas with lower socioeconomic resources than preschool parents. When compared with preschool parents, those using LDC were more likely to nominate pragmatic factors as influencing their child care decision making. External pressures, mainly related to educational outcomes, were more salient for preschool than LDC parents. However, both groups of parents similarly rated child-centred factors as the most important overall influence. Our findings add complexity to current understandings of parents’ child care decision making by showing that parents should not be treated as a homogenous group by policy makers, providers, and researchers.
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- 2018
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- View/download PDF
74. Promotion of Flowering from Far-red Radiation Depends on the Photosynthetic Daily Light Integral
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W. Garrett Owen, Qingwu Meng, and Roberto G. Lopez
- Subjects
0106 biological sciences ,photoperiodism ,media_common.quotation_subject ,Daily light integral ,Far-red ,04 agricultural and veterinary sciences ,Horticulture ,Radiation ,Biology ,Photosynthesis ,Long day ,01 natural sciences ,law.invention ,Promotion (rank) ,law ,040103 agronomy & agriculture ,0401 agriculture, forestry, and fisheries ,010606 plant biology & botany ,media_common ,Light-emitting diode - Abstract
Under natural short days, growers can use photoperiodic lighting to promote flowering of long-day plants and inhibit flowering of short-day plants. Unlike traditional lamps used for photoperiodic lighting, low-intensity light-emitting diode (LED) lamps allow for a wide array of adjustable spectral distributions relevant to regulation of flowering, including red (R) and white (W) radiation with or without far-red (FR) radiation. Our objective was to quantify how day-extension (DE) photoperiodic lighting from two commercially available low-intensity LED lamps emitting R + W or R + W + FR radiation interacted with daily light integral (DLI) to influence stem elongation and flowering of several ornamental species. Long-day plants [petunia (Petunia ×hybrida Vilm.-Andr. ‘Dreams Midnight’) and snapdragon (Antirrhinum majus L. ‘Oh Snap Pink’)], short-day plants [african marigold (Tagetes erecta L. ‘Moonsong Deep Orange’) and potted sunflower (Helianthus annuus L. ‘Pacino Gold’)], and day-neutral plants [pansy (Viola ×wittrockiana Gams. ‘Matrix Yellow’) and zinnia (Zinnia elegans Jacq. ‘Magellan Cherry’)] were grown at 20/18 °C day/night air temperatures and under low (6–9 mol·m−2·d−1) or high (16–19 mol·m−2·d−1) seasonal photosynthetic DLIs from ambient solar radiation combined with supplemental high-pressure sodium lighting and DE LED lighting. Photoperiods consisted of a truncated 9-hour day (0800–1700 hr) with additional 1-hour (1700–1800 hr, 10 hours total), 4-hour (1700–2100 hr, 13 hours total), or 7-hour (1700–2400 hr, 16 hours total) R + W or R + W + FR LED lighting at 2 μmol·m−2·s−1. Days to visible bud, plant height at first open flower, and time to first open flower (TTF) of each species were influenced by DLI, lamp type, and photoperiod though to different magnitudes. For example, plant height of african marigold and potted sunflower at first open flower was greatest under R + W + FR lamps, high DLIs, and 16-hour photoperiods. Petunia grown under R + W lamps, high DLI, and 10- and 13-hour photoperiods were the most compact. For all species, TTF was generally reduced under high DLIs. For example, regardless of the lamp type, flowering of african marigold occurred fastest under a high DLI and 10-hour photoperiod. Flowering of petunia and snapdragon occurred fastest under a high DLI, R + W + FR lamps, and a 16-hour photoperiod. However, only under high DLIs, R + W or R + W + FR lamps were equally effective at promoting flowering when used to provide DE lighting. Our data suggest that under low DLIs, flowering of long-day plants (petunia and snapdragon) occurs more rapidly under lamps providing R + W + FR, whereas under high DLIs, flowering is promoted similarly under either R + W or R + W + FR lamps.
- Published
- 2018
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75. Light response, oxidative stress management and nucleic acid stability in closely related Linderniaceae species differing in desiccation tolerance.
- Author
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Dinakar, Challabathula and Bartels, Dorothea
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NUCLEIC acids ,QUENCHING (Chemistry) ,PHOTOSYNTHESIS ,PLANTS ,OXIDATIVE stress ,ANTHOCYANINS - Abstract
In the present study, three closely related Linderniaceae species which differ in their sensitivity to desiccation are compared in response to light and oxidative stress defence. Lindernia brevidens, a desiccation-tolerant plant, displayed intense purple pigmentation in leaves under long-day conditions in contrast to Craterostigma plantagineum (desiccation tolerant) and Lindernia subracemosa (desiccation sensitive). The intense pigmentation in leaves does not affect the desiccation tolerance behaviour but seems to be related to oxidative stress protection. Green leaves of short-day and purple leaves of long-day plants provided suitable material for comparing basic photosynthetic parameters. An increase in non-photochemical quenching in purple leaves appears to prevent photoinhibition. Treatment with methyl viologen decreased the photochemical activities in both long-day and short-day plants but long-day plants which accumulate anthocyanins maintained a higher non-photochemical quenching than short-day plants. No differences were seen in the expression of desiccation-induced proteins and proteins involved in carbohydrate metabolism in short-day and long-day grown plants, whereas differences were observed in the expression of transcripts encoding chloroplast-localised stress proteins and transcripts encoding antioxidant enzymes. While the expression of genes encoding antioxidant enzymes were either constitutive or up-regulated during desiccation in C. plantagineum, the expression was down-regulated in L. subracemosa. RNA expression analysis indicated degradation of mRNA during desiccation in L. subracemosa but not in desiccation tolerant species . These results indicate that a better oxidative stress management and mRNA stability are correlated with desiccation tolerance. [ABSTRACT FROM AUTHOR]
- Published
- 2012
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76. Molecular cloning and expression of long-wavelength-sensitive cone opsin in the brain of a tropical damselfish
- Author
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Takeuchi, Yuki, Bapary, Mohammad Abu Jafor, Igarashi, Syugo, Imamura, Satoshi, Sawada, Yuji, Matsumoto, Mio, Hur, Sung-Pyo, and Takemura, Akihiro
- Subjects
- *
MOLECULAR cloning , *OPSINS , *GENE expression , *BRAIN , *POMACENTRIDAE , *OVARIES , *PHOTOPERIODISM , *PHYLOGENY , *CORAL reef ecology , *VITELLOGENESIS , *HISTOLOGY - Abstract
Abstract: Ovarian development of the sapphire devil, Chrysiptera cyanea, exhibits photoperiodism and is stimulated under long-day conditions. Previous studies suggest that red light is more effective than green and blue lights for inducing ovarian development. In addition, the extra-retinal photoreception involved in the ovarian development is suggested in this species. The present study aimed to clone the red-light-sensitive cone opsin (sdLWS) of this species, to demonstrate its expression in the brain, and to confirm the effectiveness of red light on the initiation of ovarian development. A phylogenetic analysis revealed that sdLWS belongs to the long-wavelength-sensitive opsin (LWS opsin) group, showing high identity (77–92%) with the LWS opsin of other fishes. RT-PCR showed that sdLWS is expressed in the eye, brain, and ovary. In situ hybridization indicated that sdLWS is expressed in the third ventricle periventricular area in the anterior hypothalamus. Exposing fish to long-day conditions of red light resulted in the appearance of vitellogenic oocytes in the ovary and an increase in the gonadosomatic index within 2weeks, suggesting that fish immediately undergo oocyte development under red light conditions. These results indicate that sdLWS is a possible candidate of deep brain photoreceptor molecule involved in photoperiodic ovarian development in the sapphire devil. [Copyright &y& Elsevier]
- Published
- 2011
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77. Åbningen af et filosofisk rum – Interview med Slavoj Žižek
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Glyn Daly
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Psychoanalysis ,biology ,Philosophy ,Personal relationship ,Miller ,Long day ,biology.organism_classification ,Communism ,Philosophical methodology - Abstract
In this interview with Glyn Daly, Slavoj Žižek talks about the birth of ‘The Society for Theoretical Psychoanalysis’, and his own overall philosophical approach. He touches upon his intellectual relationship to thinkers such as Martin Heidegger, Jacques Derrida, Immanuel Kant and of course Jacques Lacan. His sources of inspiration are not only these great theorists, but also his four year long day job as a minute taker for the Yugoslavian communist party, and his personal relationship to Jacques-Alain Miller who gives him his psychoanalytical upbringing.Oversat af Nicklas Weis Damkjær
- Published
- 2018
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78. Photoperiodic inhibition of potato tuberization: an update.
- Author
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Sarkar, Debabrata
- Abstract
Photoperiodic induction of tuberization in potato ( Solanum tuberosum L. Gp. Andigenum) under short days (SDs) is processed via miRNA (e.g. miR172)-mRNA (e.g. StBEL5) and gibberellin (GA) signaling pathways, with spatio-temporal activation of several transcription factors. There is good evidence that the photoreceptor phytochrome B (PHYB) inhibits tuberization under long days (LDs) by producing a graft-transmissible signal. Since it is mostly unknown how PHYB negatively regulates tuberization, the molecular identity of this PHYB-induced LD-inhibitory signal still continues to be elusive. A recent study reported PHYB-mediated photoperiodic regulation of GIGANTEA ( GI), a flowering-control gene of Arabidopsis thaliana and rice, in the leaves of a potato plant. Although GI is long assumed to be involved in the photoperiodic control of potato tuberization as an upstream gene of both CONSTANS and FLOWERING LOCUS T, its exact role could not be elucidated. Thus, its preferential PHYB-dependent upregulation under LDs compared to SDs concomitant with an upregulation of the gene ENT- KAURENOIC ACID OXIDASE ( KAO) that controls an early step in the gibberellin biosynthetic pathway provides an upstream molecular basis for tuberization inhibition in potato by LDs. The results are likely to revisit the roles of several signal molecules that are putatively implicated in the photoperiodic inhibition of tuberization. Given that GI constitutes an evolutionary conserved species-specific LD response pathway in the family Solanaceae, this review argues for an evolutionary basis of tuberization inhibition in potato inherent in its flowering response pathway. [ABSTRACT FROM AUTHOR]
- Published
- 2010
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79. Environmental regulation of dormancy, flowering and runnering in two genetically distant everbearing strawberry cultivars
- Author
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Ola M. Heide, Anita Sønsteby, Siv Fagertun Remberg, and Rodmar Isak Rivero
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photoperiodism ,Horticulture ,Phytotron ,Dormancy ,Environmental regulation ,Cultivar ,Biology ,Long day - Abstract
The environmental control of dormancy and its relation to flowering and runner formation is poorly understood in everbearing (EB) strawberry cultivars. We studied the topic by growing plants of the seed-propagated F1-hybrid ‘Delizzimo’ and the runner-propagated ‘Favori’ cultivar in daylight phytotron compartments under short day (SD) and long day (LD) conditions at temperatures of 6, 16 or 26 °C for 5 and 10 weeks. This was followed by forcing at 20 °C and 20-h photoperiod for 10 weeks with and without preceding chilling at 2 °C for 6 weeks. The results showed that dormancy in EB strawberry is regulated by a complex interaction of temperature, photoperiod and chilling in much the same way as known for seasonal flowering (SF) cultivars. Surprisingly, the EB cultivars exhibited the same SD dormancy induction response as SF cultivars, despite their opposite photoperiodic flowering requirements. However, at 26 °C the EB cultivars developed partial dormancy also under LD conditions. As known for SF cultivars, none of the EB cultivars became dormant at 6 °C regardless of daylength conditions, whereas they were increasingly sensitive to SD dormancy induction at intermediate and high temperatures. Similar to SF cultivars, the EB cultivars needed exposure to SD and relatively high temperatures for at least 10 weeks for attainment of the semi-dormant state that is typical for strawberry in general. As reported for SF cultivars, there was a close interrelation between the control of flowering, runner formation and dormancy also in the EB cultivars. ‘Favori’ had an obligatory LD requirement for flowering at 26 °C and was almost day neutral at 16 °C, while ‘Delizzimo’ behaved as a quantitative LD plant at both temperatures, and both cultivars were completely day neutral at 6 °C. Except for the stricter LD control of flowering in ‘Favori’, the overall environmental responses were quite similar in the two genetically distant cultivars. Chilling for six weeks at 2 °C was adequate for complete reversal of the constrained elongation of leaf petioles and flower trusses in dormant plants, but had little or no effect on the degree of flowering and runner formation.
- Published
- 2021
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80. The nature of floral signals in Arabidopsis. I. Photosynthesis and a far-red photoresponse independently regulate flowering by increasing expression of FLOWERING LOCUS T (FT).
- Author
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King, Rod W., Hisamatsu, Tamotsu, Goldschmidt, Eliezer E., and Blundell, Cheryl
- Subjects
- *
ARABIDOPSIS , *PHOTOSYNTHESIS , *PHOTOBIOLOGY , *FLOWERING trees , *PLANT physiology - Abstract
Arabidopsis flowers in long day (LD) in response to signals transported from the photoinduced leaf to the shoot apex. These LD signals may include protein of the gene FLOWERING LOCUS T (FT) while in short day (SD) with its slower flowering, signalling may involve sucrose and gibberellin. Here, it is shown that after 5 weeks growth in SD, a single LD up-regulated leaf blade expression of FT and CONSTANS (CO) within 4–8 h, and flowers were visible within 2–3 weeks. Plants kept in SDs were still vegetative 7 weeks later. This LD response was blocked in ft-1 and a co mutant. Exposure to different LD light intensities and spectral qualities showed that two LD photoresponses are important for up-regulation of FT and for flowering. Phytochrome is effective at a low intensity from far-red (FR)-rich incandescent lamps. Independently, photosynthesis is active in an LD at a high intensity from red (R)-rich fluorescent lamps. The photosynthetic role of a single high light LD is demonstrated here by the blocking of the flowering and FT increase on removal of atmospheric CO2 or by decreasing the LD light intensity by 10-fold. These conditions also reduced leaf blade sucrose content and photosynthetic gene expression. An SD light integral matching that in a single LD was not effective for flowering, although there was reasonable FT-independent flowering after 12 SD at high light. While a single photosynthetic LD strongly amplified FT expression, the ability to respond to the LD required an additional but unidentified photoresponse. The implications of these findings for studies with mutants and for flowering in natural conditions are discussed. [ABSTRACT FROM PUBLISHER]
- Published
- 2008
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81. Duration of vegetative and generative development phases in oat cultivars released since 1921
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Peltonen-Sainio, Pirjo and Rajala, Ari
- Subjects
- *
OATS , *PLANT genetics , *PLANT growth , *PLANT life spans - Abstract
Abstract: Genetic yield improvements in oat (Avena sativa L.) cultivars grown at high latitudes have resulted from marked changes in harvest index and yield components. This study was designed to investigate whether such changes have entailed alterations in duration of different developmental phases: vegetative, generative and grain filling phases and pre-anthesis generative sub-phases such as pre-fertile, pre-abortion, fertile pre-abortion, fertile and abortion sub-phases. We tested 14 oat cultivars released between 1921 and 1988 and 6 breeding lines. Ten randomly sampled plants of each oat entry were collected every 3–4d (18 times) from seedling emergence until pollination, and apical developmental stages were determined on the most advanced spikelet. Cumulated degree-days (Cdd) for each critical developmental stage and component phases were determined (5°C as a base temperature). At each measurement the number of leaves, green leaves and tillers on main shoot, apex length (mm) and height to the uppermost node, and stipule (cm) were recorded. Phyllochron (°Cdleaf−1) and relative elongation rates (RER) for height characterising traits were calculated. Grain filling was the only period altered by breeding, while no consistent effects on duration of vegetative and generative pre-anthesis phases and sub-phases were detected. Different developmental phases were interrelated: in some cases cultivars with similar duration of pre-anthesis phase, however, differed in duration of some pre-anthesis sub-phases. Their duration was not, however, consistently associated with measured growth and yield parameters. Likely long days that make the northern growing conditions exceptional and unique, substantially narrowed the differences among oat entries in duration of different developmental phases, thereby making their role also less critical in yield determination contrary to the situation in the main global temperate cereal production regions. [Copyright &y& Elsevier]
- Published
- 2007
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82. Portraits of Educators’ Language Practices Regarding Chinese Children’s English Learning in Australian Long Day Care Centres
- Author
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Jiangbo Hu
- Subjects
Portrait ,05 social sciences ,050301 education ,0501 psychology and cognitive sciences ,Gender studies ,Sociology ,Long day ,0503 education ,050104 developmental & child psychology - Published
- 2017
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- View/download PDF
83. Plant height control of obligate long day herbaceous annuals using plant growth retardants and light
- Author
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Mohammed Refdan Alhajhoj and Muhammad Munir
- Subjects
Plant growth ,Obligate ,Agronomy ,Plant Science ,Horticulture ,Herbaceous plant ,Biology ,Long day ,Biotechnology - Published
- 2017
- Full Text
- View/download PDF
84. Photoperiod sensitivity of very early maturing Sri Lankan rice for flowering time and plant architecture
- Author
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Duwini Padukkage, Gamini Senanayake, and Sudarshanee Geekiyanage
- Subjects
photoperiodism ,Horticulture ,very early maturing sri lankan rice accessions ,Agriculture (General) ,photoperiod sensitivity ,Agriculture ,Biology ,days to flowering ,General Agricultural and Biological Sciences ,Long day ,Flowering time ,S1-972 - Abstract
Unavailability of information on photoperiod sensitivity of traditional rice is a disadvantage in breeding rice for adaptation to changing climatic conditions and for optimum plant architecture. This experiment was conducted to address the above problem through determination of variation in days to flowering (DF) and morphological traits of twenty eight selected very early maturing Sri Lankan traditional rice accessions under three photoperiod conditions: short day (SD), day neutral (DN) and long day (LD). Although rice is considered to be a facultative short day plant, 12 accessions (2088, 2979, 4615, 3970, 4245, 2091, 3450, 3883, 4217, 6741, 3738 and 3677) flowered significantly late under SD over LD, while accession 4223 flowered significantly late under DN. Fifteen accessions (3943, 4042, 4734, 3693, 4513, 3845, 4390, 4144, 4220, 4223, 4237, 4387, Bg 300, At 308 and Bg 379-2) flowered significantly early under SD over LD. Four accessions (3457, 3884, 6305 and 4358) were non-responsive to photoperiod for flowering time. Plant height significantly increased only in accession 4217 under SD. Higher plant height under DN was obtained from At 308 and accession 3883. Photoperiod did not affect plant height in accession 4237 and Bg 379-2. LD only or both LD and DN conditions produced significantly higher plant height irrespective of photoperiod responsiveness for DF in rest 26 accessions. Variation in response to photoperiod for DF and plant architecture in very early maturing Sri Lankan rice indicates the potential diversity of genetic factors for photoperiod response for future use in rice breeding.
- Published
- 2017
85. Effect of Heating Temperature and Duration on Growth and Hypertrophy in Seed Bulb Production for Early Summer-Harvesting Cultivation of Allium × wakegi Araki
- Subjects
長日 ,dormancy ,鱗葉 ,long day ,休眠 ,division ,分球 ,scale leaf - Published
- 2017
86. Long-day and nitrogen conditioning of ‘Albion’ strawberry (Fragaria X ananassa Duch.) enhances off-season field production
- Author
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Edward F. Durner
- Subjects
0106 biological sciences ,Plasticulture ,photoperiodism ,Fragaria x ananassa ,chemistry.chemical_element ,04 agricultural and veterinary sciences ,Horticulture ,Biology ,Long day ,Plastic mulch ,01 natural sciences ,Nitrogen ,Agronomy ,chemistry ,040103 agronomy & agriculture ,Genetics ,0401 agriculture, forestry, and fisheries ,Conditioning ,Mulch ,010606 plant biology & botany - Abstract
Experiments conducted over 2 years evaluated photoperiod and nitrogen conditioning of ‘Albion’ strawberry (Fragaria x ananassa Duch.) plants for off-season field production in New Jersey, USA. Plants were conditioned the first year with natural days (ND, natural daylength) or long days (LD, natural daylength supplemented with 24 h incandescent radiation) for one week followed by 100 or 800 ppm N for 4 weeks under ND or LD. The second year, plants were conditioned with ND or LD for 1 week followed by 1 to 6 weeks of 100 or 800 ppm nitrogen (N) under ND or LD. After conditioning, plants were established in plasticulture. Ripe fruit were harvested from August through October both years. LD conditioning enhanced precocity by approximately 9 days in both studies. Productivity was also enhanced by conditioning with LD or elevated N. Plants grown on silver or white mulch were more productive than those grown on black mulch in the first study, but not the second.
- Published
- 2017
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- View/download PDF
87. The provision of ultra-processed foods and their contribution to sodium availability in Australian long day care centres
- Author
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Julie Woods, Kathleen E. Lacy, Karen J. Campbell, Caryl A. Nowson, Siobhan A O'Halloran, and Carley A. Grimes
- Subjects
0301 basic medicine ,Pediatrics ,medicine.medical_specialty ,Food Handling ,Medicine (miscellaneous) ,Recommended Dietary Allowances ,Long day ,Snack food ,Beverages ,Toxicology ,03 medical and health sciences ,medicine ,Humans ,Morning ,030109 nutrition & dietetics ,Nutrition and Dietetics ,business.industry ,Australia ,Public Health, Environmental and Occupational Health ,Infant ,Sodium, Dietary ,Child Day Care Centers ,Research Papers ,Cross-Sectional Studies ,Lunch ,Nutrition Assessment ,Child, Preschool ,Food processing ,Fast Foods ,Diet, Healthy ,Snacks ,business ,Nutritive Value - Abstract
ObjectivesTo categorize and assess all foods, beverages and ingredients provided over one week at Australian long day care (LDC) centres according to four levels of food processing and to assess the contribution of Na from each level of processing.DesignCross-sectional.SettingMenus for lunch, morning and afternoon snacks were collected from LDC centres. The level of food processing of all foods, beverages and ingredients was assessed utilizing a four-level food processing classification system: minimally processed (MP), processed culinary ingredients (PCI), processed (P) and ultra-processed (ULP).ResultsA total of thirty-five menus (lunch,n35; snacks,n70) provided to 1–5-year-old children were collected from seven LDC centres. Proportions of foodstuffs classified as MP, PCI, P and ULP were 54, 10, 15 and 21 %, respectively. All lunches were classified as MP. ULP foods accounted for 6 % of morning snacks; 41 % of afternoon snacks. Mean daily amount of Na provided per child across all centres was 633 (sd151) mg. ULP foods provided 40 % of Na, followed by P (35 %), MP (23 %) and PCI (2 %).ConclusionsCentres provided foods resulting in a mean total daily Na content that represented 63 % of the recommended Upper Level of Intake for Na in this age group. A significant proportion of ULP snack foods were included, which were the major contributor to total daily Na intake. Replacement of ULP snack foods with MP lower-Na alternatives is recommended.
- Published
- 2017
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88. Patriarchal Culture and Motherhood in Modern American Drama: Long Day’s Journey Into Night and The Glass Menagerie
- Author
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Eunjeong Seo
- Subjects
Literature ,business.industry ,media_common.quotation_subject ,Patriarchy ,Art ,Menagerie ,Long day ,business ,Feminism ,media_common ,Drama - Published
- 2017
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89. Flowering responses of North American strawberry cultivars
- Author
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K. Garcia and Chieri Kubota
- Subjects
0106 biological sciences ,photoperiodism ,Greenhouse ,04 agricultural and veterinary sciences ,Horticulture ,Biology ,Long day ,01 natural sciences ,Plant development ,Agronomy ,Shoot ,040103 agronomy & agriculture ,0401 agriculture, forestry, and fisheries ,Cultivar ,010606 plant biology & botany - Published
- 2017
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90. Influence of constant long days on ejaculate parameters of rabbits reared under natural environment conditions of Mediterranean area
- Author
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Roca, Jordi, Martínez, Silvia, Orengo, Juan, Parrilla, Inma, Vázquez, Juan M., and Martínez, Emilio A.
- Subjects
- *
ARTIFICIAL insemination of domestic animals , *ANIMAL breeding , *SPERMATOZOA , *GERM cells - Abstract
Abstract: Since rabbit bucks are usually housed under constant long daylight in artificial insemination (AI) centers, the main purpose of this study was to investigate whether constant long day influenced ejaculate parameters of rabbits housed in AI centers in the Spanish Mediterranean area. The study was carried out in Murcia, Spain (37° N). Twenty commercial hybrid male rabbits, aged between 14 and 15 weeks, were randomly allotted to two groups and housed under either natural day length (n=10, ND) or a constant 16-h daylight exposure of 16 h (n=10, CLD). Other management conditions, such as air temperature or reproductive handling, were identical for both groups. Two successive ejaculates were collected twice weekly from every male, and the first one was used to monitor ejaculate characteristics. Measurement of semen production, in terms of ejaculate and semen volume, sperm concentration and total sperm per ejaculate, and sperm quality, in terms of motility index, viability, morphology and acrosome integrity, was assessed in 783 ejaculates collected during 15 months (from October to December). No differences (P>0.05) in either semen production or sperm quality were shown among ejaculates collected from rabbits housed under ND and CLD conditions. A limited influence of season was observed (P<0.01); semen volume and motility index were highest and lowest, respectively, during summer. The increase of air temperature and humidity index (THI) had a significant detrimental effect (P<0.01) on both sperm production and quality parameters with a lag of 6 and 3 weeks, respectively. On the basis of these findings, annual variations of semen production and sperm quality in male rabbits seems more related to THI than to daylight length under conditions of AI management in the Mediterranean area of Spain. [Copyright &y& Elsevier]
- Published
- 2005
- Full Text
- View/download PDF
91. The temperature and photoperiod regulation of flowering and runnering in the strawberries, Fragaria chiloensis, F. virginiana, and F. x ananassa
- Author
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Serçe, Sedat and Hancock, James F.
- Subjects
- *
STRAWBERRIES , *ROSACEAE , *GENETIC polymorphisms , *AGROFORESTRY - Abstract
The temperature and photoperiod interactions of a number of elite genotypes of Fragaria virginiana, F. x ananassa, and F. chiloensis were studied in a series of growth chamber experiments. Several parameters were evaluated including: (1) the critical day-length (CDL) for flowering of short day (SD) genotypes under 8, 9, 10, and 11 h days at 18 °C, (2) the floral and runnering response of single and multiple cropping genotypes under 8 and 16 h days at 18 °C, and (3) the effect of temperature on flower bud formation in day-neutral (DN) genotypes held at 18, 22, 26, and 30 °C under 12 h day-lengths. The same number of flowers were initiated under 15 and 30 day induction periods, regardless of photoperiod. Frederick 9, LH 50-4 and RH 30 (F. virginiana), ‘Aromas’ and ‘Tribute’ (F. x ananassa) and CFRA 0368 of F. chiloensis flowered under both long days (LDs) and SDs; while Eagle-14 (F. virginiana), ‘Fort Laramie’ and ‘Quinalt’ (F. x ananassa) flowered only under long days. While those genotypes that flowered under both LD and SD can be considered day-neutral, they varied in the degree of floral response to the two photoperiods. CFRA 0368 and Frederick 9 produced the same number of flowers under both LDs and SDs, while ‘Aromas’ and ‘Tribute’ had more flowers under LDs and RH 30 had more under SDs. Of the DN genotypes, LH 50-4 and RH 30 were the only ones that produced runners under SDs. Flowering in ‘Fort Laramie’ was least affected of any genotype by high temperature, although its dry weight was negatively impacted. Based on these data, several genotypes show promise as breeding parents: CFRA 0368 and Frederick 9 to equalize flower production under LD and SD conditions, LH 50-4 and RH 30 to produce more freely runnering DNs, and ‘Fort Laramie’ for floral heat tolerance. [Copyright &y& Elsevier]
- Published
- 2005
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92. MAD WOMEN ON STAGE: FEMALE INSANITY IN EURIPIDES’ MEDEA, HENRIK IBSEN’S HEDDA GABLER and EUGENE O’NEILL’S LONG DAY’S JOURNEY INTO NIGHT
- Author
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Meltem Can
- Subjects
Literature ,Edebi Teori ve Eleştiri ,business.industry ,media_common.quotation_subject ,Edebiyat ,Art ,Long day ,Literature Theory and Criticism ,Insanity ,Stage (stratigraphy) ,Medea,Hedda Gabler,Günden Geceye,Kadın Deliliği ,Medea,Hedda Gabler,Long Day's Journey into Night,female insanity ,business ,media_common - Abstract
Tarih boyunca toplumsal cinsiyet rollerine karşı çıkan kadınlar ataerkil toplum tarafından çoğunlukla histerik, deli ya da tehlikeli olarak addedilmişlerdir. Kadınları delilikle bağdaştıran ve süregelen bu eğilim tiyatroda da yankı bulmuştur. Bu açıdan, bu çalışma Eupides’in Medea, Henrik İbsen’in Hedda Gabler ve Eugene O’Neill’in Günden Geceye adlı eserlerinde dayatılan normallik sınırlarını aşan aykırı kadınların resmedilişini inceleyecektir. Ekonomik olarak eşlerine bağımlı ve toplumsal beklentiler karşısında huzursuz hisseden Medea, Hedda ve Mary ataerkilliğe karşı koyuşlarıyla deliliğin sınırlarına itilen farklı dönemlerin trajik kadın kahramanlardır. Tutkularını ve görece özgürlüklerini feda ettikten sonra, bu alışılmadık kadın başkahramanlar dikte edilen toplumsal cinsiyet rollerini ve annelik imgesini reddedişlerinde buluşurlar ki bu karşı duruş Medea’nın öz oğullarını öldürmesine ve Hedda’nın hayatına son vermesine sebep olurken Mary’e gerçekle bağlantısını morfinle kesmekten başka çıkar yol bırakmaz., Throughout the history, women challenging their gender roles have mostly been labelled as hysterical, mad or dangerous by the patriarchal society. This long-seated tendency to associate women with insanity has also been echoed in drama. In that regard, this paper will explore the representation of nonconformist women who transgress the boundaries of imposed normality in Euripides’s Medea, Henric Ibsen’s Hedda Gabler and Eugene O’Neill’s Long Day’s Journey into Night. Financially dependent and restless with societal expectations, Medea, Hedda and Mary are tragic heroines of different eras resisting patriarchy that finally bring them on the verge of madness. After having sacrificed their aspirations or relative freedom for their marriages, those atypical female protagonists meet on a common ground in their repudiation of the dictated gender roles and motherhood image, which leads Medea to murder her own sons and Hedda to end her life while leaving Mary no choice than cutting off from reality through morphine.
- Published
- 2020
93. O'Neill, Eugene: Long Day's Journey into Night
- Author
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Rolf Geisler and Harald Kittel
- Subjects
media_common.quotation_subject ,Art ,Theology ,Long day ,media_common - Published
- 2020
- Full Text
- View/download PDF
94. Causes of Flowering of Long-Day Potato Species under Short-Day and Cold-Night Conditions.
- Author
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Markarov, A.
- Abstract
Flowering and tuber formation in high-mountain potato species Solanum sparsipilum Bitt., S. acaule Bitt., S. punae Juz., S. demissum Lindl., and a tuber crop Ullucus tuberosus Caldas. were investigated. All these species are characterized by absolute requirement of long day-length for flowering and short day-length for tuberization. Plants were grown under the following conditions: natural day-length with a photoperiod of 17 h or longer (treatment 1), short days with a photoperiod of 12 h and warm nights (15–20°C) (treatment 2), and short days with cold nights (5–6°C) (treatment 3). In the first treatment, plants produced flowers but no tubers. In the second treatment, plants produced tubers but no flowers. In the third treatment, plants produced both flowers and tubers. In leaves of S. acaule and U. tuberosus, the levels of gibberellins and ABA were determined. A high activity of gibberellins in the third treatment was similar to that in the first treatment, whereas high ABA activity in the third treatment was similar to that in the second treatment. It is supposed that cold nights retard the destruction of GA in plants during the dark period of diurnal cycle and ensure a permanently high level of gibberellins, which facilitates flowering of long-day species under short-day conditions. The high level of ABA is considered a plant response to short-day conditions, which is favorable for tuberization. [ABSTRACT FROM AUTHOR]
- Published
- 2002
- Full Text
- View/download PDF
95. One Long Day in Copenhagen
- Author
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Shyam Saran
- Subjects
business.industry ,Medicine ,business ,Long day ,Demography - Abstract
The Paris Agreement of 2015 was shaped by several rounds of negotiations in decades prior. Events in Copenhagen in 2009 were pivotal in defining negotiation dynamics between developing and developed countries. This chapter offers a vivid first-hand account of the pressures and intricacies of negotiations that year. It describes the uneasy coordination between India and China as they worked to represent the interests of the developing world under the umbrella of the BASIC (Brazil, South Africa, India, and China) grouping. It also lays bare the fundamental divergence in interests between the developed and developing worlds. It does so by detailing tense side negotiations on differentiated responsibilities in reducing emissions, the financial commitments of developed countries, and systems for transparent evaluation of commitments.
- Published
- 2019
- Full Text
- View/download PDF
96. Exposure to blue LED light before the onset of darkness under a long-day photoperiod alters melatonin secretion, feeding behaviour and growth in female dairy calves
- Author
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Watanabe Takashi, Shiro Kushibiki, Taketo Obitsu, Yui Takao, Mabrouk Elsabagh, Akiko Shinoda, Toshihisa Sugino, and Mon Mamiko
- Subjects
Light ,Color ,Biology ,Body weight ,Long day ,Melatonin ,03 medical and health sciences ,Animal science ,medicine ,Animals ,Melatonin secretion ,030304 developmental biology ,Blue light ,photoperiodism ,0303 health sciences ,0402 animal and dairy science ,04 agricultural and veterinary sciences ,General Medicine ,Feeding Behavior ,Darkness ,040201 dairy & animal science ,Circadian Rhythm ,Hay ,Cattle ,Female ,General Agricultural and Biological Sciences ,medicine.drug - Abstract
The effect of blue LED on melatonin secretion, feeding behaviour and growth was addressed in Holstein female dairy calves. In Exp.1, six animals (8 weeks old, 97 ± 4.1 kg BW) were exposed to yellow or blue LED for 2 hr before darkness over 7 days under a long-day photoperiod (LDPP). In Exp. 2, six animals (8 weeks old, 88.5 ± 4.8 kg BW) were exposed to blue light from a white LED all daytime or a yellow LED for 2 hr before the darkness of LDPP (blue light cut) over 3 weeks. In Exp. 1, blue light mildly suppressed melatonin secretion during the 2-hr treatment but did not affect the timing of the nightly melatonin rise. However, the rise in nighty melatonin levels was higher with yellow than blue LED. In Exp. 2, white LED completely suppressed melatonin secretion during the 2-hr treatment, but plasma melatonin concentrations were similar during the darkness. Grass hay intake, rumination time, frequency of water intake and body weight gain were higher in animals exposed to the yellow rather than the white LED. Overall results indicate that exposure to blue light from white LEDs under an LDPP suppresses melatonin secretion and might negatively impact the development of female dairy calves.
- Published
- 2019
97. Hd1 function conversion in regulating heading is dependent on gene combinations of Ghd7, Ghd8, and Ghd7.1 under long-day conditions in rice
- Author
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Hong Wu, Feixiang Qi, Zhanyi Zhang, Yongzhong Xing, Zhixin Li, and Bo Zhang
- Subjects
0106 biological sciences ,0301 basic medicine ,photoperiodism ,Genetics ,Heading (navigation) ,Transcript analysis ,Plant Science ,Biology ,Long day ,01 natural sciences ,03 medical and health sciences ,Plant development ,030104 developmental biology ,Molecular mechanism ,Agronomy and Crop Science ,Molecular Biology ,Gene ,Function (biology) ,010606 plant biology & botany ,Biotechnology - Abstract
Ghd7, Ghd8, Ghd7.1, and Hd1 are all pleiotropic genes regulating heading date, plant height, and yield in rice. Early studies showed that Hd1 promoted heading under short-day conditions (SD) and delayed heading under long-day conditions (LD). Recent studies found that Hd1 also promoted heading in some genetic backgrounds under LD. In this study, we developed a series of near-isogenic lines for Ghd7, Ghd8, Ghd7.1, and Hd1 in the Zhenshan 97 (ZS97) and Minghui 63 (MH63) backgrounds and recorded their heading dates. In the ZS97 background, Ghd7 alone triggered the conversion of Hd1 function from promoting to suppressing heading under LD. Ghd8 alone and Ghd7.1 alone did not promote but enhanced Ghd7-mediated Hd1 function conversion. In the MH63 background, Ghd7 alone and Ghd7.1 alone did not convert Hd1 function under LD, but they jointly promoted Hd1 function conversion. Conversion of Hd1 function occurred only under LD but not SD. Transcript analysis showed that downregulation or upregulation of Ehd1 and Hd3a by Hd1 in the lines under LD was determined by genetic background. In summary, multiple gene combinations of Ghd7, Ghd7.1, and Ghd8 and unknown genes caused conversion of Hd1 function. Moreover, the different gene combinations had a big difference in photoperiod sensitivities. These findings lay a solid foundation for further unveiling the molecular mechanism of Hd1 function conversion and provide guidance for heading date improvement in rice.
- Published
- 2019
- Full Text
- View/download PDF
98. Molecular Genetic Understanding of Photoperiodic Regulation of Flowering Time in Arabidopsis and Soybean.
- Author
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Luo, Xiao, Yin, Mengnan, and He, Yuehui
- Subjects
- *
FLOWERING time , *FLOWERING of plants , *ANGIOSPERMS , *ARABIDOPSIS , *SEED industry , *SOYBEAN - Abstract
The developmental switch from a vegetative phase to reproduction (flowering) is essential for reproduction success in flowering plants, and the timing of the floral transition is regulated by various environmental factors, among which seasonal day-length changes play a critical role to induce flowering at a season favorable for seed production. The photoperiod pathways are well known to regulate flowering time in diverse plants. Here, we summarize recent progresses on molecular mechanisms underlying the photoperiod control of flowering in the long-day plant Arabidopsis as well as the short-day plant soybean; furthermore, the conservation and diversification of photoperiodic regulation of flowering in these two species are discussed. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
99. Supermath: The Power of Numbers for Good and Evil
- Author
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Spencer Bagley
- Subjects
Power (social and political) ,Aesthetics ,media_common.quotation_subject ,Good and evil ,Art ,Long day ,media_common - Abstract
Superheroes wear masks to hide their secret identities. When Batman gets back to the Batcave after a long day of fighting crime, he takes off his mask to reveal that he’s actually been Bruce Wayne ...
- Published
- 2021
- Full Text
- View/download PDF
100. Characterization of Flowering-related Genes and Flowering Response in Relation to Blue Light in Gypsophila paniculata
- Author
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Tomoki Shibuya, Yoshinori Kanayama, Yuki Murakawa, Koji Nishidate, and Manabu Nishiyama
- Subjects
0106 biological sciences ,0301 basic medicine ,biology ,Plant Science ,Horticulture ,biology.organism_classification ,Long day ,01 natural sciences ,03 medical and health sciences ,030104 developmental biology ,Botany ,Gypsophila paniculata ,Gene ,010606 plant biology & botany ,Blue light - Published
- 2017
- Full Text
- View/download PDF
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