21 results on '"Dzomeku, Beloved"'
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2. LEAF ANATOMICAL VARIATION IN RELATION TO STRESS TOLERANCE AMONG SOME WOODY SPECIES ON THE ACCRA PLAINS OF GHANA
- Author
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DZOMEKU BELOVED MENSAH
- Subjects
leaf anatomy ,stomatal dimension ,woody species ,Accra Plains ,drought stress ,Plant culture ,SB1-1110 ,Botany ,QK1-989 - Abstract
Leaf anatomical study was conducted on some woody species on the Accra Plains of Ghana. Leaf epidermal strips and transverse sections were mounted in Canada balsam and studied. The anatomical studies revealed numerous stomata on the lower epidermis of Azadirachta indica. The anatomical studies revealed the presence of thick cuticles, double-layered palisade mesophyll in most species and the presence of epidermal hairs in some species. Ficus capensis showed the presence of cystolith in the lower epidermis whereas Zanthoxylum zanthoxyloides showed the presence of mucilage gland in the upper epidermis. Epidermal cell of Chromolaena odorata are very large with undulating cell walls. The species studied had various adaptive anatomical features. The stomatal frequency of Azadirachta indica was very high. With the exception of Chromolaena odorata the stomatal frequencies of the species were relatively high. The stomatal dimensions showed that most of the species maintained constant stomatal length during the study period except Griffonia simplicifolia that increased the stomatal width during the afternoon. Unlike Morinda lucida, Griffonia simplicifolia and Chromolaena odorata, that showed reduction in the breadth of stomata, the other species maintained constant stomatal width.
- Published
- 2012
3. COMPARATIVE STUDY ON THE FIELD PERFORMANCE OF FHIA-01 (HYBRID DESSERT BANANA) PROPAGATED FROM TISSUE CULTURE AND CONVENTIONAL SUCKER IN GHANA
- Author
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DZOMEKU BELOVED MENSAH, QUAIN MARIAN DORCAS, BAM RALPH KWAME, and DARKEY SOLOMON KODJO
- Subjects
Banana (Musa spp.) ,micro-propagated ,sucker-derived ,in vitro ,Plant culture ,SB1-1110 ,Botany ,QK1-989 - Abstract
Micro-propagated plants of FHIA-01 (exotic hybrid dessert banana) were grown and their shoot-tip cultures were produced following standard method. Suckers were taken from the same plants as with the shoot-tip culture samples. The design was the randomly complete block. The plant density was 1667 plants/ha. Plants were fertilized at the rate of 40t/ha poultry manure per year split over 3 equal applications. Statistical analysis of data was performed with ANOVA. The field performance of in vitro propagated (tissue culture) tetraploid banana (FHIA-01) plants was compared with that of sucker-derived plants. In vitro-propagated plants established and grew faster, taller (240 cm) and bigger than the conventional sucker-derived plants. The former produced heavier bunches (39.1 t/ha) and could be harvested earlier. They however produced smaller number of fingers than the conventional sucker-derived plants. Significant differences were observed between the plant height and plant girth (48.6 cm) (at one metre above ground) at harvest. No significant difference was observed in bunch weight, number of hands, number of fingers and the number of leaves at harvest. The nutrient used in the Tissue culture medium may have played a significant role in the growth vigour of FHIA-01. It may also be having an influence on the performance of the hybrid. This influence may improve the yield of the crop thus improving the economy of farmers.
- Published
- 2012
4. Plantain-Tree Rubber Intercropping Systems Improved Productivity in the Tropical Humid Zone of Ghana, West Africa
- Author
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Tetteh, Erasmus Narteh, primary, Owusu Danquah, Eric, additional, Abunyewa, Akwasi Adutwum, additional, Melenya Ocansey, Caleb, additional, Boakye, Emmanuel Amoah, additional, Tuffour, Henry Oppong, additional, Logah, Vincent, additional, Twum-Ampofo, Kwame, additional, Dzomeku, Beloved Mensah, additional, Yeboah, Stephen, additional, and Barnes, Victor Rex, additional
- Published
- 2021
- Full Text
- View/download PDF
5. Field Performance of False Horn Plantain (Musa AAB) Corms Treated Mechanically and with Hormone Solutions
- Author
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Opata, John, primary, Dzomeku, Beloved Mensah, additional, Darkey, Solomon Kodjo, additional, Opoku, Enoch, additional, Bam, Raphael Kwame, additional, and Wünsche, Jens-Norbert, additional
- Published
- 2021
- Full Text
- View/download PDF
6. Eco-physiological studies on False Horn plantain
- Author
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Dzomeku, Beloved Mensah
- Subjects
Carotenoid ,Carotinoide ,Dürrestress ,mycorrhization ,Mykorrhizierung ,plantain ,Kochbanane ,drought stress ,ddc:630 ,Ertrag ,Agriculture ,yield - Abstract
West Africa suffers from climate uncertainty, high levels of variability, lack of access to real-time and future climate information, and poor predictive capacity are common barriers to adaptation though the region is identified as climate-change hotspot. The regions vulnerability is heightened by its overdependence on rain-fed agriculture, with its sensitivity to climate change and variability. Rain-fed agriculture contributes 30% of GDP and employs about 70% of the population, and it is the main safety net of the rural poor. Drought affects plantain production in West Africa resulting in high level of food insecurity among the vulnerable. Under rain-fed production, achievable yield of plantain landraces are 11.0t/ha while the potential yield is 20t/ha. Plantain breeding is limited due to the complex nature of the breeding process. Plantain plant itself is a giant herbaceous plant occupying 6m2 of land hence only 1667 could occupy a hectare of land. The production system is faced with a myriad of challenges from inadequate healthy planting materials at the time of plantain through the production system to post-harvest. Unlike bananas which are mainly produce by multinational companies under irrigation, plantain production is mainly by smallholder farmers under rain-fed agriculture. Whereas banana production under irrigation is efficient, plantain production under rainfed production is haphazard and unsustainable. Farm sizes range between 0.4 to 5ha. Major limiting factors of the rainfed system is drought resulting in low yields and economic loses. Our study seeks to understand the effects of drought on the physiological responses of plantain crop under rainfed production. Different experiments were conducted to study the responses of various cultivars to on-farm rapid production of healthy planting materials. The results revealed that drought seriously affects natural regeneration of plantain planting materials as such new approaches need to be used for sufficient production. As each plantain plant produces averagely 42 leaves before flowering and each leaf has at least one axillary bud, it presupposes that 42 suckers should be produced at harvest. However, at harvest only 12 healthy suckers are produced around each plantain plant. The approach is able to exploit the full potential of every sucker to generate healthy planting materials. This technique therefore could be used to set up commercial propagation system for plantain planting material production. The study revealed Apantu and hybrid plantain FHIA-21 to show same responses. Plantain farmers can easily produce in large quantities healthy plantain planting materials using sawdust and building their own humidity chambers near water source. The study also showed that there is the potential for farmers to use this technique for establishing commercial propagation centres to generate healthy planting materials. We also studied the physiological responses of Apantu crop to water regimes and natural mycorrhization of plantains. Also, study was conducted on the fruit maturity index and the effect of climate variability on fruit micronutrient content. The natural mycorrhization of plantain roots was the first to be reported on plantain in Ghana. During the study it was observed that plantain roots were naturally colonised by mycorrhizae. However, this phenomenon was cultivar specific; with Apantu roots more colonised compared to Apem. Sustainable intensification of plantain production could be achieved through the use of beneficial soil microbes in production. Conventional production systems, however, do not promote the survival of these microbes. The study further revealed that plantains respond to water stress by reduction in stomatal density, movement and reduction in leaf area. In addition, early stages of water stress had little effect on the final yield of the crop. The anatomical and physiological studies were challenges faced in laticiferous plant like the plantain. However, drought stress at advance stage of growth of plantain adversely affect yields. Our study also showed that fruit maturity index could vary with seasons. The various maturity indices used in plantain production could not be used under rain-fed conditions; especially angularity. The angularity index used was observed not to be appropriate in the dry season. The study also revealed high α-carotene levels with seasonality and maturity in plantain. The high levels of provitamin A in plantain fruits during the dry season coincided with high incidence of suns UV index. This finding could play a significant role in the plantain industry as a food security crop the vulnerable who could not afford the high provitamin A foods especially for children under five years. However, the retention and bioavailability of the carotenoid after cooking need to be studied. In conclusion all the chapters showed clear understanding of the behaviour of plantain under severe adverse environmental conditions and conclusions drawn to guide future production of the crop. Under climate change with its complexities, further studies on plantain is needed to improve productivity to achieve food security in West Africa. Westafrika leidet unter Klimaunsicherheit, hoher Veränderlichkeit, fehlendem Zugang zu Echtzeit- und zukünftigen Klimainformationen und mangelnder Vorhersagefähigkeit. Dies sind häufige Hindernisse für die Anpassung, obwohl die Region als Hotspot des Klimawandels identifiziert wurde. Die Anfälligkeit der Region wird durch ihre übermäßige Abhängigkeit von der Regenfeldbau-Landwirtschaft mit ihrer Empfindlichkeit gegenüber dem Klimawandel und ihrer Unbeständigkeit noch verstärkt. Regenfeldbau trägt 30% zum BIP bei und beschäftigt etwa 70% der Bevölkerung, und er ist das wichtigste Sicherheitsnetz der armen Landbevölkerung. Die Dürre beeinträchtigt die Kochbananenproduktion in Westafrika und führt zu einem hohen Maß an Ernährungsunsicherheit unter den verwundbaren Bevölkerungsgruppen. Bei Regenfeldbau liegt der erzielbare Ertrag von Kochbananen-Landrassen bei 11,0 t/ha, während der potenzielle Ertrag bei 20 t/ha liegt. Die Kochbananenzüchtung ist aufgrund der komplexen Natur des Züchtungsverfahrens begrenzt. Die Kochbananenpflanze selbst ist eine riesige krautartige Pflanze, die 6m2 Land einnimmt, so dass nur 1667 einen Hektar Land einnehmen könnten.Das Produktionssystem ist mit unzähligen Herausforderungen konfrontiert, von unzureichendem, gesundem Pflanzmaterial zum Zeitpunkt der Pflanzung über das Produktionssystem bis hin zur Nachernte. Im Gegensatz zu Bananen, die hauptsächlich von multinationalen Konzernen unter Bewässerung produziert werden, wird die Bananenproduktion hauptsächlich von Kleinbauern im Regenfeldbau betrieben. Während die Bananenproduktion unter Bewässerung effizient ist, ist die Kochbananenproduktion unter Regenfeldbau ungezielt und nicht nachhaltig. Die Betriebsgrößen liegen zwischen 0,4 und 5 ha. Ein wichtiger limitierender Faktor des Regenfeldsystems ist die Trockenheit, die zu niedrigen Erträgen und wirtschaftlichen Verlusten führt. Unsere Studie versucht, die Auswirkungen von Dürre auf die physiologischen Reaktionen der Kochbananenproduktion im Regenfeldbau zu verstehen. Es wurden verschiedene Experimente durchgeführt, um die Reaktionen verschiedener Sorten auf die schnelle Produktion von gesundem Pflanzmaterial im Betrieb zu untersuchen. Die Ergebnisse zeigten, dass Dürre die natürliche Regeneration von Kochbananenpflanzmaterial ernsthaft beeinträchtigt. Solche neuen Ansätze sollen für eine ausreichende Produktion genutzt werden. Da jede Kochbananenpflanze vor der Blüte durchschnittlich 42 Blätter produziert und jedes Blatt mindestens eine axillare Knospe hat, setzt dies voraus, dass bei der Ernte 42 Ableger produziert werden sollten. Bei der Ernte werden jedoch nur 12 gesunde Ableger um jede Kochbananenpflanze herum produziert. Dieser Ansatz ist in der Lage, das volle Potenzial jedes einzelnen Ablegers auszuschöpfen, um gesundes Pflanzmaterial zu erzeugen. Diese Technik könnte daher zur Einrichtung eines kommerziellen Vermehrungssystems für die Kochbananenpflanzmaterialproduktion genutzt werden. Die Studie ergab, dass Apantu und die Hybridsorte FHIA-21 dieselben Reaktionen zeigen. Kochbananen-Bauern können problemlos gesundes Kochbananen-Pflanzmaterial in großen Mengen produzieren, indem sie Sägemehl verwenden und ihre eigenen Feuchtigkeitskammern in der Nähe von Wasserquellen bauen. Die Studie zeigte auch, dass es ein Potenzial für Landwirte gibt, diese Technik für den Aufbau kommerzieller Vermehrungszentren zu nutzen, um gesundes Pflanzmaterial zu erzeugen. Wir untersuchten auch die physiologischen Reaktionen der Apantu-Pflanze auf Wasserregime und die natürliche Mykorrhizierung von Kochbananen Ausserdem wurden der Fruchtreife-Index und die Auswirkung der Klimavariabilität auf den Mikronährstoffgehalt von Früchten untersucht. Die natürliche Mykorrhizierung von Kochbananenwurzeln war die erste, über die über Kochbananen in die Ghana berichtet wurde. Während der Studie wurde beobachtet, dass Kochbananenwurzeln auf natürliche Weise von Mykorrhizapilzen besiedelt werden. Dieses Phänomen war jedoch kulturspezifisch, wobei Apantu-Wurzeln im Vergleich zu Apem stärker kolonisiert waren. Eine nachhaltige Intensivierung der Kochbananenproduktion könnte durch den Einsatz von nützlichen Bodenmikroben in der Produktion erreicht werden. Herkömmliche Produktionssysteme fördern jedoch nicht das Überleben dieser Mikroben. Die Studie ergab ferner, dass Kochbananen auf Wasserstress durch Verringerung der Stomataldichte, Bewegung und Verringerung der Blattfläche reagieren. Darüber hinaus hatten frühe Stadien von Wasserstress wenig Einfluss auf den Endertrag der Pflanze. Die anatomischen und physiologischen Studien stellten Herausforderungen dar, denen sich latiziferische Pflanzen wie der Kochbanane stellen mussten. Dürrestress im frühen Wachstumsstadium des Wegerichs beeinträchtigte jedoch die Erträge. Unsere Studie zeigte auch, dass der Fruchtreife-Index mit den Jahreszeiten variieren kann. Die verschiedenen Reifeindizes, die bei der Kochbananenproduktion verwendet werden, konnten unter regenreichen Bedingungen nicht verwendet werden; insbesondere die Winkligkeit. Es wurde festgestellt, dass der verwendete Winkligkeitsindex in der Trockenzeit nicht geeignet ist. Die Studie zeigte auch hohe α -Carotin-Gehalte mit Saisonalität und Reife bei Kochbananen. Die hohen Provitamin-A-Gehalte in Kochbananenfrüchten während der Trockenzeit fielen mit dem hohen Auftreten des UV-Index der Sonne zusammen. Dieser Fund könnte eine bedeutende Rolle in der Kochbananenindustrie als Nahrungsmittelsicherheitskultur für bedürftige Menschen spielen, die sich die Nahrungsmittel mit hohem Provitamin-A-Gehalt nicht leisten konnten, insbesondere für Kinder unter fünf Jahren. Allerdings muss die Rückhaltung und Bioverfügbarkeit des Carotinoids nach dem Kochen untersucht werden. Zusammenfassend lässt sich sagen, dass alle Kapitel ein klares Verständnis des Verhaltens von Kochbananen unter ernsthaft widrigen Umweltbedingungen und Schlussfolgerungen für die zukünftige Produktion der Kulturpflanze aufzeigten. Angesichts des Klimawandels und seiner Komplexität sind weitere Studien über Kochbananen erforderlich, um die Produktivität zu verbessern und die Ernährungssicherheit in Westafrika zu erreichen.
- Published
- 2020
7. Infectious Hepatitis B Negatively Impacts Lifestyles of Affected Individuals in Ejura-Sekyedumasi District of Ghana
- Author
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Tiimub, Benjamin Makimilua, primary, Dzomeku, Beloved Mensah, additional, Tiimob, Gideon Likida, additional, Tandoh, Richard, additional, Tiimob, Ernestina Laatman, additional, Nyapkaab, Foster Dokin, additional, Agyenta, Joan Jackline, additional, Baani, Isaac, additional, and Tiimob, Elisha Nyannube, additional
- Published
- 2020
- Full Text
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8. Banana defence responses toCosmopolites sordidusfeeding and methyl jasmonate application
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Bakaze, Elyeza, primary, Dzomeku, Beloved Mensah, additional, and Wünsche, Jens‐Norbert, additional
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- 2020
- Full Text
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9. Climate Change Enhanced Carotenoid Pro-Vitamin A Levels of Selected Plantain Cultivars
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Dzomeku, Beloved Mensah, primary, Wald, Julian P., additional, Wünsche, Jens Norbert, additional, Nohr, Donatus, additional, and Biesalski, Hans K., additional
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- 2020
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10. Myco-phytoremediation of mercury polluted soils in Ghana and Burkina Faso
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Blagodatsky, Sergey, primary, Ehret, Miriam, additional, Rasche, Frank, additional, Hutter, Imke, additional, Birner, Regina, additional, Dzomeku, Beloved, additional, Neya, Oble, additional, Cadisch, Georg, additional, and Wünsche, Jens, additional
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- 2020
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11. Understanding root, tuber, and banana seed systems and coordination breakdown : a multi-stakeholder framework
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Bentley, Jeffery W., Andrade-Piedra, Jorge, Demo, Paul, Dzomeku, Beloved, Jacobsen, Kim, Kikulwe, Enoch, Kromann, Peter, Kumar, P.L., McEwan, Margaret, Mudege, Netsayi, Ogero, Kwame, Okechukwu, Richardson, Orrego, Ricardo, Ospina, Bernardo, Sperling, Louise, Walsh, Stephen, Thiele, Graham, Bentley, Jeffery W., Andrade-Piedra, Jorge, Demo, Paul, Dzomeku, Beloved, Jacobsen, Kim, Kikulwe, Enoch, Kromann, Peter, Kumar, P.L., McEwan, Margaret, Mudege, Netsayi, Ogero, Kwame, Okechukwu, Richardson, Orrego, Ricardo, Ospina, Bernardo, Sperling, Louise, Walsh, Stephen, and Thiele, Graham
- Abstract
Vegetatively propagated crop (VPC) seed tends to remain true to varietal type but is bulky, often carries disease, and is slow to produce. So VPC seed needs to be handled differently than that of other crops, e.g., it tends to be sourced locally, often must be fresh, and it is less often sold on the market. Hence, a framework was adapted to describe and support interventions in such seed systems. The framework was used with 13 case studies to understand VPC seed systems for roots, tubers, and bananas, including differing roles and sometimes conflicting goals of stakeholders, and to identify potential coordination breakdowns when actors fail to develop a shared understanding and vision. In this article, we review those case studies. The framework is a critical tool to (a) document VPC seed systems and build evidence; (b) diagnose and treat coordination breakdown and (c) guide decision-makers and donors on the design of more sustainable seed system interventions for VPCs. The framework can be used to analyze past interventions and will be useful for planning future VPC seed programs.
- Published
- 2018
12. Banana defence responses to Cosmopolites sordidus feeding and methyl jasmonate application.
- Author
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Bakaze, Elyeza, Dzomeku, Beloved Mensah, and Wünsche, Jens‐Norbert
- Subjects
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JASMONATE , *BANANAS , *PLANTAIN banana , *OXIDANT status , *CHEMICAL synthesis , *CELL morphology , *CHLOROPHYLL - Abstract
Each year 25–75% of banana and plantain yields are lost because of rhizome damages caused by banana weevil (Cosmopolites sordidus) in growing regions of sub‐Saharan Africa. However, the specific plant defence response of the rhizome tissue in relation to the C. sordidus attack is unknown. Consequently, in this study, we evaluated whether plant defence substances in the rhizome are correlated with the degree of larval damage and whether applications of methyl jasmonate (MJ) elicit a greater induction of the plant defence potential against C. sordidus. Moreover, we attempted to reveal cellular modifications in response to the root feeding herbivore through histochemical staining. The banana cultivars "Km5" and "Mbwazirume" with tolerance and susceptibility to C. sordidus, respectively, were used in a pot experiment to evaluate percent rhizome damage, leaf chlorophyll content, total phenolic content (TPC), antioxidant capacity and cell morphology in response to C. sordidus attack and/or MJ applications compared to untreated control plants. We found that C. sordidus‐induced rhizome damage was 30% in the susceptible cultivar but less than 5% in the tolerant cultivar. The percent rhizome damage was not related to leaf chlorophyll content but showed a significant negative linear relationship to both TPC and antioxidant capacity. Larvae feeding induced a considerably greater increase of polyphenolic defence compounds in Km5 than in Mbwazirume; however, this response was opposite in the MJ treatment, suggesting that the phytohormone induced the susceptible plant to invest more into the synthesis of defence chemicals that in turn lead to reduced C. sordidus damage. Tissue staining demonstrated a greater deposition of lignin and suberin in C. sordidus challenged rhizome, presumably to seal off healthy tissue with a physical barrier from continued pest attack. It is concluded that MJ induces polyphenolics in susceptible Mbwazirume banana that reduced C. sordidus damage. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
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13. The Potential of Plantain Residues for the Ghanaian Bioeconomy—Assessing the Current Fiber Value Web
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Loos, Tim, primary, Hoppe, Marlene, additional, Dzomeku, Beloved, additional, and Scheiterle, Lilli, additional
- Published
- 2018
- Full Text
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14. Understanding root, tuber, and banana seed systems and coordination breakdown: a multi-stakeholder framework
- Author
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Bentley, Jeffery W., primary, Andrade-Piedra, Jorge, additional, Demo, Paul, additional, Dzomeku, Beloved, additional, Jacobsen, Kim, additional, Kikulwe, Enoch, additional, Kromann, Peter, additional, Kumar, P. Lava, additional, McEwan, Margaret, additional, Mudege, Netsayi, additional, Ogero, Kwame, additional, Okechukwu, Richardson, additional, Orrego, Ricardo, additional, Ospina, Bernardo, additional, Sperling, Louise, additional, Walsh, Stephen, additional, and Thiele, Graham, additional
- Published
- 2018
- Full Text
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15. Fruit and seed quality of okra [Abelmoschus esculentus (L.) Moench]as influenced by harvesting stage and drying method
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Bortey, Hillary Mireku, primary and Dzomeku, Beloved Mensah, additional
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- 2016
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16. Assessing Flood Tolerance Potential of Papaya Germplasm at the Juvenile Stage
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Osei-Bonsu, Isaac, primary, Dzomeku, Beloved, additional, Offei, Kwasi, additional, and Osei, Michael, additional
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- 2016
- Full Text
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17. Fruit and seed quality of okra [Abelmoschus esculentus (L.) Moench] as influenced by harvesting stage and drying method.
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Bortey, Hillary Mireku and Dzomeku, Beloved Mensah
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FRUIT quality , *SEED quality , *OKRA , *PLANT variety testing , *MOISTURE content of seeds , *FRUIT drying , *PHYSIOLOGY - Abstract
The influence of harvesting stages and drying methods on fruit and seed quality of okra [Abelmoschus esculentus (L.) Moench.] cultivar Asontem was studied to determine the optimum stage of harvest and suitable drying method. The fruit length and diameter progressively increased and reached its peak at 30 days after anthesis by recording 9.50 and 2.83cm respectively and subsequently decreased slightly. The higher seed moisture content (46.5%) was obtained at the early harvesting stage (10 day after anthesis (DAA) and decreased to as low as 22.1% at 50 DAA. Seed maturation and quality parameters were highly significant (p=0.05) at different harvesting stages. Maximum seed dry weight (4.1 g) occurred at 40 DAA regardless of the drying method. Maximum standard germination (77.0%) occurred at 50 DAA when seed moisture content was lowest (22.1%). The optimum stage for harvesting fruit of okra cultivar Asontem for high seed germinability was found to be ≥40 days after anthesis, followed by shade drying fruits before seed extraction. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
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18. The Use of Computers and Internet as Supplementary Source of Educational Material: A Case Study of the Senior High Schools in the Tema Metropolis in Ghana
- Author
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Dzomeku, Beloved M., primary, Amenyedzi, Frank W. K., additional, and Lartey, Mary N., additional
- Published
- 2011
- Full Text
- View/download PDF
19. CARBAP and innovation on the plantain banana in Western and Central Africa
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Tomekpe, Kodjo, primary, Kwa, Moïse, additional, Dzomeku, Beloved Mensah, additional, and Ganry, Jacky, additional
- Published
- 2011
- Full Text
- View/download PDF
20. RESPONSE OF SELECTED LOCAL PLANTAIN CULTIVARS TO PIBS (PLANTS ISSUS DE BOURGEONS SECONDAIRES) TECHNIQUE.
- Author
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DZOMEKU, Beloved Mensah, DARKEY, Solomon Kodjo, WÜNSCHE, Jens-Norbert, and BAM, Raphael Kwame
- Subjects
- *
PLANTAGO , *CULTIVARS , *EUKARYOTES , *PLANT fibers , *EUKARYOTIC cells - Abstract
One major constraint to plantain production has been inadequate healthy planting materials at the time of planting. Several technologies for multiplying healthy planting materials exist but could not meet farmers' demand. A study was conducted to assess the performance of various landraces plantain to plants issus de bourgeons secondaires (PIBS) technique. Five cultivars of Musa sapientum (Apantu (False Horn), Asamienu (True Horn), Oniaba (intermediate French plantain) and FHIA-21 (tetraploid hybrid plantain) were tested to determine their response to the PIBS technique. Sword suckers of each cultivar with weight of between 0.2-0.5 kg were prepared and buried in fine sawdust in a humidity chamber built using transparent polyethylene sheets. Results at harvest showed that removal of rooted sprouts started three weeks after planting and every week thereafter for eight weeks. The intermediate French plantain cultivar (Oniaba) produced the least average number (about 20) of healthy planting. Apantu (False Horn) produced an average of about 75 healthy planting materials. The hybrid FHIA-21 on the other hand generated an average of about 85 healthy planting materials. Asamienu (True Horn) produced the highest healthy seedlings of about 90 healthy planting materials. The results revealed that the leaf scar carries a primary bud at the intersection of each leaf sheath and several eyes along the entire length of the leaf sheath which could not have developed into suckers. However, with this technique the eyes could be activated to sprout as healthy planting materials. The technique proved as an efficient method of multiplying healthy planting materials for plantain and could thus be recommended for adoption not only by peasant farmers but also to others who could become commercial seed producers. But there will be a need for certification guidelines for seed growing systems. [ABSTRACT FROM AUTHOR]
- Published
- 2014
21. The Use of Computers and Internet as Supplementary Source of Educational Material: A Case Study of the Senior High Schools in the Tema Metropolis in Ghana.
- Author
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Amenyedzi, Frank W. K., Lartey, Mary N., and Dzomeku, Beloved M.
- Subjects
INTERNET in education ,COMPUTERS in education ,TEACHING aids ,EDUCATIONAL planning ,SECONDARY education - Abstract
This study was conducted to assess the computer and Internet usage as supplementary educational material to enhance quality education; help improve educational management and planning; how students use the computers and internet to facilitate their learning; how teachers in the Tema Senior High Schools use the computers and Internet to teach and guide students. Stratified sampling method was used to select students and teachers. The results showed that a significantly high percentage of respondent teachers (92%) were computer literate and 78% of respondent students also had basic knowledge in computer. However, less than 15% of these teachers used the internet as an innovative way of improving teaching and learning. Over 30% of the teachers used the computer mainly for research work. Less than 40% of student respondents used the computer and the Internet facility for entertainment, whereas less than 25% used it for research and learning. Less than 40% of respondent students used the Internet for e-mail and browsing. It was revealed that Internet and computers have helped students to achieve new things such as finishing assignments, solving problems, learning history of other countries, improving typing skills, and chatting with friends. There is no clear interaction between teachers and students through the use of Internet facilities. The Internet was not used for guidance. Despite the limited use of computers by teachers in their teaching, many agree that the computer has changed the way students learn. One fourth of teachers have received some form of training in the use of computers, with quite minimal training in the pedagogical integration of ICT. It appears that integration of ICT in Ghanaian school systems is a major step in promoting innovation. [ABSTRACT FROM AUTHOR]
- Published
- 2011
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