38 results on '"Afza R"'
Search Results
2. Anther culture in connection with induced mutations for rice improvement
- Author
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Chen, Q. F., Wang, C. L., Lu, Y. M., Shen, M., Afza, R., Duren, M. V., Brunner, H., Maluszynski, M., editor, and Kasha, K. J., editor
- Published
- 2002
- Full Text
- View/download PDF
3. Methodology for physical and chemical mutagenic treatments.
- Author
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Kodym, A., primary, Afza, R., additional, Forster, B. P., additional, Ukai, Y., additional, Nakagawa, H., additional, and Mba, C., additional
- Published
- 2012
- Full Text
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4. Mutagenic radiations: X-rays, ionizing particles and ultraviolet.
- Author
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Mba, C., primary, Afza, R., additional, and Shu, Q. Y., additional
- Published
- 2012
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5. Anther culture in connection with induced mutations for rice improvement
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Chen, Q.F., Wang, C.L., Lu, Y.M., Shen, M., Afza, R., Duren, M.V., and Brunner, H.
- Published
- 2001
- Full Text
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6. Salinity tolerant performance and genetic diversity of four rice varieties
- Author
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Xie, J.H., Zapata-Arias, F.J., Shen, M., and Afza, R.
- Published
- 2000
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- View/download PDF
7. Histology of somatic embryo initiation and organogenesis from rhizome explants of Musa spp.
- Author
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Lee, K.S., Zapata-Arias, F.J., Brunner, H., and Afza, R.
- Published
- 1997
- Full Text
- View/download PDF
8. Regeneration of Ensete ventricosum through somatic embryogenesis and adventitious buds
- Author
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Afza, R., van Duren, M., and Morpnrgo, R.
- Published
- 1996
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- View/download PDF
9. Induction and verification of autotetraploids in diploid banana (Musa acuminata) by in vitro techniques
- Author
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van Duren, M., Morpurgo, R., Dolezel, J., and Afza, R.
- Published
- 1996
- Full Text
- View/download PDF
10. Selection parameters for resistance to Fusarium oxysporum f. sp. cubense race 1 and race 4 on diploid banana (Musa acuminata Colla)
- Author
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Morpurgo, R., Lopato, S. V., Afza, R., and Novak, F. J.
- Published
- 1994
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11. GENETIC DIVERSITY WITHIN NATURAL POPULATIONS OF THE MEDICINAL PLANT RHYNCHOSIA MINIMA (L.) DC.
- Author
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MUHAMMAD, N, primary, ALI, N, additional, NISAR, M, additional, ABD_ALLAH, E. F., additional, HASHEM, A, additional, ALQARAWI, A, additional, ALDUBISE, A, additional, KHAN, U, additional, RAHMAN, I. U., additional, AFZA, R., additional, KHAN, A, additional, and AHMAD, H, additional
- Published
- 2018
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12. Effects of delayed soil and foliar N fertilization on yield and N₂ fixation of soybean
- Author
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AFZA, R., HARDARSON, G., ZAPATA, F., and DANSO, S. K. A.
- Published
- 1987
13. A FIRST EVER DETAILED ECOLOGICAL EXPLORATION OF THE WESTERN HIMALAYAN FORESTS OF SUDHAN GALI AND GANGA SUMMIT, AZAD JAMMU AND KASHMIR, PAKISTAN.
- Author
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KHAN, A. M., QURESHI, R., SAQIB, Z., MUNIR, M., SHAHEEN, H., HABIB, T., DAR, M. E. U. I., FATIMAH, H., AFZA, R., and HUSSAIN, M. A.
- Subjects
MOUNTAIN plants ,MONTE Carlo method ,PROTECTED areas ,PLANT communities - Abstract
The baseline ecological exploratory studies of floristically rich areas like the western Himalaya are very important to determine the diversity variations. Based on research gaps detected in ecological literature of the western Himalayan forests of Sudhan Gali and Ganga summit, the study area is revisited. Plots data was collected during 2016, and advanced multivariate statistical tools were used to analyze it. Some of multivariate tools including permutation test, indicator species analysis and variation partitioning (partial CCA) were used for the first time in the area. The results of hierarchical clustering and permutation test revealed that there were four ecologically meaningful vegetation groups (1. Berberis- Micromeria-Desmodium (BMD), 2. Pinus-Rubus-Persicaria (PRP), 3. Viburnum-Abies-Dryopteris (VAD) and 4. Sibbaldia-Thymus-Bistorta (STB) associations) in the area. A significant (p ≤ 0.05) pairwise compositional difference of all the detected plant communities was observed. The results of canonical correspondence analysis (net effect) depicted that all the studied environmental variables were significantly important, and explains about 73.1% variations in the species data. The higher (r > 0.9) species-environment pseudo-canonical correlations values for the first four CCA-axes revealed that the selected explanatory variables were determinants of the response (species) data variations, and the high values for the CCA axes 2 to 4 indicated that there was no single dominant environmental gradient in this part of the western Himalaya. The highest β diversity value of Himalayan alpine scrubland at the Ganga summit depicted that even a minor variation in environment affects the high altitude vegetation more rapidly than the vegetation of low elevation areas. The vegetation of the study area is under continuous deterioration, and this exploratory work can be used as a baseline study for the future management, sustainable use, and conservation programs in the area. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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14. Somatic embryogenesis from cultured leaf segments of Zea mays
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Conger, B. V., Novak, F. J., Afza, R., and Erdelsky, K.
- Published
- 1987
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15. Induction of Semi-Dwarf, Salt Tolerant Rice Mutants from a Tall Salt Tolerant Indica Landrace
- Author
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Afza, R., primary, Guzmann, M., additional, Zapata, F. J., additional, Tumimbang-Raiz, E., additional, Gregorio, G., additional, Forster, B. P., additional, and Mba, C., additional
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16. Factors associated with female age at first marriage: An analysis using all waves of the Pakistan Demographic and Health Survey
- Author
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Afza Rasul, Jamal Abdul Nasir, Sohail Akhtar, and Andrew Hinde
- Subjects
Medicine ,Science - Abstract
In conventional Muslim societies, fertility occurs within the marital union. Therefore, fertility outcomes depend on females’ age at first marriage (AFM). The present study explores the pattern of AFM in Pakistan, analyses of which are scarce in the literature. We aim to identify the factors associated with the AFM among currently married women in Pakistan. Demographic factors like birth cohort, and socioeconomic and cultural factors such as province and place of residence, education level, whether or not a woman had ever worked before marriage, ethnicity, and husband’s education were studied to explore the pattern of female AFM. Data were taken from the Pakistan Demographic and Health Surveys (PDHSs) of 2012–13 and 2017–18, and a comparison was made with the findings from the earlier PDHSs of 1990–91 and 2006–07. The analysis concentrates on women born between 1941 and 1992, aged between 25 and 49 years during the data collection periods. One-way analysis of variance (ANOVA) was used to assess the difference between the mean AFM for different sub-groups of the population. To identify the covariates that are associated with AFM multiple linear regression models were estimated. We observed a gradually increasing trend in female AFM over time among women born after 1950. The ANOVA results revealed that birth cohort, province, and place of residence, female education level, whether or not a woman had ever worked before marriage, ethnicity, and husband’s education were significantly associated with AFM (p-values < 0.05). In a multiple regression model, we found that the birth cohort significantly affects the AFM (p-value < 0.05). Having worked before marriage is associated with a statistically significant one-year rise in the AFM. Interestingly, all other ethnic groups have lower AFM compared with women whose mother language was Punjabi. Education has a highly significant effect on the AFM: the regression results revealed that uneducated females have a mean AFM 4 to 5 years lower than highly educated women. The results also revealed that educated men marry older women as compared to uneducated men. We conclude that the education of females and even males in Pakistan could lead to a rise in the female AFM.
- Published
- 2022
17. Radiosensitivity of sunflower inbred lines to mutagenesis
- Author
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Cvejić, Sandra, Cvejić, Sandra, Afza, R., Jocić, Siniša, Prodanović, Slaven, Miklič, Vladimir, Škorić, Dragan, Dragin, S., Cvejić, Sandra, Cvejić, Sandra, Afza, R., Jocić, Siniša, Prodanović, Slaven, Miklič, Vladimir, Škorić, Dragan, and Dragin, S.
- Abstract
For much of the past century, mutagenesis has gained popularity in plant genetics research as a means of inducing novel genetic variation. Induced mutations have been applied for the past 40 years to produce mutant cultivars in sunflower by changing plant characteristics that significantly increase plant yield and quality. The present study is focused on generating baseline data to elucidate the role of genotypic differences in the response of sunflower to induced mutagenesis with the aim of expanding the applicability of the use of induced mutant stocks in the genetic improvement of the crop and in its functional genomics. The strategy adopted was to estimate the optimal treatment conditions (doses of mutagens) through relating the extent of damage in seedling progeny to the exposure levels of the initiating propagates to mutagens. Seeds of fifteen elite sunflower genotypes of commonly used as breeding stocks and grown on commercial scales were treated with a range of mutagens: gamma rays (γ rays); fast neutrons and with ethyl-methane-sulphonate (EMS) at different treatment doses. The three mutagenic agents affected seedling height, reducing it with increasing dosage. Based on the mutagen damage on seedling height, the 50% and 30% damage indices (D50 and D30, respectively) were estimated for the 15 sunflower genotypes for the three mutagens. The D50 (D30) values for the sunflower lines ranged from 120 to 325 Gy (5 to 207 Gy) for gamma irradiation; 9 to 21 Gy (0.1 to 10 Gy) for fast neutrons and 0.69 to 1.55% (0.01 to 0.68%) concentration of EMS.
- Published
- 2011
18. Radiosensitivity of sunflower inbred lines to mutagenesis
- Author
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Cvejic, S., primary, Afza, R., additional, Jocic, S., additional, Prodanovic, S., additional, Miklic, V., additional, Skoric, D., additional, and Dragin, S., additional
- Published
- 2011
- Full Text
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19. Somatic Embryogenesis in Maize and Comparison of Genetic Variability Induced by Gamma Radiation and Tissue Culture Techniques.
- Author
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Novak, F. J., Daskalov, S., Brunner, H., Nesticky, M., Afza, R., Dolezelova, M., Lucretti, S., Herichova, A., and Hermelin, T.
- Subjects
CORN ,SOMATIC embryogenesis ,PLANT genetic engineering ,GAMMA rays ,PLANT tissue culture ,PLANT physiology & genetics - Abstract
Copyright of Plant Breeding is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 1988
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20. Effect of spikelet position on rice anther culture efficiency
- Author
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Afza, R., Shen, M., Zapata-Arias, F. J., Xie, J., Fundi, H. K., Lee, K. S., Bobadilla-Mucino, E., and Kodym, A.
- Published
- 2000
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21. Somatic Embryogenesis and Plant Regeneration in Suspension Cultures of Dessert (AA and AAA) and Cooking (ABB) Bananas (Musa spp.)
- Author
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Novak, F. J., Afza, R., Van Duren, M., Perea-Dallos, M., Conger, B. V., and Xiaolang, Tang
- Abstract
Proembryogenic calli were initiated from basal leaf sheaths and rhizome tissue on modified Schenk and Hildebrandt (SH) medium with 30 μM 3,6–dichloro–2–meth–oxybenzoic acid (Dicamba). Cell suspensions were maintained in half–strength Murashige and Skoog (MS) medium supplemented with 20 μM Dicamba. The development of somatic embryos was promoted in cell suspensions 3–4 weeks after subculture in liquid modified MS medium with 5 μM zeatin. Characteristic stages of embryonic development were recapitulated and histological examination confirmed bipolar organization of somatic embryos. Conversion into plantlets took place in double layer media system composed of solid half strength MS medium with 5 μM zeatin and 1 g/l charcoal and liquid, hormone–free, half strength MS medium. In four Musa genotypes several hundred plantlets were regenerated and transferred into soil where they continued to grow. Somatic embryogenesis represents a significant step in developing a new breeding strategy for apomictic banana and plantain species.
- Published
- 1989
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22. Induction and verification of autotetraploids in diploid banana (Musa acuminata) by in vitro techniques
- Author
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Duren, M., Morpurgo, R., Dolezel, J., and Afza, R.
- Abstract
Flow cytometry and stomata characteristics were used for screening ploidy levels in a large population of in vitro induced autopolyploids of the Musa acuminata breeding clone SH-3362. Culturing shoot tips in liquid medium stipplemented both with 5.0 mM colchicine for 48 hours or 30 µM oryzalin (3,5-dinitro-N4,N-dipropylsulphate) for seven days, both in combination with 2% (v/v) DMSO, resulted in a high (23.1% and 29.1%) frequency of non-chimeric tetraploids in the fourth vegetative generation. Although mixoploidy persisted in subsequent cycles of vegetative propagation, tetraploids as identified by flow cytometry remained solid non-chimeric during two more cycles. These autotetraploids were propagated for field testing. A rough pre-selection of regenerated V4 plants based on their stomata characteristics resulted in a population in which only 56.2% of the plants were solid tetraploids. The somatic polyploidization system reported here can be utilised for banana breeding programmes.
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- 1996
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23. Physicochemical condition of two nursery ponds at Iswarganj, Mymensingh
- Author
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Hossain, M Kabil, primary, Hossain, MD, primary, Rahman, M Habibur, primary, Afza, R, primary, and Khanom, DA, primary
- Published
- 1970
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24. The fecundity of Hilsa ilisha from the river Padma near Godagari of Rajshahi district
- Author
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Akter, Mst Arifa, primary, Hossain, MD, primary, Hossain, M Kabil, primary, Afza, R, primary, and Bhuyian, AS, primary
- Published
- 1970
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25. Phytoremediation of heavy metals spiked soil by Celosia argentea L.: effect on plant growth and metal stabilization.
- Author
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Hussain U, Afza R, Gul I, Sajad MA, Shah GM, Muhammad Z, and Khan SM
- Subjects
- Humans, Biodegradation, Environmental, Soil, Lead, Chromium, Plants, Soil Pollutants analysis, Metals, Heavy analysis, Celosia
- Abstract
Soil contaminated with heavy metals cause serious threat to the soil quality, biota, and human. The removal or stabilization of heavy metals through plants is an environment friendly approach. The aim of study was to assess the potential of Celosia argentea L. for the phytoremediation of heavy metals contaminated soil. Soil was spiked with different levels (0, 100, 200, 300, and 400 mg/kg) of chromium (Cr), copper (Cu), lead (Pb), and Zn (Zn). Experiment was carried out in greenhouse and impact of heavy metals was evaluated on plant by assessing the germination rate and plant growth. To evaluate either plant has potential to extract/stabilize the heavy metals, concentration in roots and shoot, translocation factor (TF), bioconcentration factor (BCF), and bioaccumulation factor (BAF) were determined. Application of heavy metals significantly affected the germination rate and minimum (26.6%) was observed in Cr spiked soil (400 mg/kg). Moreover, the biomass of C. argentea was also affected by the application of heavy metals. However, the concentration of heavy metals in roots and shoots were low. The BCF and BAF of C. argentea was lower than 1 except at lower levels of Pb and Zn, but the TF was greater than 1. The TF showed that plants have capability to transfer heavy metals to shoots once they are taken up by roots. However, based on the BCF and concentrations of heavy metals in shoots, it is evident that plant could play important role in the phytostabilization of heavy metals polluted soil., (© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
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- 2024
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26. Metformin HCl-loaded transethosomal gel; development, characterization, and antidiabetic potential evaluation in the diabetes-induced rat model.
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Nousheen K, Din FU, Jamshaid H, Afza R, Khan SU, Malik M, Ali Z, Batool S, Zeb A, Yousaf AM, Almari AH, Alqahtani S, Khan S, and Khan GM
- Subjects
- Animals, Mice, Rats, Metformin chemistry, Metformin pharmacology, Metformin therapeutic use, Hypoglycemic Agents chemistry, Hypoglycemic Agents pharmacology, Hypoglycemic Agents therapeutic use, Gels, Spectroscopy, Fourier Transform Infrared, Software, Delayed-Action Preparations, Diabetes Mellitus drug therapy
- Abstract
Herein we designed, optimized, and characterized the Metformin Hydrochloride Transethosomes (MTF-TES) and incorporate them into Chitosan gel to develop Metformin Hydrochloride loaded Transethosomal gel (MTF-TES gel) that provides a sustained release, improved transdermal flux and improved antidiabetic response of MTF. Design Expert® software (Ver. 12, Stat-Ease, USA) was applied for the statistical optimization of MTF-TES. The formulation with Mean Particle Size Distribution (MPSD) of 165.4 ± 2.3 nm, Zeta Potential (ZP) of -21.2 ± 1.9 mV, Polydispersity Index (PDI) of 0.169 ± 0.033, and MTF percent Entrapment Efficiency (%EE) of 89.76 ± 4.12 was considered to be optimized. To check the chemical incompatibility among the MTF and other formulation components, Fourier Transform Infrared (FTIR) spectroscopy was performed and demonstrated with no chemical interaction. Surface morphology, uniformity, and segregation were evaluated through Transmission Electron Microscopy (TEM). It was revealed that the nanoparticles were spherical and round in form with intact borders. The fabricated MTF-TES has shown sustained release followed by a more pronounced effect in MTF-TES gel as compared to the plain MTF solution (MTFS) at a pH of 7.4. The MTF-TES has shown enhanced permeation followed by MTF-TES gel as compared to the MTFS at a pH of 7.4. In vivo antidiabetic assay was performed and results have shown improved antidiabetic potential of the MTF-TES gel, in contrast to MTF-gel. Conclusively, MTF-TES is a promising anti-diabetic candidate for transdermal drug delivery that can provide sustained MTF release and enhanced antidiabetic effect.
- Published
- 2023
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27. Investigation of the treatment potential of Raloxifene-loaded polymeric nanoparticles in osteoporosis: In-vitro and in-vivo analyses.
- Author
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Guo Z, Afza R, Moneeb Khan M, Khan SU, Khan MW, Ali Z, Batool S, and Din FU
- Abstract
Osteoporosis (OP), is a systemic bone disorder associated with low bone mass and bone tissue corrosion. Worsening of the disease condition leads to bone delicacy and fracture. Various drugs are available for the treatment of OP, however they have limitations including poor solubility, bioavailability and toxicity. Herein, Raloxifene-loaded polymeric nanoparticles (RLX-PNPs) were developed and investigated for the treatment of OP with possible solutions to the above mentioned problems. RLX-PNPs were prepared by modified ionic gelation method followed by determining their particle properties. FTIR, DSC and PXRD analysis of the RLX-PNPs were performed to check chemical interaction, thermal behavior and crystallinity, respectively. In-vitro release profile of RLX-PNPs was checked in lab setting, whereas its pharmacokinetics was investigated in Sprague-Dawley rats, in-vivo. Finally, the treatment potential of RLX-PNPs was analyzed in OP induced animal model. The optimized PNPs formulation indicated 134.5 nm particle size, +24.4 mV charge and 91.73% % EE. TEM analysis showed spherical and uniform sized particles with no interactions observed in FTIR analysis. In-vitro release of RLX from RLX-PNPs showed more sustained release behavior as compared to RLX-suspension. Moreover, pharmacokinetic investigations showed a significantly enhanced bioavailability of the RLX-PNPs as well as reduced serum levels of alkaline phosphatase and calcium in OP induced rats when compared with RLX-Suspension after oral administration. Findings of this study suggested that the developed RLX-PNPs have the potential to treat OP due to sustained release and improved bioavailability of the incorporated drug., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2023 The Authors.)
- Published
- 2023
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28. Sublethal and transgenerational effects of synthetic insecticides on the biological parameters and functional response of Coccinella septempunctata (Coleoptera: Coccinellidae) under laboratory conditions.
- Author
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Afza R, Afzal A, Riaz MA, Majeed MZ, Idrees A, Qadir ZA, Afzal M, Hassan B, and Li J
- Abstract
Synthetic insecticides have been an inevitable part of plant protection throughout the world. Sublethal effects of these chemicals on beneficial insect species are one of the contemporary issues these days. Using the age-stage, two-sex life table model, this study evaluated the sublethal and transgenerational effects of six synthetic insecticides (imidacloprid, thiamethoxam, lambda-cyhalothrin, cypermethrin, chlorpyrifos and profenofos) commonly applied to winter vegetables, on the fitness and predation of the seven-spotted ladybeetle, Coccinella septempunctata , which is an efficient predator of aphids worldwide. According to results, all insecticides at their sublethal doses (LC
30 ) significantly suppressed the emergence of adults, adult weight, fertility and fecundity of the parental generation compared to control treatment. The larval stage was prolonged and oviposition, fecundity and total longevity of the adult beetles were decreased in unexposed progeny whose parents were exposed to sublethal doses of all insecticides. Moreover, the biological parameters of adults, including the intrinsic rate of increase ( r ), finite rate of increase ( λ ) and net reproductive rate ( R0 ) were significantly reduced when exposed to sublethal doses of insecticides. The predation rate of the F1 generation adults was also decreased after exposure to the sublethal doses of insecticides. However, chlorpyrifos, profenofos, lambda-cyhalothrin and cypermethrin exhibited more deleterious effects on the fitness and population parameters of beetles than imidacloprid and thiamethoxam., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2023 Afza, Afzal, Riaz, Majeed, Idrees, Qadir, Afzal, Hassan and Li.)- Published
- 2023
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29. Scutellaria petiolata Hemsl. ex Lace & Prain (Lamiaceae).: A New Insight in Biomedical Therapies.
- Author
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Mubin S, Rehman NU, Murad W, Shah M, Al-Harrasi A, and Afza R
- Abstract
The recent investigation was designed to explore Scutellaria petiolata Hemsl. ex Lace & Prain (Lamiaceae) whole plant in various extracts (methanol (SPM), dichloromethane (SPDCM), n-Hexane (SPNH), and aqueous (SPAQ) for a phytochemicals assessment, ESI-LC-MS chemical analysis, in vitro antimicrobials, and antioxidants and in vivo anti-inflammatory and analgesic potential. The qualitative detection shows that all the representative groups were present in the analyzed samples. The examined samples display the greatest amount of total flavonoid content (TFC, 78.2 ± 0.22 mg QE/mg) and total phenolic contents (TPC, 66.2 ± 0.33 mg GAE/g) in the SPM extract. The SPM extract proceeded to the ESI-LC-MS to identify the chemical constituents that presented nineteen bioactive ingredients, depicted for the first time from S. petiolata mainly contributed by flavonoids. The analyzed samples produced considerable capability to defy the microbes. The SPM extract was observed effective and offered an appreciable zone of inhibition (ZOI), 17.8 ± 0.04 mm against the bacterial strain Salmonella typhi and 18.8 ± 0.04 mm against Klebsiella pneumonia . Moreover, the SPM extract also exhibited 19.4 ± 0.01 mm against the bacterial strains Bacillus atrophaeus and 18.8 ± 0.04 mm against Bacillus subtilis in comparison to the standard levofloxacin (Gram-negative) and erythromycin (Gram-positive) bacterial strains that displayed 23.6 ± 0.02 mm and 23.2 ± 0.05 mm ZOI, correspondingly. In addition to that, the SPD fraction was noticed efficiently against the fungal strains used with ZOI 19.07 ± 0.02 mm against Aspergillus parasiticus and 18.87 ± 0.04 mm against the Aspergillus niger as equated to the standard with 21.5 ± 0.02 mm ZOI. In the DPPH (2,2-diphenyl-1-picrylhydrazyl) analysis, the SPM extract had the maximum scavenging capacity with IC
50 of 78.75 ± 0.19 µg/mL succeeded by the SPDCM fraction with an IC50 of 140.50 ± 0.20 µg/mL free radicals scavenging potential. Through the ABTS (2,2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) assay, the similar extract (SPM) presented an IC50 = 85.91 ± 0.24 µg/mL followed by the SPDCM fractions with IC50 = 182.50 ± 0.35 µg/mL, and n-Hexane fractions were reported to be the least active between the tested samples in comparison to ascorbic acid of IC50 = 67.14 ± 0.25 µg/mL for DPPH and IC50 of 69.96 ± 0.18 µg/mL for ABTS assay. In the in vivo activities, the SPM extract was the most effective with 55.14% inhibition as compared to diclofenac sodium with 70.58% inhibition against animals. The same SPM crude extract with 50.88% inhibition had the most analgesic efficacy as compared to aspirin having 62.19% inhibition. Hence, it was assumed from our results that all the tested samples, especially the SPM and SPDCM extracts, have significant capabilities for the investigated activities that could be due to the presence of the bioactive compounds. Further research is needed to isolate the responsible chemical constituents to produce innovative medications.- Published
- 2022
- Full Text
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30. Taxonomic investigation of selected rust fungi using scanning electron microscopy from Khyber Pakhtunkhwa, Pakistan.
- Author
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Ijaz M, Afza R, Zafar M, Hamayun M, Khan SM, Ahmad Z, Ahmad M, Khan SA, Shah R, and Yahya M
- Subjects
- Microscopy, Electron, Scanning, Pakistan, Fungi, Plant Diseases
- Abstract
Rusts comprises the largest natural group of plant pathogens including approximately 8% of all described Fungi. Rust fungi are extremely plant pathogens responsible for great losses to agriculture productivity. Rust species belong to several genera among which more than half are Puccinia species. In Pakistan, rust causes severe damage to agriculture crops. Current study was carried out to identify and characterize different rust species common in the research area through microscopy and Scanning electron microscopy (SEM) in Khyber Pakhtunkhwa, Pakistan. Morpho-anatomical investigation of each collected rust species was carried out using different standard protocols. The dimensions of spores were measured and snapped under a stereomicroscope. SEM was used to examine the shape, size, and ornamentation of the spores of each rust fungus. Results revealed documentation of seven rust fungi, that is, Melampsora euphorbiae, Phragmidium barclayi, Puccinia nepalensis, P. exhausta, P. menthae, Uromyces capitatus, and Uromyces decorates belong to four different genera, were recorded. SEM revealed that spermogonia and Aecia were missing in most of the rust fungus studied. Uredinia was found in a scattered, irregular, lengthy, and epidermis-enclosed form. Urediniospores were found to be ovulating, elongated, echinulate, globose to sub-globose, ellipsoid to ovoid, and globose to sub-globose. Telia was found as sub-epidermal, amphigenous, dispersed, minute, and spherical cells. Teliospores ranged in form from cylindrical to oblong. The germ pores were detected in both apical (top cell) and basal (bottom cell) idiosyncratic and pedicel-attached cells. The techniques used in the current investigation will aid mycologists in rust identification and microscopic characterization., (© 2021 Wiley Periodicals LLC.)
- Published
- 2022
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31. Phyto-ecological studies and distribution pattern of plant species and communities of Dhirkot, Azad Jammu and Kashmir, Pakistan.
- Author
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Mumshad M, Ahmad I, Khan SM, Abdullah, Rehman K, Islam M, Sakhi S, Khan SU, Afridi SG, Shams S, Azam S, Ahmad I, Afza R, and Ahmad Z
- Subjects
- Altitude, Asteraceae physiology, Botany, Lamiaceae classification, Lamiaceae physiology, Pakistan, Plant Physiological Phenomena, Plants classification, Soil chemistry
- Abstract
Plant species represent the hierarchical expression of vegetation as it is affected by various environmental gradients. We explored the plant species composition, distribution pattern, communities formation and their respective indicators under the influence of various environmental factors in the Dhirkot region, Azad Jammu and Kashmir. It was hypothesized that different environmental factors were responsible for the formation of various plant communities each with a distinct indicator. Quantitative ecological techniques were used for the sampling of vegetation. A total of 114 quadrats were established in 13 selected sampling sites. Phytosociological attributes were calculated for each plant species at each quadrat. Soil samples were collected and analyzed using different standard protocols. All the collected data were analyzed using Cluster Analysis, Indicator Species Analysis and Canonical Correspondence Analysis of PCORD and CANOCO software, respectively. A total of 145 plant species were recorded belong to 62 different families. Asteraceae and Lamiaceae were the dominant families, represented by 12 species each (8.27%). Cluster Analysis classify all the stations and plants into four major plant communities as 1) Olea-Desmodium-Prunilla community. 2) Abies-Zanthoxylum-Pteracanthus community 3) Cedrus-Elaeagnus-Hypericum community 4) Alnus-Myrsine-Ranunculus community. Soil pH, electrical conductivity, soil saturation, organic matter and altitude were the significant environmental factors that play its essential role in the plant species distribution, composition, formation of major plant communities and their respective indicators in the region. It is recommended that the identified indicator and rare plant species of the investigated area can further be grown for conservation and management purposes in in-situ environment., Competing Interests: The authors have declared that no competing interests exist.
- Published
- 2021
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32. Seed morphology using SEM techniques for identification of useful grasses in Dera Ghazi Khan, Pakistan.
- Author
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Ahmad S, Zafar M, Ahmad M, Ali MI, Sultana S, Rashid N, Butt MA, Shah SN, Ozdemir FA, Kutlu MA, Afza R, Usma A, and Nazish M
- Subjects
- Epidermal Cells ultrastructure, Microscopy, Electron, Scanning, Pakistan, Plant Epidermis ultrastructure, Plant Stomata ultrastructure, Poaceae anatomy & histology, Poaceae classification, Seeds ultrastructure
- Abstract
In recent study, 15 taxa of family Poaceae from Dera Ghazi Khan were investigated for morphological characterization of seeds. Scanning electron microscopy (SEM) was utilized to study morphological features of grass seeds. Moreover, economic importance of studied taxa has been discussed in present research. Grass seeds or caryopsis were collected in their mature state from different areas of Dera Ghazi Khan. Collected caryopses were subjected to SEM to investigate surface sculpture, epidermal cell shape, and cell wall patterns. Caryopsis shape observed was elliptic to oval. Also, the morphology of plant is being investigated. Cell wall pattern observed was straight and wavy. Surface sculpturing varies from smooth to reticulate. Epidermal cell shape was either wavy or irregular. Hilum position is terminal in all species. Epidermal cell structure and cell wall pattern was not observable in some species. Major variations among studied taxa were observed in terms of seed surface pattern. Five types of caryopsis surface pattern were observed namely, striate, smooth, reticulate, papillate, and granulate. Investigated taxa illustrated variations in terms of studied morphological features. Utilization of SEM has been proved very helpful in exploring seed morphological features. These observed features can aid in delimitation and identification of various grass taxa. Recent research recommends the utilization of SEM for caryopsis morphology to solve the identification issue of problematic grass genera., (© 2019 Wiley Periodicals, Inc.)
- Published
- 2020
- Full Text
- View/download PDF
33. Taxonomic significance of cypsela morphology in tribe Cichoreae (Asteraceae) using light microscopy and scanning electron microscopy.
- Author
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Ayaz S, Ahmad M, Zafar M, Ali MI, Sultana S, Mustafa MRU, Kilic O, Çobanoğlu DN, Demirpolat A, Ghani A, Afza R, Ahmad K, Munir M, Kalsoom N, and Raza J
- Subjects
- Microscopy, Microscopy, Electron, Scanning, Asteraceae anatomy & histology, Asteraceae classification, Seeds ultrastructure
- Abstract
The current study deals with the detailed morphology investigation of eight Cypsela species belonging to tribe Cichoreae. The different Cypsela types were described, explained, compared, and their taxonomic significance is discussed in detail. Light microscopy (LM) and scanning electron microscopy (SEM) have been used to highlight quantitative and qualitative characters of underestudied species. Cypsela exhibit great diversity in macro and micromorphological features such as shape, color, length, width, anticlinal and periclinal wall patterns, surface patterns, epicuticular projections. Majority of Cypsela species were brownish in color and their size ranges from 2.16 to 3.98 mm in length and 1.16 to 0.82 mm in breadth. A great diversity in Cypsela shapes like oblanceolate to obovate, obovoid to cylindrical, obvate, narrowly lanceolate were observed. Most of the platelets having epicuticular projections were observed. The surface pattern on the cypsela surface varied from rugose papillate, verrucose papillate, and striated. On the basis of considerable variations observed, the present study can assist as useful constraints at various taxonomic levels. The aim of the present study is to provide a comprehensive description of the Cypsela morphology and to determine the extent to which these micro morphological data can be used as a taxonomic character to delineate various taxa belonging to the tribe Cichoreae., (© 2019 Wiley Periodicals, Inc.)
- Published
- 2020
- Full Text
- View/download PDF
34. Microscopic and phytochemical techniques as a tool for authentication of herbal drug chiraita: Swertia cordata (G. Don) C.B. Clarke.
- Author
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Rashid S, Ahmad M, Zafar M, Sultana S, Ahmad SN, Yaseen G, Ozdemir FA, and Afza R
- Subjects
- Antioxidants metabolism, Inhibitory Concentration 50, Pakistan, Plants, Medicinal ultrastructure, Drug Contamination prevention & control, Plant Extracts chemistry, Plants, Medicinal chemistry, Swertia chemistry, Swertia ultrastructure
- Abstract
Swertia cordata (G. Don) C.B. Clarke is one of the potential medicinal plants extensively used in eastern traditional medicine such as Unani, Ayurveda, Siddha, and in traditional Tibetan and Chinese medicine. S. paniculata is the common adulterant of S. cordata at herbal shops and markets but S. paniculata is also used in number of herbal formulations. The present study was conducted to use microscopic, pharmacognostic, and phytochemical techniques as a tool for the authentication of herbal drug chiraita (S. cordata). In herbal markets, mixing, adulteration, and use of spurious materials as substitute have become a major concern for herbal practitioners, local user, and industry for reasons of safety and efficacy. Therefore, authentication of medicinal plants is of utmost importance at each level of drug research. In the present study, anatomical features of two species showed a great diversity, as irregular epidermal cells and nonglandular, unicellular trichomes were found in S. cordata while in S. paniculata epidermal cells were hexagonal in shape and trichomes were A-shaped. Antioxidant activity of two species showed a great variation where IC
50 value recorded for S. cordata was 208 μg/mL, while for S. paniculata IC50 was 624 μg/mL. The study can serve as an important source of information to achieve the authenticity and to evaluate the quality and purity of the plant material in accordance to WHO guidelines. As this species is greatly exploited, so conservation is highly recommended., (© 2019 Wiley Periodicals, Inc.)- Published
- 2019
- Full Text
- View/download PDF
35. Understanding women's, caregivers', and providers' experiences with home-based records: A systematic review of qualitative studies.
- Author
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Magwood O, Kpadé V, Afza R, Oraka C, McWhirter J, Oliver S, and Pottie K
- Subjects
- Female, Humans, Caregivers statistics & numerical data, Electronic Health Records, Health Personnel statistics & numerical data, Housing
- Abstract
Mothers, caregivers, and healthcare providers in 163 countries have used paper and electronic home-based records (HBRs) to facilitate primary care visit. These standardized records have the potential to empower women, improve the quality of care for mothers and children and reduce health inequities. This review examines experiences of women, caregivers and providers with home-based records for maternal and child health and seeks to explore the feasibility, acceptability, affordability and equity of these interventions. We systematically searched MEDLINE, MEDLINE In-Process, MEDLINE Ahead of Print, Embase, CINAHL, ERIC, and PsycINFO for articles that were published between January 1992 and December 2017. We used the CASP checklist to assess study quality, a framework analysis to support synthesis, and GRADE-CERQual to assess the confidence in the key findings. Of 7,904 citations, 19 studies met our inclusion criteria. In these studies, mothers, caregivers and children shared HBR experiences in relation to maternal and child health which facilitated the monitoring of immunisations and child growth and development. Participants' reports of HBRs acting as a point of commonality between patient and provider offer an explanation for their perceptions of improved communication and patient-centered care, and enhanced engagement and empowerment during pregnancy and childcare. Healthcare providers and nurses reported that the home-based record increased their feeling of connection with their patients. Although there were concerns around electronic records and confidentiality, there were no specific concerns reported for paper records. Mothers and other caregivers see home based records as having a pivotal role in facilitating primary care visits and enhancing healthcare for their families. The records' potential could be limited by users concerns over confidentiality of electronic home-based records, or shortcomings in their design. Health systems should seize the opportunity HBRs provide in empowering women, especially in the contexts of lower literacy levels and weak health care delivery systems., Competing Interests: The authors have declared that no competing interests exist.
- Published
- 2018
- Full Text
- View/download PDF
36. Genotypic variability for carbon isotope discrimination in the mutant and improved lines of barley.
- Author
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Cağirgan MI, Ozbaş MO, Heng LK, and Afza R
- Subjects
- Genetic Techniques, Genotype, Hordeum growth & development, Mutation, Turkey, Carbon Isotopes analysis, Genetic Variation, Hordeum genetics
- Abstract
Drought tolerance is an important breeding objective in dry and semi-dry conditions. Carbon isotope discrimination (Delta) is a tool that may be used to improve water-use efficiency (WUE) as an indirect selection criterion. The study investigated the variability for Delta in improved F7 lines and their parents (three cultivars and two mutant lines), which were sampled randomly from an F6 nursery performing well under semi-dry conditions. In total, 40 entries were grown in sand culture, arranged in three-replicated randomized complete block designs in two sets of experiments in Antalya, Turkey. There were statistically significant differences (p<0.01) among genotypes in both sets of experiments for Delta, and Delta values range from 20.14 to 21.86. Low coefficient of variation (C.V.) values, i.e. 2 and 1.65 %, for both data sets revealed efficient control of experimental error for Delta and indicated little effect of environment. Consequently, broad-sense heritability estimates for Delta were 0.63 and 0.74. As Delta showed a considerably high heritability and consistency over the two sets of experiments and low C.V. values, it was concluded that this trait could be used in breeding programmes aimed at developing drought tolerance lines. The early heading mutant, M-K-88, and the cultivar selected from land race, Tokak 157-37, showed lowest Delta values, indicating that they had the best water-use efficiency. Low Delta values of these two genotypes were inheritable.
- Published
- 2005
- Full Text
- View/download PDF
37. Physical and chemical mutagenesis.
- Author
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Kodym A and Afza R
- Subjects
- Hordeum drug effects, Hordeum radiation effects, Mutagenesis drug effects, Mutagenesis radiation effects, Plants drug effects, Plants radiation effects, Seeds drug effects, Seeds radiation effects, Selection, Genetic, Ethyl Methanesulfonate pharmacology, Hordeum genetics, Mutagenesis genetics, Mutagens pharmacology, Plants genetics
- Abstract
Important methods to artificially induce mutations are the use of chemical and physical agents. Most chemical mutagens are alkylating agents and azides. Physical mutagens include electromagnetic radiation, such as gamma rays, X rays, and UV light, and particle radiation, such as fast and thermal neutrons, beta and alpha particles. Mutagenic treatment of seeds is the most convenient and, therefore, the standard method in seed propagated crops. Seeds can be treated in large quantities and are easily handled, stored, and shipped. It is fairly easy to repeat the conditions of mutagenic treatment, pre- and post-treatment, and hence, to obtain reproducible results within practical limits. Besides seed treatment, whole plants, cuttings, tubers, pollen, bulbs, corms, or in vitro plants or tissues can be treated. This chapter is restricted to the commonly applied techniques of mutation induction in seeds by ethyl methanesulfonate (EMS) treatment and by gamma and fast neutron irradiation.
- Published
- 2003
- Full Text
- View/download PDF
38. Oligonucleotide and amplification fingerprinting of wild species and cultivars of banana (Musa spp.).
- Author
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Kaemmer D, Afza R, Weising K, Kahl G, and Novak FJ
- Subjects
- Base Sequence, DNA, Single-Stranded, Fruit genetics, Genotype, Molecular Sequence Data, Oligonucleotides, Species Specificity, DNA Fingerprinting methods, Fruit classification, Polymerase Chain Reaction methods
- Abstract
DNA oligonucleotide and amplification fingerprinting have been successfully used to detect genetic polymorphisms in 15 representative species and cultivars of the genus Musa, comprising AA, AAA, AAAA, AAB, ABB, and BB genotypes. In-gel-hybridization of Hinf I-digested genomic banana DNA to the 32P-labeled synthetic oligonucleotides (GATA)4, (GTG)5, and (CA)8 revealed considerable polymorphisms between Musa species and cultivars. The fingerprint patterns proved to be somatically stable and did not show differences between individual plants of 'Grand Nain' (AAA genotype). Dendrograms based on oligonucleotide fingerprint band sharing data proved to be consistent with most of the known features of the history of banana and plantain cultivation and evolution, respectively. DNA samples from the same banana species and cultivars were also amplified by PCR using single or pairwise combinations of short oligonucleotide primers. Amplification products were separated on agarose or polyacrylamide gels and visualized by ethidium bromide or silver staining, respectively. Polymorphic patterns were obtained with some but not all primers. By using the CCCTCTGCGG primer in simplex and/or duplex PCR, the induced mutant 'GN60A' was clearly recognized from its original variety 'Grand Nain'. Both fingerprint techniques allowed the detection of bands characteristic for the A and B genome. This DNA fingerprinting technology has potential application in several areas of Musa improvement.
- Published
- 1992
- Full Text
- View/download PDF
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