| Titles |
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English :
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Germination Scenario and Growth Analysis for Irradiated Cowpea.
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Arabic :
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سيناريو الإنبات وتحليل النمو للوبيا المشععه
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| Abstract |
Gamma - ray technique, as physical mutagens method, substitute classical breeding methods, for development a new varieties, to face of population explosion threats, and limited of agricultural production elements (water + agricultural area).
Cowpea seeds cv. Kafr El– Shiekh, were exposed by six ?- doses “?d”; 0, 50,100, 150, 250 and 350 Gray (Gy). Pretreated seeds were germinated to predicted lethal dose (LD50) and observed germination scenarios. Thereafter, exposed seeds by 0, 50, 100 and 150Gy., were grown till maturity at open field to evaluate growth characterizes i.e., leaf area index “LAI”, specific leaf weight “SLW”, net assimilation rate “NAR”, and relative growth rate “RGR”. As well as, nodules number per plant “NNP”, nodules dry mass per plant “NDM”, and seed yield “Sy”, using complete randomized block design. Results affirmed that LD50 was ? 200 Gy. Gamma ray has a bio-positive significant effect on germination indices. Where, max. germination percentage “GP” (92%), mean germination time “MGT” (1.87day), highest mean daily germination “MDG” (30.67z% day-1), and germination index “GI” (380) were obtained by exposed seeds with 150Gy. Also, the development of the growth parameters LAI, SLW, NAR, RGR, affected significantly (P ? 0.05) by ?d from plant establishment to maturity. NNP had direct relations with ?d, at different plant age. Then, the increase in “Sy” was more pronounced and significantly affect with pre-sowing seeds irradiation, compared with control..
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| Publication year |
2020
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| Pages |
807- 816.
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| Organization Name |
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| Author(s) from ARC |
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| External authors (outside ARC) |
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| Publication Type |
Journal
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