National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Mutation breeding programme(s) aims to enlarge the frequency and spectrum of mutations and to increase the frequency of viable mutations. The cultivar BPT-5204 revealed maximum reduction in germination (69.00%), seedling height reduction (52.54%), plant survival at maturity (62.50%), pollen sterility (32.82%) and spikelet sterility (29.80%) and Adamchini exhibited maximum reduction in germination (62.33%), seedling height reduction (65.71%), plant survival at maturity (50.90%), pollen sterility (50.86%) and spikelet sterility (34.80%) at a combined dose of 30 kR + 0.02 M EMS. The maximum and minimum frequency of mutation per 100 M2 seedlings was recorded for a combined dose of 30 kR + 0.02 M EMS and 10 kR doses of gamma rays in BPT-5204 and Adamchini respectively. The spectrum of chlorophyll mutations consisted of only four mutant types, viz., albina, xantha, viridis and striata. In the present investigation, albina mutant occurred at higher frequencies and Adamchini recorded the highest frequency of chlorophyll mutations indicating varietal responses.
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