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 |
In bread wheat (Triticum aestivum L. em. Thell.), development of thermal stress tolerant cultivars and realization of potential at yield in hot climate is enshrined goal of our breeding program. By keeping the above fact in view, the present study was conducted in two environments i.e. normal and late sown condition with 10 diverse genotypes, their 45 F1’s and F2’s to magnify the yield level of wheat in high temperature areas by selecting stress tolerant parents and cross combinations. In the present study, as per the HSI value of parents and crosses genotypes were classified in to four different categories i.e. highly heat tolerant (HSI < 0.50), heat tolerant (HSI: 0.51-0.75), moderately heat tolerant (HSI: 0.76 – 1.00) and heat susceptible (HSI > 1.00). An overall assessment of parents for all the studied characters indicated that parent PBW 343, Raj 4079, Raj 4083 and PBW 590 590 were found to be desirable for most of the characters on the basis of HIS while among the crosses, PBW 343 x Raj 4079, PBW 396 x Raj 4120,PBW 502 x PBW 590, C 306 x DBW 88 and PBW 502 x Raj 4079 displayed maximum tolerance as they attained top three rank for more than two characters.
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