International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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Original Research Articles                      Volume : 7, Issue:7, July, 2018

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : /
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2018.7(7): 3817-3825

Estimation of Heat Stress Tolerance for Yield and its Contributing Attributes in Bread Wheat
Pawan Kumar1*, Hoshiyar Singh1, Jhabar Singhand R.N. Choudhary3
1Division of Plant Breeding and Genetics
2Division of Agriculture Statistics
3G&PB Commissionerate College of Education, Jaipur, Rajasthan, India
Rajasthan Agricultural Research Institute, Durgapura, Jaipur-302018, India
*Corresponding author

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.

Keywords: Wheat, Heat susceptibility index, Thermal stress tolerant

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How to cite this article:

Pawan Kumar, Hoshiyar Singh, Jhabar Singh and Choudhary, R.N. 2018. Estimation of Heat Stress Tolerance for Yield and its Contributing Attributes in Bread Wheat.Int.J.Curr.Microbiol.App.Sci. 7(7): 3817-3825. doi:
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