Evaluation of heat tolerance genotypes based on quantitative and physiological parameters in breed wheat (triticum aestivium L.)

Publication Date : 01/04/2019

DOI : 10.22623/IJAPSA.2019.5005.VLALB

Author(s) :

Shahidullah Sapi , Shahidullah Sapi.

Volume/Issue :
Volume 5
Issue 3
(04 - 2019)

Abstract :

The present investigation consisting of 108 diverse genotypes of bread wheat were evaluated to identify suitable and high yielding genotypes under heat stress condition. The experiment was conducted during Rabi 2014-15 and Rabi 2015-16 in RBD having three replications under heat stress condition. The data were recorded on 16 quantitative and physiological characters to figure out lenient genotypes under heat stress condition. The analysis of variance showed highly significant differences among 108 genotypes for all the sixteen quantitative and physiological characters under study, this indicated the existence of sufficient variation in the present gene pool. Per se performance for seed yield depicted that genotypes SHIATS BW-1695(8.55 g) was found to be significantly higher in total set of genotypes, followed by SHIATS BW- 1702 (8.37 g) while SHIATS- BW 1629(8.18) was found to be the most consistent genotype for seed yield coupled with early maturity suited for late sown condition of Allahabad agro-climatic region. Test weight showed significant difference among the wheat genotypes and genotypes SHIATS BW-1606(48.25) was numerically found to have higher test weight, followed by K-8962 and SHIATS- BW-1629 (41.23) respectively. Whereas the genotype k-8962 recorded higher grain filling period (48.67 days), followed by Halna (43.333) and SHIATS BW-1702(40.00) respectively, but Halna (39.80), followed by SHIATS BW-1629 (39.53) and SHIATS BW-1695 (36.15) wheat genotype were found to be significantly higher for membrane stability. However wheat genotypes SHIATS BW- 1702 (6.43), followed by SHIATS BW-1695 (5.67) and SHIATS BW-1629 (5.27) were depicted to have higher canopy temperature depression. Key words: wheat, heat stress, genotype, quantitative, tolerance

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