Performance of wheat (Triticum aestivum) genotypes as influenced by low moisture and temperature regimes under mid-hill conditions of Jammu and Kashmir*
2011
SINGH, ANJANI KUMAR | SINGH, S.B. | KOHLI, ANSHUMAN | SINGH, A.P.
The performance of seven improved wheat cultivars were examined on field trials under cool climatic conditions of mid hills (950 m above mean sea level) under water deficit stress and stress-free condition during 2007_08 and 2008_ 09. Results revealed that genotype which exhibited highest yield potential under non-stress condition has failed to produce the same level of yield under stress situation and vice-versa. Biomass production showed equivalent estimates of heritability (0.83, 0.94) and genetic gain per cycle of selection (0.03, 0.26) between treatments. In this investigation less variability between PCV and GCV of biomass under stress environment coupled with high heritability, genetic advance and genetic gain from selection suggested the influence of additive gene effect on the expression of these characters under stress environment. The possible control of non-additive gene effect was observed for plant height and grain yield in non-stress environment and seed weight in stress condition. This indicated thatindirect selection through characters would be moreeffective when exploited under favourable environment while constituted significant relation with desired characters. Therefore, three genotypes viz VL 900, HS 295 and VL 738 should be preferred for cultivation as they performed well both in stress and non-stress conditions under mid hills.
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