PJB-2018-530
ESTIMATION OF HETEROTIC POTENTIAL FOR VARIOUS MORPHO-PHYSIOLOGICAL TRAITS IN WHEAT BY USING LAND RACES
shazia parveen
Abstract
Abstract Manipulation of heterotic potential is considered to be a vital approach for enhancing yield potential of wheat to overcome the food security threats. Heterotic potential of ten F1 hybrids was estimated for grain yield and contributing traits in bread wheat. Hybrids were developed by crossing five genetically diverse wheat elite lines/varieties with two local land races following line × tester mating fashion at regional Agricultural Research Institute, Bahawalpur (Pakistan). The resultant hybrid progenies were grown along with parental genotypes during rabi season 2014-15. Highly significant genetic variability was present in the experimental material for the traits under study. Most of the crosses showed significant heterosis over mid, better and standard parent. Maximum significant commercial heterosis was observed in plant height (27.66%), followed by tillers per plant (16.67%), peduncle length (13.59%) and grain yield per plant (10.68%).The highest increase in grain yield per plant over the commercial variety was observed for the cross CB-35 × LR1 which may be considered for selection as hybrid or pure line wheat varieties for increasing grain yield.
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