PJB-2017-724
ESTIMATION OF GENETIC PARAMETERS AND INTERRELATIONSHIPS AMONG IMPORTANT TRAITS IN BREAD WHEAT
ANWAR SHAH
Abstract
In the present studies wheat genotypes along with their F3 populations were evaluated to estimate variability, heritability, genetic advance and correlation among yield and yield related traits. The experiment was conducted in the experimental field of Nuclear Institute for Food and Agriculture, Peshawar during 2015-16. Eight F3 populations namely, Barsat × NR 395, Lalma × Barsat, Lalma × NR 397, Marvi × RIL 0815, NRL 0707 × Barsat and NRL 1107 × Lalma along with their parents were evaluated in a randomised complete block design with three replications. Highly significant differences were observed for the target traits indicating the existence of variability and potential for improvement through selection. Greater magnitude of heritability coupled with high genetic advance for most of the traits suggest that improvement of these characters could be faster. Selection on the basis of these traits would be more fruitful as they are least influenced by the environment due to additive gene affects. The most promising cross combinations were Barsat × NR 395, Marvi × NRL 1107, NRL 1107 × Lalma, NR 0707 × Barsat and RIL 0815 × Barsat. These crosses deserve more attention in future wheat improvement programs for development of high yielding wheat cultivars. Fertile tillers plant-1, biological yield plant-1, 100-grain weight and harvest index had significant positive relation with grains yield plant-1 pointing out their utility as direct selection criteria for isolation of superior genotypes from genetically mixed populations.
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