PJB-2017-811
Direct and Indirect Selection Indices for Genetic Improvement in Chickpea
MUHAMMAD TARIQ MAHMOOD
Abstract
This study was conducted to investigate direct and indirect effects and selection indices in fifteen genotypes of chickpea (CicerarietinumL.) The experiment was carried out at Gram Breeding Research Station, Kallurkot, Pakistan, during Rabi season of 2016-17. Basic analysis of variance revealed significant (p≥0.01) differences among genotypes for all the traits. The path coefficient analysis revealed that harvest index had the greatest direct effect on grain yield (0.527) followed by number of pods plant-1(0.498) and 100 seed weight (0.452). Correlation coefficient studies showed highly significant correlation between harvest index and grain yield (0.941) followed by number of pods plant-1 (0.924) and 100 seed weight (0.502), suggesting that these traits could be exploited for crop improvement. Correlation and path coefficient analysis studies showed that harvest index, number of pods plant-1 and 100 seed weight with positive and significant correlation coupled with high direct positive effect to grain yield. Therefore, this study suggested that chickpea improvement program could be based on these traits as selection criteria for development of high yielding cultivars.
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