Heritability Estimate of Yield Related Traits in Mungbean at Two Locations

Abstract

Performance of 17 mungbean genotypes was tested at two diverse environments (Swat and Peshawar) of Khyber Pakhtunkhwa, Pakistan during 2012 to study heritability estimate of yield related triats in mungbean. Data were taken on pods plant^-1, pod length, seeds pod^-1, 100-seed weight, seed yield. Pooled analysis of variance across locations revealed significant differences among the two locations and genotypes for all traits. Genotype × location interaction was also highly significant (P=0.01) for all traits demonstrating differential performance of mungbean genotypes over the two test locations. Means for pods plant^-1, pod length, seeds pod^-1, 100-seed weight, seed yield were 21.7 vs. 39.0, 9.2 vs. 8.5 cm, 11.3 vs. 10.2, 4.2 vs. 5.4 g, 1429 vs. 1828 kg ha^-1 at Peshawar and Swat, respectively. All mungbean genotypes produced more pods plant^-1 and heavier seeds resulting in more seed yield per unit area at Swat than Peshawar .Genotypes AUP1210-9, AUP1210-10 and AUP1410-5 were high yielding at Swat location as well as across the two locations. AUP1210-9 and AUP6310-4 were the high yielding genotypes at Peshawar location. Genetic variances at each location as well as across locations were greater in magnitude than environmental variances for most of the traits. Magnitude of heritability and selection response for most traits varied over two locations. Heritability and selection response across two locations were 0.67 and 4.33 for pods plant^-1, 0.65 and 0.70 cm for pod length, 0.55 and 0.67 for seeds pod^-1, 0.66 and 0.72 g for 100-seed weight, 0.68 and 328.4 kg ha^-1 for seed yield, respectively.

Keywords:Mungbean, genetic association, heritability .