Evaluation of Genetic Parameters for Yield and Related Traits in new Recombinants interspecific Mungbean × Mashbean Genotypes

Document Type : Original Article

Authors

1 Nuclear Institute for Agriculture and Biology (NIAB), Faisalabad, Pakistan

2 Department of Plant Breeding and Genetics, University of Agriculture, Faisalabad

3 Nuclear Institute of Agriculture (NIA), Tandojam, Pakistan

Abstract

SEVENTY TWO Mungbean × Mashbean recombinant genotypes were evaluated in the field for seed yield and its components traits. Highly significant differences were observed among the genotypes. The magnitudes of genotypic and phenotypic coefficients of variability ranged from 2.73% to 28.97% and 3.46% to 31.95%, respectively. Pods per plant exhibited maximum amount of genetic variability followed by clusters per plant and seed yield per plant. 100-seed weight was observed to be the most heritable trait with greatest magnitude (h2 = 99%). Pods per plant had maximum positive and significant genotypic (rg= 0.90) and phenotypic (rp= 0.86) correlations with clusters per plant. Both traits were identified as the most important characters as they had strong genetic and phenotypic relationships with seed yield. Selection for number of pods per plant among different agronomic traits showed greatest improvement in seed yield that was 54% of the improvement possible through direct selection for seed yield. Likewise, clusters per plant and plant height also showed higher improvement in seed yield through indirect selection which was 29% and 20% of the improvement possible by direct selection for yield. Days to flowering also showed promise for 8% of the improvement in seed yield possible through direct selection for seed yield. Thirty six promising recombinants were selected on the basis of desirability index. On the basis of overall performance seven recombinant genotypes, viz; MMH 1115, MMH 4224, MMH 4255, MMH 7124, MMH 2112, MMH 4295 and MMH 2225 were selected as elite lines.

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