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SELECTION CRITERIA IN F₃ AND F₄ POPULATION OF MUNGBEAN (VIGNA RADIATA (L.)WILCZEK)

G. SARWAR, M. SIDDIQUE SADIQ, M. SALEEM AND G. ABBAS

Abstract: Five cross combinations of mungbean viz., NM 92 x NM 51,NM 92 x Pusa Baisakhi, NM 92 x NM 93, NM 92 x CV. 6601 and CV. 6601 x NM 92 in F₃ and F₄ generations were studied for genetic parameters and direct and indirect effects of different morphological traits on yield. Based on results of genetic parameters, populations of CV. 6601 x NM 92 and NM 92 x Pusa Baisakhi for pods per plant and NM 92 x CV. 6601 for 100 seed weight in F₃and NM 92 x CV. 6601, NM 92 x NM 93, and CV. 6601 x NM 92 in F₄ showed additive type of genes as the said traits in these particular cross combinations contain high heritability values combined with high genetic advance. Population of NM 92 x Pusa Baisakhi, NM 92 x NM 51, NM 92 x NM 93 and NM 92 x CV. 6601 in F₃ and NM 92 x CV. 6601, NM 92 x Pusa Baisakhi, CV. 6601 x NM 92 and NM 92 x NM 51 in F₄ showed positive direct effects for branches per plant, pods per plant, 100 seed weight and seeds per pod.
Present studies revealed that during selection, pods per plant may be used as selection criteria followed by 100 seed weight, seeds per pod and branches per plant, whereas selection of single stem plants should be discouraged and preference must be given to medium tall plants having profused branching habit alongwith more number of pods, seeds per pod and bold seed size.
 

Nuclear Institute for Agriculture and Biology, Faisalabad, Pakistan.