1Department of Genetics and Plant Breeding, Navsari Agricultural University, Navsari-396 450, Gujarat, India
2Department of Genetics and Plant Breeding, Banda University of Agriculture and Technology, Banda-210 001, Uttar Pradesh, India
3Department of Genetics and Plant Breeding, Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu, Jammu-180 009, Jammu and Kashmir, India
*Corresponding Author: Simran Singh, Department of Genetics and Plant Breeding, Navsari Agricultural University, Navsari-396 450, Gujarat, India, Email: itssimran10022000@gmail.com
Green gram [Vigna radiata (L.) Wilczek] is an important edible legume crop cultivated almost all over India and it is the third most important pulse crop after chickpea and pigeon pea. With a view to search for more variability among the parents and their F2 generations for ten morphological traits and MYMV (Mungbean Yellow Mosaic Virus) incidence, the present study was undertaken to elucidate information on variation of different characters contributing towards seed yield of segregating populations of green gram.
The present experiment comprised four diverse parents viz., KM-22-24, GM-6, HUM-27 and GM-8 and their F2 populations of the crosses viz., cross-I (KM-22-24 × GM-6) and cross-II (HUM-27 × GM-8) to elucidate information on variation of different characters contributing towards seed yield of segregating populations of green gram. The disease MYMV incidence (%) was also recorded in parents and F2 generation. The experiment was carried out in summer-2023 (crossing), kharif-2023 (selfing) and summer-2024 (evaluation) at Navsari Agricultural University, Navsari, Gujarat.
The segregating populations manifested increased mean values over the parental means in the cross-I for days to maturity, plant height, branches per plant and pod length while in cross-II for the traits viz., branches per plant and pods per plant. In cross-I, the traits viz., branches per plant, seeds per pod and seed yield per plant showed moderate value of GCV and higher value of PCV while in the cross-II, the traits like branches per plant and seeds per pod showed higher value of GCV and PCV. This higher value indicated the greater scope of improving this character by applying the selection in an appropriate direction. Higher heritability coupled with high genetic advance as per cent mean was observed for days to flowering, days to maturity, plant height and pod length in cross-I. Similarly, in cross-II days to flowering, plant height, branches per plant, seeds per pod and seed yield per plant show the same result. Hence, priority should be given to these traits in formulating selection strategies to obtain desirable genetic gain by selection.
GCV, Genetic advance, Genetic variability, Green gram, Heritability, PCV
