Studies on hybrid vigour and combining ability for seed yield and contributing characters in cowpea (Vigna unguiculata)

oleh: R.Ushakumari, N.Vairam, C.R. Anandakumar and N. Malini

Format: Article
Diterbitkan: Indian Society of Plant Breeders 2010-07-01

Deskripsi

The combining ability aids in better selection of parents besides elucidating the nature and magnitude of gene action. Heterosisand combining ability analysis were carried out in line x tester model using five lines viz., Kanakamany, Subadra, TC 49-1,Lola and Sarika and five testers viz., CO2, CO4, CO6, CO (CP) 7 and VBN 1. The results reveled that TC 49-1, Lola, Sarika,VBN1, CO2 and CO (CP)7 were found to be good general combiners for seed yield. Among the parents, TC 49-1, Lola andVBN1 were found good general combiners for days to 50% flowering, plant height, cluster / plant, pods, / plant, length of podand number of seeds / plant. The crosses Lola x VBN 1, Sarika x VBN 1 and Sarika x CO (CP) 7 were the best specificcombination for grain yield. The two crosses Lola x VBN 1 and Sarika x CO 4 showed significant heterosis over the standardlatest variety CO (CP)7 for seed / pod, cluster / plant, pods / plant and 50% flowering. The crosses TC 49-1 x CO 2 showedhigh heterosis over standard variety for plant height and clusters/plant. Hence, these hybrids can be utilized for commercialcultivation.