Vol. 11, Issue 5 (2022)

Author(s):
A Muthuswamy, M Pandiarajan and Surendhar A

Abstract:
Ten lines were crossed with four testers in Line × Tester fashion to estimate the combining ability for yield attributing traits in greengram. Preponderance of non-additive gene action was realized from higher values of specific combining ability compared to general combining ability and ratio of variances of GCA to SCA. Parents Pusa 0672, IPM 02-17, ML 1451and CO 7 were considered as superior parents as they recorded high per se performance with positive significant effects for seed yield and other yield contributing traits. On the basis of significant gca effects of parents and non-significant sca effects of hybrids, eight cross combinations viz., Pusa 0672 x CO 7, Pusa 0871 x CO 7, Pusa 0871 x CO 6, MH 565 x CO 7, MH 521 x CO 7, IPM 02-17 x Local TNY, IPM 02-19 x CO 7 and MH 318 x CO7 were found to be suitable for improving various traits through recombination breeding. The best specific combiners based on per se performance and sca effects were Pusa 0672 x CO 6, IPM 02-3 x VBN 2, IPM 02-19 x CO 6, IPM 02-17 x CO 7, MH 565 x CO 7, MH 521 x Local TNY, ML 1451 x CO 6, and ML 1451 x CO 7 and could be utilized for further improvement of yield in greengram.