Abstract
Four CMS lines and four restorers were crossed in a line x tester fashion to elucidate the information on the combining ability of seed yield, yield components and also to know the nature of gene action involved in inheritance of important quantitative traits. A total of 16 crosses were evaluated for eight different quantitative traits. Line CMS-HA-03 and CMS-HA-54 exhibited maximum GCA effects for most of the characters studied and were found to be the good general combiners. Likewise, tester RHP-73 was the good general combiners for most of the traits under study. Similarly cross combinations viz., CMS-HA-111 × RHP-71 and CMS-HA-03 × RHP- 76 were observed as potential cross having desirable SCA values.The estimates of variance components revealed predominance of non-additive gene action for all characters studied except days tomaturity.
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