HETEROSIS AND COMBINING ABILITY IN SOYBEAN FOR THE TRAITS OF VEGETABLE IMPORTANCE

Abstract

Fifteen cross combinations along with their parents were studied for combining ability heterosis and gene action for 12 traits of vegetable importance in soybean. All the traits were found under the control of additive gene action. From the results it was also concluded that DS 9501(P3), TNAU S 55 (P2) and TNAU S 7 (P1) were found to be good general combiners. On the basis of per se performance, heterosis and specific combining ability of the cross combinations and general combining ability of the parents involved four cross combinations viz., TNAU S 55 / DS 9501 (P2 / P3), TNAU S 55 / TS 82 (P2 / P4), DS 9501 / TS 82 (P3 / P4) and DS 9501 / CO 2 (P3 / P6) were assessed as the best material for further breeding work to obtain superior segregants.