Combining ability was studied in a 6x6 diallel set of soybean Glycine max (L.) Merrill. for seed yield and its components. Analysis of variance for treatment showed a wide range of variability: Both general and specific combining ability variances were significant. The higher magnitude of gca variance indicated the importance of additive and additive x addi- tive components of genetic variance in the inheritance of these characters. Monetta" and 'EC 7034 were best general combiners for a majority of traits. Five Fy hybrids) viz Bragg x Wills. "EC 7034' x Hernon-49 'Monetta' x Hernon-49", "EC 7034 x 'Mone- tta and Punjab-1" x 'EC 7034 were identified as promising and their use in hybrid broading programme in soybean would be most advantageous.
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Tamil Nadu Agricultural University
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Tamil Nadu, India.
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