Combining Ability Studies in Desi Cotton (G. herbaceum L.) in Vertisols of Gujarat
Publication Date : 20/07/2016
The present investigation was carried out to study combing ability of parental lines and hybrids of desi cotton (G. herbaceum L.) in saline Vertisols of Bharuch, Gujarat. Analysis of variance for combining ability revealed that mean squares due to parents and crosses were highly significant for almost all the characters indicating that considerable gca and sca was present for parents and hybrids, respectively. Combining ability analysis revealed importance of both additive and non-additive components in the expression of seed cotton yield and other traits. Three hybrids viz. G. Cot. 23 x GShv 433/08 (24.90), GBhv 287 x GShv 233/09 (22.76) and GBhv 305 x GShv 280/11 (20.73) were best combiners with high sca effect for seed cotton yield per plant. In general, the crosses exhibiting high sca effects for seed cotton yield per plant also had high sca effects for yield contributing characters and physiological parameters. Per se performance of parents and hybrids agreed well with general combining ability effects of parents and heterotic response of hybrids, respectively.
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