Author(s):

Himalay R Patel, Vipul K Baraiya and Shubham N Upadhyay

Abstract: A study was carried out to estimate the GCA of the parents and SCA of the hybrids. Three lines were crossed with eight testers to obtain 24 hybrids in line x tester design. The magnitude of GCA variances were higher for days to 50 per cent flowering, sympodia per plant, boll weight and ginning outturn while SCA variances were higher for plant height, bolls per plant, seed cotton yield per plant, seed index, 2.5 per cent span length, fibre fineness and fibre strength. Among the parents: G(T)-84, TCH 1716, CCH 15-1 and TCH 321 were found to be best general combiners for seed cotton yield/plant. Parent TCB 37 and GSB 21 are good combiners for fibre quality traits. Crosses S-D-2 x CCH 15-1, GMS Gregg x CPD 1501 and G(T)-84 x TCH 1824 recorded higher and significant SCA effects as well as high per se performance for seed cotton yield.

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