Combining ability analysis for yield and fibre quality traits in upland cotton (Gossypium hirsutum L.).

摘要

Six lines and nine testers were crossed and 54 hybrids were developed during kharif, 2006 to study seed cotton yield and fibre quality parameters. The parents, hybrids and three checks viz., PHH 316, NHH 44 and Bunny were planted in kharif, 2007 at different locations. Observations recorded on 14 yield and yield contributing characters with an objective to estimate combining ability. The estimates of gca effects revealed that the parents PH 348, PH 1009, PH 1024 and PH 297-7-1 were found best general combiner not only for seed cotton yield/plant but also for other yield contributing characters in desired direction. In respect of specific combining ability the hybrids KH 121 x PH 1024, KH 120 x NH 545, KH 121 x PH 348 and PH 297-7-1 x PH 1024 had shown positive significant sca effects for seed cotton yield and its component traits.