ESTIMATION OF GENE ACTIONFOR THE SELECTION OF SUPERIOR PARENTS AND THEIR CROSS COMBINATIONSFOR YIELD AND FIBER ASSOCIATED ATTRIBUTES IN AMERICAN COTTON (GOSSYPIUM HIRSUTUM L.)

Cotton is very important crop regarding the global trade. It grown for its fiber and edible oil in Pakistan. contributes 1.5 percent to GDP 69 foreign exchange. There need enhance yield per unit area of cotton by developing high yielding stress tolerant varieties. In breeding program parents their crosses are selected on basis combining ability. Combining ability analysis performed identify general specific combiner attributed traits. This research was evaluation four lines as female (C-1, CIM-616, TIPO-1 CYTO-608) three testers male (NIAB-1048, CYTO-124 CIM-600) (Gossypium hirsutum L.). The traits such plant height, first fruiting node, seed yield, monopodial branches, sympodial ginning out turn percentage, number bolls plant, height node ratio tested. parental F1 cross will be determined related genotypes with good further exploited hybrid/variety development programs. For most like monopods boll weight nodes 1st intermodal distance, index, strength, length, uniformity fineness value had more dominance variance. higher effects GCA SCA indicated that there role additive non-additive gene action inheritance