Genetic effects and correlation studies in Upland Cotton (Gossypium hirsutum L.)
Abstract
Study of correlation of the yield contributing characters paves way in any selection programme targeted towards yield improvement. Twelve G hirsutum F4 populations were raised at the farm of Cotton Research Station,Veppanthattai during 2018-19 under winter rainfed conditions. Single plant selection was performed for quantitative characters viz., number of monopodial branches per plant, number of sympodial branches per plant, plant height, number of bolls per plant and seed cotton yield. Among the crosses, three crosses viz., F484 x Surabhi, C-10-3 x COD - 5-1-2 and F489 x KC3 in which jassid resistance was predominant and number of plants selected were higher for studying the inter-relationship. Number of bolls per plant, number of monopodial branches, and number of sympodial branches had direct effect on seed cotton yield in all the crosses (Table 3)). Out of three crosses, in two crosses (F484 x Surabhi and F489 x KC3) plant height had direct effect on seed cotton yield. Targeted selection for above characters would be useful in breeding programme under rainfed conditions.
