THE HERITABILITY OF YIELD, YIELD COMPONENTS AND FIBRE TECHNOLOGICAL PROPERTIES IN PARTIAL DIALLEL HYBRIDS OF UPLAND COTTON (GOSSYPIUM HIRSUTUM L.) VARIETIES IN SOUTHEASTERN ANATOLIA REGION OF TURKEY
Mar 10, 2017

Breeding & Genetic improvement WCRC Breeding-MedMiddleEast WCRC1
Abstract                                                                         Back to Table of contents

This study was conducted on the Fl and the parental genotypes obtained from the partial diallel cross of 12 promising varieties (Gossypium hirsutum L.) with the objectives of creating genetic resources and detecting early varieties with higher yields and more desirable fibre qualities in Southeastern Anatolia region of Turkey.

It was found that variances among the varieties and lines were significant for all the traits investigated, with the exception of fibre maturity. However specific combining ability effects were significant in relation to number of bolls, seed cotton yield, earliness, number of carpels, 100 seed weight and fibre strength. General combining ability effects were highly significant for all the investigated traits. The additive genetic variances were more pronounced than the dominance genetic variances with respect to all the traits studied with the exception of the number of sympodial branches and fibre fineness.  While the number of sympodia, monopodia, plant height, number of bolls, boll weight, number of carpels, seed-cotton weight, ginning percentage, fibre fineness, maturity and uniformity ratios demonstrated positive heterosis values, other traits studied showed negative values. With respect to heterobeltiosis the number of sympodia, plant height, boll weight, 100 seed weight, fibre fineness and fibre uniformity ratio showed positive values and the others negative.

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