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An experiment to study the additive, dominance and epistasis components of genetic variation was conducted during kharif 2007-08 at Botany Farm, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola. Two genotypes with extreme phenotypic selections viz., AKH-84635 (L1) and AKH-023B (L2) were used as female parents (testers) and were crossed to each of ten genotypes viz., AKH-081, AKH-053B, AKH-9312, AKH-976, AKH-9913, BBP-9, AKH-1174 , LRK-516, 8660B, AKH-8828 used as male lines and obtained 20 F1's. Observations were recorded on days to 50 % flowering, plant height (cm), chlorophyll content (mg g-1), number of bolls plant1, seed cotton yield plant-1, lint yield plant-1 (g), ginning out turn (%), 2.5% span length (mm), Micronaire value (mg inch-1), Fibre strength (g tex-1), uniformity ratio (%), maturity co-efficient and oil content (%). The test of epistasis indicated its presence for all characters. The maximum epistatic variation was contributed by the parents viz., AKH-053B, AKH-1174, 8660B, AKH9913, AKH-976 and LRK-516. The mean squares due to sums and differences were significant for all the characters studied. Both additive and dominance component were observed for all the characters, any how the additive component were predominant for all the characters under study. The parents BBP-9, AKH-9312, LRK-516, AKH-1174, 8660B, AKH-9913 were identified for exploitation of additive genetic component and the parents AKH-081 and AKH-8828 for dominance genetic components.

SIMPLIFIED TRIPLE TEST CROSS ANALYSIS FOR YIELD, YIELD CONTRIBUTING AND FIBRE TRAITS IN COTTON (Gossypium hirsutum L.)