Performance, Interrelationship and Path Analysis of Some Yield Component in Sesame

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Hamid, K.A. A.
Ibrahim, A. E.H.S.
Taha, M.B.
Ahmed, M.E.
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Faculty of Agriculture, University of Khartoum, Shambat, Sudan
Twenty genotypes of sesame were evaluated at the Gezira University Farm, Wad Medani, Sudan, for two consecutive rainy seasons (1999 and 2000) in a randomized complete block design with four replicates. The objectives were to estimate the genotypic and phenotypic variability, heritability in broad sense, genotypic and phenotypic correlation coefficients and path coefficient analysis for 12 characters the highest genotypic of variation and genetic advance were recorded for height to first branch and height to first capsule in both seasons, and the lowest for number of capsules/ plant in the second season. High heritability estimates (>80%) in both seasons were recorded for days to 50% flowering, days to maturity and 100-seed weight. High heritability estimate, combined with high genetic advance, was given by height to first capsule in the first season. The highest yielding genotypes were Pach, Um Shagara, Promo, Khidir and Karam. Their seed yield varied from 1511 to 1678 kh/ha, Seed yield/ha showed significant positive genotypic correlation coefficients with seed yield/ plant and 1000- seed weight. The multiple coefficient of determination and path coefficient analysis indicated that the seed yield/ plant, 1000-seed weight and number of capsules/ plant were the most important characteristics related to seed yield/ ha. The greatest direct effect on seed yield/ ha was exerted by seed yield/ plant.
Page(s): 11 (3), 305-321, 18 Ref.