Tropical Plant Research

Tropical Plant Research

An International Journal by Society for Tropical Plant Research

E-ISSN: 2349-1183 P-ISSN: 2349-9265
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2016, VOLUME 3 ISSUE 2Pages: 320-324

Identification of heterotic crosses for sesame breeding using diallel matting design

Swapan K. Tripathy*, D.R. Mishra, S. Panda, N. Senapati, Pramod K. Nayak, G. B. Dash, Sasmita Dash, Kartik C. Pradhan, A.P. Dash, D. Mishra, S. K. Mohanty, P. M. Mohapatra and D. Lenka
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Abstract:
Heterosis over better parent (Hb) was estimated in a set of diallel crosses comprising 12 diverse sesame varieties, for fourteen morpho-economic traits viz. days to initial flowering, days to cessation of flowering, duration of flowering, days to maturity, height to first capsule, plant height, number of primary branches/plant, number of capsules/plant, capsule length, capsule breadth, number of seeds/capsule, 500-seed weight, oil content and seed yield/plant. Sixty out of 66 hybrids revealed significant positive heterosis for seed yield. T13 x E8 was considered as the best heterotic cross combination which had yield advantage of 93% over the best high yielding parent CST 785. Besides, Pratap x RT 103 exhibiting second highest Hb value for number of capsules/plant, resulted significantly higher seed yield with second highest positive heterosis. Similarly, CST 785 x E8 with first highest and second highest significant positive Hb value for capsule number and number of primary branches, had also shown to be equivalent to third highest position in terms of significant heterobeltiosis for seed yield/plant. Pratap x T13 and Pratap x Madhabi harbour per se oil content more than 58% which resulted maximum heterobeltiosis for the trait among the crosses.
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