Exploitation of Heterosis for Seed Yield and Quality Traits in Sesame (Sesamum indicum L.)

Author: Sandhya, H.R., Madhusudan, K., Raveendra, H. R. and Sahana S.R.*

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Abstract

An experiment was conducted to know the heterosis for seed yield and quality parameters in sesame. In this study Line × Tester analysis in sesame using twenty lines and two tester was carried out to assess the heterosis and combining ability for various quantitative traits viz., days to 50% flowering, days to maturity, plant height, number of branches per plant, number of capsules per plant, capsule length, 1000 seed weight, oil content and seed yield per plant. The ratio of General combining ability (GCA) to Specific combining ability (SCA) variance showed the preponderance of non-additive gene action in the expression of all the traits which can be improved by heterosis breeding method. The crosses MT-10-8-2, AT-207, RT-362 and JLS-301-24 were recorded the high, significant and positive standard heterosis for seed yield per plant and some of its component traits. Such crosses could be exploited for practical heterosis breeding programme in sesame. The hybrid combination Mangala Loca

Keywords

Sesame, Heterosis, Line × Tester, SCA, GCA.

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