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    Abstract
2012 (Vol. 4, Issue: 4)
Article Information:

Heterosis in Sesamum indicum L.

M. Padma Sundari and T. Kamala
Corresponding Author:  Padma M. 

Key words:  Genetic gain , heterosis, Sesamum indicum L., yield and yield components, , ,
Vol. 4 , (4): 287-290
Submitted Accepted Published
May 08, 2012 June 08, 2012 July 15, 2012
Abstract:

The aim of the present study was to develop superior hybrids for yield and its yield components in Sesamum incicum L. A field experiment was undertaken to study heterosis in sesame (Sesamum indicum L.) with objective of identifying superior hybrids for yield and yield components. The experiment was layed with five parents and F1, F2, F3 in randomized block design with three replicates at Andhra university agriculture farm, Visakhapatnam. All the ten crosses realised positive, highly significant and relatively high standard heterosis compared to MP and BP heterosis in seed yield and yield components with desirable earliness in maturity. The cross X-79-1 X EC 351887 appeared best with highest heterosis for seed yield, branches, 1000 seed weight over standard parent TC-25. Genetic gain was negative in F2 for branches, pods/plant, 1000 seed weight and seed yield was positive and highly significant in F3 for these characters. Vm X X-79-1 is next best and gained desirable earliness and highly significant positive, high heterosis only for seed yield, short stature, pods/plant and primary branches. Heterobeltiosis was highly significant for these characters. Genetic gain was highest and highly significant in F3 but was negative in F2 for almost all the characters excepting seeds/pod. Crosses Vm X EC351887, Vm X EZ351881 and Vm X EC359007 also gained highly significant and very high desirable heterosis in seed yields. The realised heterosis and heterobeltiosis for other eight characters was also highly significant and was either moderate or low. Despite high heterosis, genetic gain in seed yields was marginal in F2 and highly significant in F3 in Vm X EC359007 cross. The cross X-79-1 X EC 351887 showed promising performance with heterosis and highly significant genetic gain in F2 and F3 for seed yield and yield components and thus has high potential to utilize in selection programme.
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  Cite this Reference:
M. Padma Sundari and T. Kamala, 2012. Heterosis in Sesamum indicum L..  Asian Journal of Agricultural Sciences, 4(4): 287-290.
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ISSN (Online):  2041-3890
ISSN (Print):   2041-3882
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