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Abstract
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Article Information:
Heterosis in Sesamum indicum L.
M. Padma Sundari and T. Kamala
Corresponding Author: Padma M.
Submitted: May 08, 2012
Accepted: June 08, 2012
Published: July 15, 2012 |
Abstract:
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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.
Key words: Genetic gain , heterosis, Sesamum indicum L., yield and yield components, , ,
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Cite this Reference:
M. Padma Sundari and T. Kamala, . Heterosis in Sesamum indicum L.. Asian Journal of Agricultural Sciences, (4): 287-290.
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ISSN (Online): 2041-3890
ISSN (Print): 2041-3882 |
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