CHARACTERIZATION AND EVALUATION OF SESAME GERMPLASM (Sesamum indicum L.)
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Date
2009-07
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JAU,JUNAGADH
Abstract
Sesame is an important edible oil seed crop, extensively grown
in India. The present investigation was undertaken to characterize
sesame germplasm and to know the extent of genetic variability,
nature and magnitude of associations and direct and indirect effects
of component characters. Ninety germplasm lines were grown in
randomized block design with three replications at the Agricultural
Research Station, J.A.U., Amreli during Kharif200S.
The observations were recorded for five qualitative characters
and fourteen quantitative traits. Qualitative traits were branching
pattern, capsule arrangement, locules per capsule, seed colour and
hair on capsule. Quantitative traits recorded on five randomly selected
plants in each plot were days to initiation of flowering, days to 50 %
flowering, reproductive period, days to maturity, plant height, number
of primary branches per plant, number of capsules per plant, length
of capsule, number of seeds per capsule, 1000 seed weight, oil
content, biological yield per plant, harvest index and seed yield per
plant.
Analysis of variance revealed significant differences among the
genotypes for all the characters. The value of GCV was higher for
biological yield per plant followed by seed yield per plant, harvest
index and number of capsules per plant. Whereas, PCV value was
higher for biological yield per plant followed by seed yield per plant,
harvest index, number of primary branches per plant and number of
capsules per plant.
High heritability was associated with high genetic advance for
seed yield per plant, number of seeds per capsule, harvest index,
biological yield per plant and number of capsules per plant. In most of
the cases, high genetic advance was accompanied with high
heritability.
Number of capsules per plant, oil content, biological yield per
plant and harvest index but not days to maturity was associated
significantly and negatively with seed yield per plant. Reproductive
period, plant height, length of capsule, biological yield per plant and
harvest index were the characters, which had a major share toward
seed yield directly. Indirect contribution by number of primary
branches per plant, plant height, number of capsules per plant,
reproductive period, harvest index and biological yield was seen and
strong positive association between number of capsules per plant, oil
content, harvest index and seed yield per plant as well as biological
yield per plant indicated that emphasis should also be given to the
number of capsules per plant and biological yield per plant in
selection programme for improvement of seed yield in sesame
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Botany