Genetic analysis of the hybrids, involving monostem / shy branching genotypes in sesame (Sesamum indicum L.)

  • P. Sumathi and V. Muralidharan
Keywords: Sesame, variability, co-efficient of variation, heritability and genetic advance

Abstract

An experiment was conducted with thirty hybrids produced by line x tester mating design from eleven sesame
genotypes involving five branched and six monostem / shy branching types. Observations were recorded on
days to 50% flowering, days to maturity, plant height, number of branches per plant, number of capsules per
plant, capsule length, capsule breadth, number of seeds per plant, 100 seed weight, seed yield per plant and oil
content. The traits, number of branches per plant, number of capsules per plant and seed yield per plant showed
high PCV and GCV estimates. There is enough scope for selection based on these characters, and the diverse
genotypes can provide materials for a sound breeding programme. High heritability combined with high genetic
advance (as per cent of mean) observed for plant height, number of branches, number of capsules and seed
yield per plant showed that these characters were controlled by additive gene effects and phenotypic selection
for these characters would likely to be effective. The characters, plant height, number of branches per plant,
number of capsules per plant, days to 50% flowering, days to maturity and 100 seed weight showed
significantly positive correlation with seed yield per plant. The trait capsule breadth showed significantly
negative association with seed yield per plant.
Section
Research Note