Studies on Yield Attributes in Relation to Genetic Parameters in Sesame (Sesamum indicum L.) Genotypes

Author: Preeti Kumari, Pankaj Shah and H.P. Chaturvedi

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Abstract

A field investigation was carried out to study the genetic variations of seventeen yield and yield contributing traits in 36 genotypes of sesame. The analysis of variance revealed significant differences among the genotypes for all the studied characters. Phenotypic variances were found higher than the corresponding genotypic variances for all the characters. Among all the quantitative traits, five traits manifested higher genotypic as well as phenotypic variances and present the purview of genetic improvement through direct selection. The estimation of PCV along with GCV was high for seven traits while, it was moderate for other five traits. The characters viz. plant height, stem height from base to first branch, number of capsules per plant, 1000 seed weight, stover yield per plant, biological yield per plant and protein content showed high estimates of heritability combined with high genetic advance indicating, least environmental ascendancy and preponderance of additive gene effects. Although, productivity is low in sesame but searching the traits of importance and incorporating them for the genetic enhancement in sesame can be considered as a criterion for improving seed yield in breeding programs of sesame. So, these characters can be considered as a benchmark in breeding programmes for refined improvement in seed yield of sesame.

Keywords

Sesame, Genetic variability, GCV; PCV and Seed yield

Conclusion

The traits with high heritability and high genetic advance as percent of mean are governed by the additive gene action where simple selection is effective for breeding programmes. Considering the above result the quantitative trait number of capsules per plant and 1000 seed weight had direct effect on seed yield per plant. Thus, on the basis of the forgoing discussions the traits viz., plant height, stem height from base to first branch, number of capsules per plant, 1000 seed weight, stover yield per plant, biological yield per plant and protein content to be given more importance during selection programme for improving seed yield in breeding programs of sesame. There is a big challenge of capsules shattering problems at the ripening stage of capsules in sesame especially if there is high temperature and high humidity at that time. So this could be included in the future study of sesame.

References

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How to cite this article

Preeti Kumari, Pankaj Shah and H.P. Chaturvedi (2023). Studies on Yield Attributes in Relation to Genetic Parameters in Sesame (Sesamum indicum L.) Genotypes. Biological Forum – An International Journal, 15(4): 166-172.