Vol. 12, Issue 6 (2023)

Author(s):
Hemanth S and Laxmi C Patil

Abstract:
Twenty-six advanced breeding lines of sesame were evaluated in a randomized block design with two replications for fifteen traits during summer 2022 at AICRP on Sesame and Niger, MARS, UAS, Dharwad along with four checks viz., DS-5, DSS-9, JTS-8 and TKG-22 to study the genetic parameters and selection index for yield and its component traits in sesame. Among the various quantitative characters studied, number of secondary branches per plant exhibited highest genotypic and phenotypic coefficient of variation. The number of primary branches per plant showed the highest heritability coupled with genetic advance over the mean, indicating additive gene action underlying these traits and useful in selection. Thirty-one selection indices involving five traits i.e., seed yield per plant (A₁), days to maturity (A₂), number of productive capsules per plant (A₃), thousand seed weight (A₄) and oil content (A₅) were constructed using the discriminant function technique. Among thirty-one different selection index, highest expected genetic advance and relative efficiency was observed for the selection index consisting of all the component characters viz., A₁, A₂, A₃, A₄ and A₅.