N. HARI SATYANARAYANA*, SUBHRA MUKHERJEE AND K. K. SARKAR
Department of Genetics and Plant Breeding, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia-741 252
(West Bengal), India
Presently : Regional Agricultural Research Station (ANGRAU), Lam, Guntur-522 034 (Andhra Pradesh), India
*(e-mail: haribckv@gmail.com; Mobile: 99030 96482/94405 18085)
(Received: July 10, 2022; Accepted: August 16, 2022)
ABSTRACT
A study was conducted to identify the parents with good general combining ability and specific cross
combinations for seed yield and its nine attributing traits in roselle crop by utilizing 6 x 6 full diallel model at Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, West Bengal. Parents and F1’s were grown in randomized block design with two replications. Analysis of variance for parents showed significant difference for all the characters except base diameter, while for hybrids significant differences for all the traits except plant height. Significant differences for gca and sca were exhibited in the characters plant height, mid diameter, number of pods, number of seeds per pod, test weight and seed yield suggesting presence of maternal effect of parents in their offsprings for these characters. For most of the characters, σ2sca was found to be greater than σ2 gca except for days to 50% flowering which could be suggested that all these characters were predominantly influenced by non-additive gene action. Among the six parents, AS 80-6 and AR-14 were found to be good general combiners for seed yield. The crosses, R-225 x AR-81, R-225 x R-180 and R-225 x AR-14 had recorded high per se performance for seed yield among the studied hybrids.
Key words : Combining ability, seed yield, gene effects, roselle