Gene Action of Seed Yield and Its Contributing Attributes in Indian Mustard [Brassica juncea (L) Czern & Coss]
Swarnlata Kumawat *
Department of Genetics and Plant Breeding, College of Agriculture, SKRAU, Bikaner, India.
Anil Kumar Sharma
Department of Genetics and Plant Breeding, College of Agriculture, SKRAU, Bikaner, India.
Komal Shekhawat
Department of Genetics and Plant Breeding, College of Agriculture, SKRAU, Bikaner, India.
Anil Kumar
Department of Genetics and Plant Breeding, College of Agriculture, SKRAU, Bikaner, India.
*Author to whom correspondence should be addressed.
Abstract
Ten genetically diverse parents along with 45 F1’s were evaluated in randomized block design with three replications under three different environments. Data were recorded for seed yield and important yield attributes. The parents, RH-406, RGN-303, RGN-229, RGN-298 and PBR-378 were found to be good general combiners for seed yield and other yield contributing traits in which the parent, PBR-378 performed well in all the environment while, RGN-298 in E1, E3 and pooled environments and RGN-229 in E1, E2 and pooled environment were found as good combiners for seed yield and other yield contributing traits. Crosses, RH-30 x RB-50, RGN-303 x RGN-229, RGN-13 x RH-406, RGN-298 x PBR-378 and RGN-236 x RB-50 emerged as good specific combiner for seed yield and one or more related traits. On the basis of specific combing ability effects and per se performance an overall appraisal revealed that the cross combination RGN-303 x RGN-229 in E1, E2 and pooled environment, RGN-13 x RH-406 in E1 and E2, RH-30 x RB-50 in E1 and combined environment while, RGN-298 x PBR-378 in E2 and E3 were found most desirable for seed yield and its contributing characters. These best crosses were the results of good x good, poor x poor and good x poor general combiners.
Keywords: Diallel, environment, genotype, gene action, general combing ability, specific combing ability, traits