Genetic analysis of agronomic traits in Gobhi Sarson (Brassica napus L) breeding lines
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Authors
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Ravindra Kumar
Mata Gujri College (Punjabi University, Patiala), Fatehgarh Sahib 140406, Punjab, India
Author
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Meenakshi Sharma
Mata Gujri College (Punjabi University, Patiala), Fatehgarh Sahib 140406, Punjab, India
Author
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Vijay Singh
Mata Gujri College (Punjabi University, Patiala), Fatehgarh Sahib 140406, Punjab, India
Author
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Saurabh Gupta
Mata Gujri College (Punjabi University, Patiala), Fatehgarh Sahib 140406, Punjab, India
Author
Keywords:
Additive, dominance, gene action, genotypes, Gobhi Sarson, SCAAbstract
Understanding the knowledge of gene action and the nature of genes/ traits is important for an effective breeding
program. The objective of this study was to determine the general combining ability (GCA) and specific combining
ability (SCA), variances and their effects on seed yield and components of Gobhi Sarson (Brassica napus L.) breeding
materials. Five diverse B. napus genotypes selected for their seed yield were crossed using a half-dialle mating design.
The analysis of the variance of parents and their cross effects was significant for all parameters measured. Among five
parents, two parents namely EC-338978 and RBS bold showed positive GCA effect may be considered as good general
combiners for seed yield and components. The best four selected crosses with significant SCA effects for seed yield were
EC 338978 × RBS Bold, EC 338978 × HMS4, EC 338978 × BMS4 and RBS Bold × BMS4, respectively. The selected
crosses are valuable genetic resources for B. napus breeding for seed yield and yield components in the Punjab region or
similar environments.
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