Correlation and Genetic Divergence Studies of Cauliflower (Brassica oleracea var. botrytis) under Lower Hilly Region of Himachal Pradesh

Author: Dharminder Kumar, Deepali Chaudhary, Ramesh Bhardwaj, Rajesh Dogra, Aanchal Chauhan, Sandeep Kumar, Kumari Shiwani and V.G.S. Chandel

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Abstract

Availability of diverse parental lines is of paramount importance for crop improvement, thus an attempt was made to estimate the association of characters and genetic divergence between twenty five cauliflower genotypes. Significant variations were observed for almost all the traits. Net curd weight had the highest positive significant correlation with the curd yield indicating that the net curd weight is the optimum parameter for selection of high yielding genotypes. However, days to marketable maturity imposed negative non significant correlation on curd yield. Among the twenty five genotypes curd yield (kg/plot and q/ha) was greater in local genotypes namely Jachh CF-2, Jachh CF-7 and Jachh CF-17, hence these local varieties can be utilized in further breeding programmes. It was found that cluster I and cluster V were most divergent due to presence of maximum inter cluster distance between them. Therefore, they can be used for further breeding programmes such as hybridization.

Keywords

Cauliflower, Correlation, Genetic divergence, Path analysis, Yield

Conclusion

Net curd weight had the highest positive significant correlation with the curd yield indicating that the net curd weight is the optimum parameter for selection of high yielding genotypes. This study revealed highest positive direct effect of harvest index on curd yield. Twenty five genotypes were classified into five clusters on the basis of D2 analysis. It was found that cluster I and cluster V were most divergent due to presence of maximum inter cluster distance between them. Therefore, they can be used for further breeding programmes such as hybridization. The highest intra cluster distance in cluster I depicted presence of high heterogeneity.

References

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How to cite this article

Kumar, D., Chaudhary, D., Bhardwaj, R., Dogra, R., Chauhan, A., Kumar, S., Shiwani, K. and Chandel, V.G.S. (2021). Correlation and Genetic Divergence Studies of Cauliflower (Brassica oleracea var. botrytis) under Lower Hilly Region of Himachal Pradesh. B