Genetic diversity for curd yield and its attributes in late cauliflower
Genetic diversity in cauliflower
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https://doi.org/10.58993/ijh/2023.80.2.2Keywords:
Brassica oleracea L. var. botrytis , Genetic diversity, PCA, Variability, Transgressive segregants.Issue
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Genetic diversity was studied in 26 genotypes of late group of cauliflower during winter 2018-19 and 2019- 20. Based on mean performance, DPCaCMS-1 produced significantly high marketable curd weight, 27.38% better than the best check. D2 analysis clustered the genotypes in seven clusters, with the maximum in Cluster I. Genotypes from clusters V and VI with higher inter-cluster genetic divergence would be a valuable source of genes for improvement. Cluster IV represented maximum mean values for marketable curd weight. The maximum contribution towards genetic diversity was made by days to curd initiation followed by leaves/plant and curd diameter. Principal component analysis indicated the five most informative principal components with more than one eigen value, accounting for 83.59% of the total variance for all traits. The genotypes, namely, DPCafW3, DPCaf US, DPCaCMS-1, DPCaCMS-2, DPCaf-1, DPCaCMS-3, DPCaf30, DPCaf13, and DPCafS5-1 seem to be the promising potential genotypes that can be involved in hybridization programmes to identify transgressive segregants with desirable attributes.Abstract
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FAO. 2018. FAOSTAT Statistical Yearbook 2017. Food and Agriculture Organization of the United Nations, Rome, Italy. http://faostat.fao.org Chauhan, A. and Sharma, A. 2021. Genetic diversity in edible podded pea (Pisum sativum var. saccharatum). Indian J. Pl. Genet. Resour. : 301-04. Dey, S.S., Sharma, S.R., Parkash, C., Barwal, R.N. and Bhatia, R. 2010. Genetic Divergence in Snowball Cauliflower (Brassica oleracea L. var. botrytis). Indian J. Pl. Genet. Resour. 24: 48–51. Kumar, V., Singh, D.K., Panchbhaiya, A. and Singh, N. 2017. Genetic divergence studies in mid-season cauliflower (Brassica oleracea L. var. botrytis) through Principal Component Analysis (PCA) and D2 analysis. Int. J. Chem. Stud. 5: -93. Rao, C.R. 1952. Advanced Statistical Methods in Biometrical Research. John Wiley and Sons Inc. New York Edn. 1. Santhosha, H.M., Varalakshmi, B. and Gowda, N.C. 2011. Genetic diversity in early cauliflower (Brassica oleracea L.var. botrytis) germplasm. J. Hortic. Sci. 6: 21-24. Sharma, A., Sharma, S., Kumar, N., Rana, R.S., Sharma, P., Kumar, P. and Rani, M. 2022. Morphomolecular genetic diversity and population structure analysis in garden pea (Pisum sativum L.) genotypes using simple sequence repeat markers. PLoS ONE 17(9): e0273499. https:// doi.org/10.1371/journal.pone.027349 Sharma, J.R. 1998. Statistical and Biometrical Techniques in Plant Breeding. New Age International, New Delhi, India, 432. Sharma, S. and Singh, Y. 2018. Genetic divergence studies in cauliflower (Brassica oleracea L. var. botrytis) under mid hill conditions of Himachal Pradesh. Himachal J. Agric. Res. 44: -53. Sharma, S., Singh, Y., Sharma, S., Vishalakshi and Sekhon, B.S. 2018. Variability studies in cauliflower (Brassica oleracea L. var. botrytis) for horticultural traits under mid hill conditions of North-Western Himalayas, India. J. Pharm. Phyto. 7: 100-03. Shree, S., Kumar, R., De, N. and Kumar, R. 2019. Polygenic variations and character association in early maturing Indian cauliflowers (Brassica oleracea L. var. botrytis). Int. J. Curr. Micro. Appl. Sci. 8: 2510-20. Thompson, J.A. and Nelson, R.L. 1998. Utilization of diverse germplasm for soybean yield improvement. Crop Sci. 38: 1362-68. Varalakshmi, B., Pushpalatha, A. and Girigowda, J.R. 2010. Genetic diversity in early cauliflower. Indian J. Hortic. Sci. 67: 281-83. Zhu, S., Zhang, X., Liu, Q., Luo, T., Tang, Z. and Zhou, Y. 2018. Phenotypic variation and diversity of cauliflower (Brassica oleracea var. botrytis) inbred lines. Int. J. Agri. Biol. 20: 1041-48.
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