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NAAS Journal
International Journal of Biology Sciences

Vol. 7, Issue 1, Part C (2025)

Genetic variability and diversity analysis in advance breeding lines of rice (Oryza sativa L.)

Author(s):

Vilash Bharti, Ravindra Kumar Verma, Abhinav Sao and Sweta Soni

Abstract:

The current study evaluated 53 (49+4) rice genotypes during Kharif, 2023 for seed yield and its component traits at Rice Research Unit, Department of Genetics and Plant Breeding, IGKV, Raipur. The experiment was conducted in Randomized Block Design in two replications to calculate genetic variability parameters and genetic divergence analysis. The variance analysis revealed significant genotypic differences across all 10 traits studied. Most of the quality parameters investigation results into marginal differences in both PCV (Phenotypic coefficient of variation) and GCV (Genotypic coefficient of variation) values. These findings suggest that the environmental impact on the expression of these traits is limited, while genotypic variations play a more significant role. This allows for effective selection processes to be implemented, leveraging the genotypic diversity to drive desired trait improvements. Among the studied attributes, the traits like effective tillers per plant (13.94 and 19.29), number of spikelets per panicle (19.69 and 33.17), number of filled spikelets per panicle (18.89 and 23.43), 1000 seed weight (14.78 g and 16.09 g) and harvest index (14.77% and 26.89%) exhibited moderate magnitude of PCV coupled with GCV values. These values indicate the extent of genetic variation and the potential for selection and improvement in these traits. Fifty-three entries were grouped into 10 clusters. The highest number of genotypes appeared in Cluster II, which contain 24 genotypes followed by Cluster I, which contain 14 genotypes followed by Cluster III, which contain 5 genotypes followed by Cluster IV, which contain 2 genotypes followed by Cluster V, which contain 3 genotypes followed by Cluster VI, VII, VIII, IX and X had one accession, respectively.

Pages: 150-155  |  67 Views  22 Downloads


International Journal of Biology Sciences
How to cite this article:
Vilash Bharti, Ravindra Kumar Verma, Abhinav Sao and Sweta Soni. Genetic variability and diversity analysis in advance breeding lines of rice (Oryza sativa L.). Int. J. Biol. Sci. 2025;7(1):150-155. DOI: 10.33545/26649926.2025.v7.i1c.282
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