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Vol. 11, Issue 1 (2022)

Genetic variability and association studies in maintainer and restorer lines of rice [Oryza sativa (L.)]

Author(s):
C Jasmine, D Shivani, P Senguttuvel and D Saida Naik
Abstract:
The present investigation is carried out to study the genetic variability, heritability, correlation and path analysis of yield and yield components parameters for yield, yield attributing and nutritional characters in maintainer and restorer lines of rice. Analysis of variance revealed significant differences among all the treatments under study. High Genotypic Coefficient of Variation and Phenotypic Coefficient of Variation was observed for number of productive tillers per plant, number of spikelets per panicle, thousand grain weight, grain yield per plant, grain iron and zinc concentration. A small difference between GCV and PCV for all the characters studied indicates less influence of environment on these characters. Except days to flowering and panicle length all the characters have high heritability coupled with high genetic advance as per cent of mean indicating that these traits were controlled by additive type of gene action.
Character association studies revealed that, there was a significant positive correlation between Fe and Zn content, indicating the possibility of simultaneous improvement of both mineral elements. The characters grain yield per plant showed significant positive association with thousand grain weight indicating yield can be improved through improvement of this trait. The results of path analysis revealed that the traits thousand grain weight, number of spikelets per panicle, number of productive tillers per plant, and grain iron concentration had a high positive direct effect which could be considered as good selection criteria for yield improvement.
Pages: 569-576  |  236 Views  65 Downloads


The Pharma Innovation Journal
How to cite this article:
C Jasmine, D Shivani, P Senguttuvel, D Saida Naik. Genetic variability and association studies in maintainer and restorer lines of rice [Oryza sativa (L.)]. Pharma Innovation 2022;11(1):569-576.

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