Genetic Variability, Heritability and Genetic Advance of Aromatic Rice for Yield and its Components

Author: Nayanmoni Borah, Partha Pratim Behera, Vedant Vikrom Borah and Ramendra Nath Sarma

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Abstract

The improvement of yield in aromatic rice is crucial not only to meet the growing demand for its flavorful nature but also to ensure an adequate supply for a population that appreciates its unique qualities. Enhancing both the yield and quality of aromatic rice will not only contribute to food security but also cater to the preferences of consumers seeking a delightful culinary experience. In this regard present investigation consists of 94 aromatic rice genotypes and the experiment was conducted during Sali2019 in Randomized Block Design with three replications. The data were recorded for 17 morphological characters to study genetic variability, heritability, genetic advance and varieties performance. On the basis of mean performance, high grain yield per plant were exhibited by the varieties IRRI 52 followed by Boga Maniki Modhuri Joha, Balum, Chakhow Poreton and Kon Joha-1, accordingly and the genotype Chakhow Poreton was resulted with high performance of grain yield per plant with early flowering followed by Chakhow Sempak, Krishna Joha, Kon Joha-2 and Bor Joha, correspondingly. The highest GCV and PCV were observed for no. of unfilled grain, grain yield per plant, and leaf aroma, indicating these characters could be used for crop improvement. High heritability and genetic advance were also observed for these traits, suggesting that additive gene effects are dominant and effective selection is possible. Our study would make a remarkable contribution towards the understanding of the extent of genetic diversity in indigenous aromatic rice along, along with identification of suitable genotypes to use in future breeding programs.

Keywords

Aromatic rice, Genetic variability, Heritability, Genetic advance, GCV and PCV

Conclusion

The study found that the traits most important for improving rice yield, namely number of filled grains, number of unfilled grains, total spikelet, grain length, grain breadth, LB ratio, grain length without husk, grain breadth without husk, dehusked LB ratio, leaf aroma, thousand grain weight, and grain yield per plant, all have high heritability and genetic advance. This means that these traits are largely determined by the additive effects of genes, and can therefore be improved through hybridization and selection. The high heritability and genetic advance for these traits is good news for rice breeders, as it means that they can make significant progress in improving rice yield through selective breeding. This is important as rice is a staple food for billions of people around the world, and increasing rice yield is essential to ensuring food security. The study also found that the traits leaf aroma and thousand grain weights had the highest heritability and genetic advance.

References

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How to cite this article

Nayanmoni Borah, Partha Pratim Behera, Vedant Vikrom Borah and Ramendra Nath Sarma (2023). Genetic Variability, Heritability and Genetic Advance of Aromatic Rice for Yield and its Components. Biological Forum – An International Journal, 15(5): 1516-1522.