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Determine genetic diversity, trait heritability, and character correlations among rice genotypes to identify superior lines for crop breeding programs.

January 1, 2021Natural Resources and Sustainable DevelopmentOpen Access

Assessment of Variability, Heritability and Correlation in Rice (Oryza Sativa L.) Genotypes

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JSJiban ShresthaNepal Agricultural Research Council SSSubash SubedıKarnali Academy of Health Sciences SSSudeep SubediKathmandu University

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Implication

Randomized block experiment demonstrates significant yield variability and genetic divergence in rice genotypes, highlighting useful selection targets for crop breeding.

Key Points

Determine genetic diversity, trait heritability, and character correlations among rice genotypes to identify superior lines for crop breeding programs.
Evaluated 12 rice genotypes using a randomized complete block design with three replications in Kabre, Dolakha, Nepal in 2020.
Measured agronomic characteristics including plant height, panicle length, number of tillers per plant, thousand-grain weight, and grain yield.
Grain yield reached a maximum in genotype NR11236-B-B-25 (5.24 t/ha), followed by IR88965-39-1-6-4 (4.29 t/ha) and NR11321-B-B-77-3 (4.09 t/ha).
Grain yield exhibited the highest genotypic coefficient of variation (21.34%), phenotypic coefficient of variation (25.42%), and genetic advance as percent of mean (36.91%).
Grain yield showed moderate positive correlations with thousand-grain weight (r = 0.46) and panicle length (r = 0.35).

Cite This Study

Shrestha et al. (2021) studied this question.

synapsesocial.com/papers/6aaa41a7d0a3c768807e5e5d https://doi.org/10.31924/nrsd.v11i2.077

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Implication

Randomized block experiment demonstrates significant yield variability and genetic divergence in rice genotypes, highlighting useful selection targets for crop breeding.

Assessment of Variability, Heritability and Correlation in Rice (Oryza Sativa L.) Genotypes

Discussion

Member takes

Implication

Key Points

Cite This Study

Assessment of Variability, Heritability and Correlation in Rice (Oryza Sativa L.) Genotypes

Discussion

Member takes

Implication

Key Points

Cite This Study

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