Correlation and Path Analysis for Yield and Related Traits in Upland Rice (Oryza Sativa L.) Varieties

Year 2021, Volume: 4 Issue: 1, 18 - 24, 01.01.2021

Bantalem Zeleke Fisseha Worede

Abstract

The study was carried out on twenty varieties of upland rice (oryza sativa L.) to find out the correlation and path co-efficient values among the grain yield and its’ components. Genotypic and phenotypic coefficients of variation ranged from 6.44 (days to maturity) to 30.47% (yield per plant) and 6.51 (days to maturity) to 30.67% (yield per plant), respectively. High genotypic and phenotypic coefficients of variation with low magnitude of differences between the two were observed for days to maturity, yield per plant and number of filled grains per panicle. Highly significant (P<0.01) and positive phenotypic and genotypic correlations were observed between grain yield with yield per plant, number of filled grains per panicle, biomass yield in the range between 0.55 to 0.78. The highest positive and significant genotypic direct effects on grain yield were exerted by plant height, harvest index, days to maturity and biomass yield, suggesting higher chance of improving yield of upland rice through indirect selection of these traits. Grain yield was significantly and positively associated with yield per plant, number of filled grain panicle-1, and number of fertile tillers per plant and harvest index.

Keywords

Correlation coefficient, Path coefficient, Component traits, Varieties

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