Vol. 18 No. 2
Correlation and path analysis in rice (Oryza sativa L.) CMS lines
Author(s): K. KRISHNA, Y. C. MOHAN, V. G. SHANKAR, G. PARIMALA AND L. KRISHNA
Abstract:
Forty rice genotypes were assessed to determine yield attributing traits. Correlations have found that choosing plants with high hulling percentage, stigma exertion percentage, rice head recovery percentage, milled grain percentage, panicle number per plant, full grain number per panicle, and shorter days to 50% heading results in higher yields. Path coefficient findings indicate that test weight had the strongest positive direct effect on single plant yield, preceded by full grain number per panicle, hulling %, and stigma exertion percentage, demonstrating that selecting for these traits was likely to result in a direct enhancement in single plant yield, Regression analysis found that the days to 50% heading, full grain number per panicle, stigma exertion percentage, hulling percentage, milled grain percentage and rice head recovery percentage had a significant and positive relationship with single plant yield. As a result, accessions with a greater panicle number per plant,higher full grain number per panicle, higher proportion of stigma exertion, early flowering, and rice head recovery would be most suited for a yield advancement strategy.
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