Character Association of Yield and Yield Components of Various Varieties of Rice (Oryza sativa L.)

Yield and yield attributing parameters are the most widely targeted traits in rice improvement programmes. The relationship between important for direct indirect selection of which contribute to yield. Information on extent association components is simultaneous correlated traits. This study was carried out determine contributions level association. Path Coefficient Analysis used evaluate character twenty-five varieties at Rivers State University Teaching Research Farm, Port Harcourt, during 2019 planting season under rainfed condition complimented by irrigation two different dates. experiments were laid a randomized complete block design. Data collected components. Leaf area, plant height, panicle length, number, weight, 100-grain weight spikelet fertility positively significantly with grain per stand. path coefficient analysis indicated that number (0.265) (0.219) had highest positive effect Conversely, grains (-0.128), days 50% flowering (-0.114), tiller (-0.095) length (-0.056) exerted negative stand 0.674 residual effects. Therefore, leaf 100 will effectively improve rice. Key words : Grain yield, Character Association, Oryza sativa, variation, DOI: 10.7176/JNSR/13-8-02 Publication date: April 30 th 2022