Correlation and phenotypic path coefficient studies in rice under system of aerobic rice production
Study revealed a positive and significant correlation with yield of grain due to straw yield, filled grains panicle¹, number of ear bearing tiller m⁻², length of panicle and leaf area index. The range of simple correlation ‘r’ being. 668** (LAI) to. 969** (Straw yield). Correlation matrix indicated that most of the characters are positively and significantly correlated with each other except plant height, test weight and number of chaffs per panicle. Positive direct contribution to grain yield as observed through phenotypic path analysis was observed through straw yield (.700), straw yield and number of filled grains panicle ⁻¹ exhibited the highest positive indirect effect across the characters with corresponding values of. 969 and. 920.
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