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Genotypic and Phenotypic Correlation Coefficient Study to Identify Best Yield and Yield Attributing Trait for Selection in Maize (Zea mays L.)

Selection based on perseperformance may not prove effective because yield is a complex trait, whereas selection based on its component character would prove more effective. In this study, plant height, ear height, number of kernels per row, number of kernels per ear, shelling percentage and test weight all had significant and positive associations with grain yield per plant at genotypic and phenotypic levels. General results of correlation studies suggested that grain yield per plant had positive and significant correlation with plant height, ear height, number of kernels per ear, number of kernels per row, ear weight, shelling percent and test weight. While days to 50 per cent tasseling and days to 50 per cent silking established negative but nonsignificant association in at both genotypic and phenotypic levels.