Genetic variation and inter-relationship among grain yield and its components in maize (Zea mays L.)

Abstract

The present investigation was carried out to assess the genetic variability parameters, correlation and path analysis in twenty four maize genotypes for eleven yield and its contributing traits during kharif, 2017 at Field Experimentation Centre, Department of Genetics and Plant Breeding, Naini Agricultural Institute, Sam Higginbottom University of Agriculture, Technology and Sciences, Uttar Pradesh in Randomized Block Design with three replications. The difference between Phenotypic Coefficient of Variation and Genotypic Coefficient of Variation was low for all the character indicating less influenced by the environment. The characters like 100 grain weight, grain rows/cob and cob length showed high heritability coupled with high genetic advance as percentage of mean indicating the preponderance of additive gene action. Hence, direct selection for these characters would be very effective for further improvement of grain yield.