Genetic Components and Variability Assessment for Grain Yield and Its Accrediting Traits in Maize (Zea mays L.)

Understanding the variability, heritability, and genetic advance in maize is crucial for efficient plant breeding improvement programmes. The present investigation was conducted to evaluate various parameters related assessment of variability nature associations among traits affecting grain yield 80 genotypes (Zea mays L.) at Research Farm, Department Genetics & Plant Breeding, College Agriculture, Gwalior, M.P., India during Rabi seasons 2019-20 Kharif 2020-21. analysis variance revealed that highly significant differences exist inbred lines, their hybrids checks all characters. Under irrigated partial conditions, viz., days 50 percent tasselling silking, anthesis silking interval (ASI), height membrane stability index exhibited high GCV PCV. characters with highest heritability coupled higher were found namely: 50% tasselling, interval, height, numbers kernel rows per cob, rows, seed (g), cobs plant, maturity, cob girth (cm), turgid weight saturation water deficit both under conditions. High as mean indicated preponderance additive gene action controlling traits. Hence direct selection such would be effective improving maize.