Character association and Path analysis of Grain Yield and Yield Components in Maize (Zea mays L.)

摘要

An investigation was carried out to assess the character association and path analysis for nine characters viz., days to 50% tasseling, days to 50% silking, days to maturity, plant height, cob length, kernel rows per cob, 100-seed weight, grain protein content and grain yield per plant in 24 genotypes (fifteen hybrids, their eight parents along with a check). Association studies revealed that, four out of nine characters exhibited highly significant positive correlation with grain yield per plant. However, the traits cob length, 100-seed weight, kernel rows per cob, plant height and days to 50% tasseling were found to possess significant association in desirable direction with grain yield per plant at both genotypic and phenotypic levels. Path analysis studies revealed that cob length, 100-seed weight and kernel rows per cob true relationship by establishing significant positive association and direct effect on grain yield per plant. ?