Correlation and Path Analysis of Major Agronomic Character of Maize

Twenty-five crossed combinations were made by the method of incomplete diallel crosses.Heridity correlation and heredity path of ear length and other7agronomic characters with grain yield of maize were analyzed.The results indicated that heredity correlation coefficient of ear length and other7agronomic characters in grain yield except rows per ear showed positive value.Among them,heredity correlation coefficient of ear length,kernels perrow,fertile length with grain yield all were significant difference at p=0.01.The result of path analysis indicated directly path coefficient of ear lgngth,ear diameter,produced grain percentage and grain all were positive.In these directly path coefficient of ear length with grain yield was the largest.It was8.7604.Directly path coefficient of ear diameter with grain yield was second(p=7.2017).And directly path coefficient of1000grain weight etc.4charac-ters was negative.When selecting high grain yield hybrids of maize,we must pay more attention to select types of long ear,long-diameter ear and high produced grain percentage.