GENETIC PARAMETERS, CORRELATIONS, AND PATH COEFFICIENT FOR YIELD AND SOME OF ITS COMPONENTS IN MAIZE AT CONCENTRATIONS OF SALICYLIC ACID

Abstract

A factorial experiment was conducted in the autumn season 2020-2021, which included the study on two factors: the first: three concentrations of salicylic acid (0, 100, and 200) ppm placed in the main plots, while the second factor is ten hybrids introduced from (Sagunto, Pl472, Simon Pl538, Podio, Pl700, Torro, 426t6099, Dario, and local hybrid Nehrin) randomized complete block design according to the split-plot and with three replication. The results showed significant phenotypic variance in the traits of ear diameter if it reached 1.894. The phenotypic variance was significant in the two traits of plant height and ear length if it amounted to 1.217-0.321, respectively, while the coefficient of phenotypic variation was medium. The highest direct effect of the weight of 300 grains on the yield was 0.06602 at the concentration (0), and the highest direct effect of the traits of the ear weight on the yield, which amounted to 0.96506 at the concentration (100), and the highest direct effect on the yield of the ear weight, which amounted to 0.47730. The grains per ear were the ear weight and the weight of 300 grains, which amounted to 0.466, 0.839, 0.501, 0.636, 0.982, and 0.63, respectively at a concentration (100), and the highest phenotypic correlation with the yield for ear diameter was a number of grains per ear, the ear weight and the weight of 300 grains at the concentration (200).