The Effect of Boron Spraying on The Yield and Its Components of Some Genotypic of Sweet Corn Planted in The Spring Season

Abstract

An experiment was conducted in the spring season of 2023 in the field of the College of Agriculture/University of Diyala to evaluate the performance of twenty-two genotypic of sugar corn, which are six pure lines (parents): (CH 11(1), TN 9(2), Nab 9(3), Wz6s(4), Wz 1(5) and RL(6)) (and fifteen individual hybrids resulting from them, in addition to the variety approved by the Ministry of Agriculture (Sama Baghdad), under the influence of boron spraying. The experiment was carried out in a randomized complete block design and a split-plot system, where boron levels were placed in the main plots: Treatment B0 without boron spraying (spraying distilled water) and Treatment B1 spraying at a concentration of 200 ppm (boric acid H3BO3) with three sprays, the first a week before male flowering, the second at the beginning of male flowering, and the third at the beginning of female flowering. The genetic combinations were placed in the secondary plots, and each factorial treatment was repeated three times. Times, and data were recorded on the following traits: number of ear(s) per plant, number of grains per ear, weight of 100 grains, weight of grains per ear, percentage of set and plant yield (g). The results showed that the genotypes differed significantly in all traits and some parents such as TN 9 (2), Wz 1 (5) and RL (6) and some hybrids such as RL×Wz 1, RL×TN 9, TN 9×CH 11 and Wz 1×Wz6s were superior in most traits. Boron spraying had a significant effect on all studied traits except for the number of ears per plant.