EVALUATION OF SOME SOYBEAN GENOTYPES UNDER DIFFERENT SOWING DATES BY EXPLORATORY FACTOR ANALYSIS | ||
| Egyptian Journal of Plant Breeding | ||
| Volume 29, Issue 1, April 2025, Pages 89-108 PDF (755.91 K) | ||
| Document Type: Original research | ||
| DOI: 10.12816/ejpb.2025.459308 | ||
| Abstract | ||
| A field trial was conducted in the 2022 and 2023 seasons at Mallawy Agric. Res., Station, El-Minia Governorate, Middle Egypt, to study the effect of different sowing dates (May 5th, May 20th, and June 5th) on earliness, seed yield, and some of the attributes of six soybean genotypes. The experimental design used was a split-plot design in a randomized complete block arrangement with three replications. Results showed a significant effect of sowing date on all studied traits, and the interactions between sowing dates and soybean genotypes were significant for all traits, except for plant height. The highest seed weight/plant and seed yield (ton/fed) were obtained from the second planting date on May 20th, with the soybean cultivar Giza 22, followed by Giza 111. The factor analysis technique divided the studied variables into two main factors at the three dates, accounting for 78.3%, 79.2%, and 76.7%, respectively, of the total variability in the dependence structure of soybean seed weight/plant for the three dates. The superior genotype across the three sowing dates was Giza 22, suggesting that this cultivar was the best under the late sowing date. Early maturity was in favor of Giza111 and hybrid 30 at the three planting dates. The behavior of the genotypes was similar across different dates, but the rate of crop change varies depending on each variety, as evident in the interaction between dates and varieties. | ||
| Keywords | ||
| Soybean; Sowing date; Yield and its components; Exploratory factor analysis | ||
|
Statistics Article View: 6 PDF Download: 2 |
||
