Abstract
Abstract
The study was conducted in the plant canopy of the Department of Horticulture and Landscape/College of Agriculture/University of Kerbala during the season 2021-2022 to study the effect of three factors, the first factor is two cultivars (Ajami and Nab Al-Jamal) and the second factor is gibberellic acid in three concentrations (0,100,200 mg. L-1) respectively, and the third factor is kinetin in three concentrations and symbolizes (0, 15, 30 mg. L-1) respectively. The results of the statistical analysis showed the following: Nab Al-Jamal cultivar, kinetin at a concentration of (15) mg. L-1 and gibberellin at concentration (100 and 200) mg. L-1 were superior in most of the studied traits as single factors. For bilateral interactions, the concentration of gibberellin with kinetin is (200 + 15) mg. L-1 has outperformed in most of the studied traits. As for the interaction of the cultivar with gibberellin, the interaction treatment (Nab Al-Jamal + 100 mg. L-1 gibberellin) gave the best results in the percentage of germination, speed of germination and germination energy, while the treatment (Ajami + 200 mg. L-1 gibberellin) gave the best results in plant height and stem diameter, while the interaction treatment (Nab Al-Jamal +200 mg. L-1 gibberellin) gave the best results in the number of leaves. The triple interaction was (Ajami + 200 gibberellin + 15 kinetin) mg. L-1 was superior in the results of the following traits: percentage of germination, germination energy, stem diameter and number of leaves. As for the overlap treatment (Nab Al-Jamal + 100 gibberellin + 0 kinetin) mg. L-1 has outperformed in germination speed and plant height.