Effects of spraying GA3 and KT-30 on the vegetative and flowering growth of ranunculus asiaticus

الملخص EN

This research was conducted to study the effects of spraying two growth regulators : gibberellic acid and KT-30 at three concentrations for each, on the vegetative and flowering growth of Ranunculus asiaticus plant.

The results can be summarized as follows : 1.

The process of spraying GA3 at a concentration of 100 mg I gave the highest plant height and peduncle length only, while the concentration of 50 mg gave a significant increases in all the remaining characters of vegetative growth : the number of secondary branches plant, the number of leaves plant, the leaf area, the total chlorophyll content of the leaves, the percentage of dry matter and total carbohydrates in the leaves, as well as a significant increases in all the following characters of floral growth : early flowering, number of flowers plant, the diameter of the flower and the peduncle, the percentage of dry matter in the flowers, and the vase life.

2.

The process of spraying KT-30 at a concentration of 20 mg gave a significant increases in all studied characters of the vegetative growth and flowering 3.

The binary interactions between the concentrations of the two factors showed a significant effect in all the studied characters, and the treatment GA100 X GA50 produced the best rate just in two characters : height of plant and peduncle, while the treatment GA50 X KT20 outperformed in all other characters of vegetative growth and flowering.