REGULATION OF GROWTH PROCESSES AND PRODUCTIVITY OF CUCUMBER PLANTS USING GROWTH REGULATORS

Abstract

The article considers the peculiarities of growth processes and productivity of cucumber plants under the influence of plant growth regulators with different directions of action.The experiment was performed on cucumber plants of the Game hybrid. Pre-sowing soaking of seeds was carried out with aqueous solutions of ethephon (0.25%) and epine (1 mg / l). In the phase of 2-3 true leaves, plants were treated with drugs. Control variants were treated with tap water.During the research, the biometric parameters of plants, leaf surface area, the number of flowers and the ratio of their sexual forms, seed productivity of plants, as well as phenological observations were determined.It was found that pre-sowing soaking of cucumber seeds with growth regulators ethephon and epine had a positive effect on the growth and development of seedlings. Intensification of growth processes of aboveground and underground parts of plants was noted with the use of drugs. The quality of seedlings was much higher than control.It was investigated that under the action of epine the linear size of the stem of cucumber plants increased by 35% compared with the control. The use of the inhibitor type drug ethephon led to a decrease in this parameter by 3%, but it did not reduce the quality of seedlings. Under the action of growth regulators, the average weight of the aboveground part of cucumber plants increased.Pre-sowing treatment of cucumber seeds with plant growth regulators caused to increase in the leaf surface.It was found that the use of plant growth regulators epin and ethephon increased the length and raw weight of the root: under the action of ethephon these indices increased by 5% and 11% respectively, and when using epin - by 4% and 17% compared to control.It was shown that the treatment of cucumber seedlings in the phase of 2 true leaves with growth regulators led to significant changes in the morphogenesis of the culture. Ethephone application significantly inhibited the growth of cucumber plants - the length of the main stem and side shoots decreased by 18% and 16%, respectively. And epin treatment increased these indicators by 7% and 5%, compared with the control.It was found that after treatment with plant growth regulators, the number of lateral shoots increased, which led to an enlargement of the leaf area.The use of growth regulators caused an increase in the number of seeds per plant by 24–34%. The number of seeds per plant and their weight increased in the experimental plants: under the action of epine these indicators increased by 21% and 22%, respectively, and treatment with ethephon led to an enlargement of 25% and 54% compared to the control.