Evaluation of allelopathic activity of extracts of plant organs of various varieties of winter wheat

Abstract

The article presents the results of scientific studies devoted to the study of the effect of water extracts of the roots, stems, leaves and grain of winter wheat plants on seed germination and root growth of single-day watercress seedlings. Samples of plants of the studied winter wheat varieties were taken in the phase of full grain ripeness. Water extracts of plant organs at a concentration of 1:100 were prepared for the Biotest. According to the results of research, the stimulating and inhibitory effect of water extracts from the organs of winter wheat plants on seed germination and growth of single-day watercress seedlings was established, depending on varietal characteristics. Water extracts from the roots of plants of all studied varieties reduced the germination rate of test culture seeds by 4.0 up to 40.4% compared to the control, and grain extracts had a slight stimulating effect. It is established that the variety Schedrivka Kyivs'ka has a high allelopathic activity. Water extracts of organs of soft winter wheat varieties Vidrada and MIP Assol were determined to be neutral to the germination of watercress seeds.