المركبات العضوية المتطايرة النباتية و تأثيرها الأليلوباتي دراسة مقارنة و مراجعة

Abstract

This work aims to identify plant Volatile Organic Compounds (VOCs) and their allelopathic effect on neighboring plants in terms of affecting plant vital functions.

Through this study, the allelopathic effect of plant volatile organic compounds was compared and reviewed, and that was by studying two experimental articles that included scientific experiments on compounds extracted from two plants, Eucalyptus spp. and Pinus halepensis, and its effect on some physiological characteristics of plants, such as seed germination, root growth and vegetative growth.

By going deeper into the results of the two studies, we found that the two studied plants contain many volatile organic compounds, as: -

Eucalyptus leaves are rich in volatile allelopathic compounds, the most important of which are terpenes such as cineole, linalol and α-pinene, which had an inhibitory effect on the germination and growth of the stem and root of some ornamental plants such as chrysanthemum. - The needles and roots of the Pinus halepensis contain many volatile allelochemical compounds such as myrcene, α-pinene and copaene, the most important of which is β-caryophyllene, which the results of the experiments showed that it works to inhibit the germination and growth of the seeds of lettuce (Lactuca sativa) and flax (Linum strictum). It was also shown that the higher the concentration of volatile organic compounds, the stronger their inhibitory effect, and that soil bacteria have the ability to modify the negative effect of volatile organic compounds and limit their effects.