Chernyak D.M.
Современные проблемы науки и образования 2017; (5): 349
The article presents the results of experiments on the allelopathic activity of the Heracleum sosnowskyi and Heracleum moellendorffii edificators. The effect of soil H. sosnowskyi and H. moellendorffii on the parameters of the seed quality of the seeds of the test object is shown. During the experiment, under conditions of soil under H. sosnowskyi and H. moellendorffii, a decrease in the seed germination energy of the test object was found to be 90.7% and 38.3%, respectively, compared with the control. Timeline: problems associated with control at 87.3, and in soil conditions H. moellendorffii by 26.7%. The growth force of the test object in the soil under H. sosnowskyi decreased by 75.3%, and under H. moellendorffii the decrease in the growth force was manifested weaker - by 12.7% compared to the control. Allelopathic activity was assessed by the method of biotesting to inhibit the growth of the seedlings of the test object. The lag of the total length of the sprout from the control parameters was 52.37%, and the stenosis of the stalk was 49.49%. A lower sensitivity to the soil services of the donor plant showed an increase in the cotyledons of the test object, the lag in the length of which from the control was 17.30%. The suppressive effect of secondary metabolites was also on root growth, the length of which lagged behind the control by 37.04%., Control values by 1% and 22%, respectively. Observations showed that under the conditions created by H. moellendorffii, the average root and sprout length was in accordance with the conditions created by H. sosnowskyi, which was 8.90%, 7.48%, respectively. Calculated the index of allelopathic activity (phytotoxicity) of soil on the main organs of the sprout.
