전동싸리의 알레로패시 효과

Abstract

This study was conducted to investigate plant species diversity and the allelopathic effects of aqueous extract from Melilotus suaveolens on the germination of several receptor plants and growth of fungal plant pathogens. Number of species and species diversity for close to patch of M. suaveolens was similar in between site 1(7.7±1.5, 1.7±0.1) and site 2(7.7±2.1, 1.8±0.3), but significantly reduced in site 3(3.7±0.6, 0.7±0.2). Relative germination rate, mean germination days, relative growth rate, the fresh weight and seedling root hair development have were reduced with increased concentrate of the extract. The response of receptor plants to M. suaveolens extract was different depending on the plant species and the plant parts. Root growth was more inhibited than shoot growth. In addition, the suppression in the monocotyledonous plant, was worse than in the dicotyledonous plant. Generally, antifungal activity was appeared by increased concentration of the aqueous extracts from M. suaveolens but it varied with species of microbes and treatment of aqueous extracts.. Especially, the grass fungus was significantly inhibited. The content of total phenolic compound in M. suaveolens was 895.9(㎎/ℓ)±57.74, which is an allelopathic chemical. Therefore it can be concluded that M. suaveolens extracts includes biochemical substances that control growth of receptor plants and inhibit growth of several fungal pathogens.