소리쟁이속 추출액이 켄터키블루그라스의 초기생장과 주요 잔디 병원균의 균사생장에 미치는 영향

Abstract

This study was conducted to investigate the effect of extracts from genus Rumex which is widely grown in domestic area on germination and seedling growth of cool season turfgrass-kentucky blue grass(Poa pratensis) and also has antifungal activity against turfgrass fungal diseases. The analysis of total phenolic compounds from extracts of genus Rumex revealed highest phenolic compound(1254.39ml/L) in Rumex obtusifolius. The amount of total phenolic compounds of extracts from Rumex spp. was maximum in Rumex obtusifolius followed by R. acetosa, R. crispus, R. acetosella respectively. Generally, the germination and seedling growth are decreased by higher concentration of the extracts from genus Rumex. The activity of extracts depended on kind of plants and treatment of the extracts. The relative germination rate and the mean germination time of kentucky blue grass was inhibited sharply (6.7%) in extracts of Rumex crispus at concentrations more than 50%. Especially, root growth was more inhibited than shoot growth by the extracts. Antifungal activities of extract fractions were observed in most of fungal species tested in this experiment. The extracts from Rumex acetosella showed high antifungal activities against Pythium graminicola, P. ultimum, Rhizoctonia cerealis. Exceptionally, less antifungal activities was shown against growth of R. solaniAG2-2(Ⅳ). Therefore it can be concluded that genus Rumex extracts includes biochemical substances that controls growth of kentucky blue grass and inhibits growth of several fungal pathogens.