2009•Acta Agrestia SinicaRequires access
Study on the phenolic acid allelochemicals contents of the aqueous extracts of ten alfalfa cultivars at the blooming stage.
LI Zhi-hua, Yixin Shen, Liu Xin-bao, Jing Yu, Zhao FangFang, T. Luo
Open publisher page 1 citations
Abstract
The phenolic acids contents,p-hydroxybenzoic acid,caffeic acid,p-coumaric acid,chlorogenic acid and ferulic acid,in the aqueous extracts of aboveground part and root of ten alfalfa cultivars at the blooming stage were analyzed using high performance liquid chromatography(HPLC) in 2003.The results show that Defi,Alegro,and Sanditi were the cultivars with relatively high phenolic acid allelochemicals content in ten tested alfalfa cultivars and there was at least one certain phenolic acid content in the aqueous extracts of aboveground part and root of those cultivars was significantly higher than that of other cultivars.The phenolic acid content in the aqueous extracts of aboveground part was different from that in the aqueous extracts of root for a given cultivar.The total phenolic acids content in the aqueous extracts of aboveground part were higher than that of the aqueous extracts of root.In summary,the content of a given phenolic acid was different between alfalfa cultivars and different between aboveground part and root.The appropriate cultivars of alfalfa should be chosen in practice in order to rationally apply the allelopathy of weed inhibition,overcome the autotoxicity effects,and eventually enhance the ability of alfalfa production.