三裂叶蟛蜞菊对两种草坪植物的化感作用  

Allelopathic effect of extracts from Wedelia trilobata on two turfgrass plants

作　　者：许华[1] 汪波[1] 魏宇昆[2] 张成[1] 颜亨梅[1] 刘烨[1] 李娜[1] 蒋梦娇[1] 

机构地区：[1]北京师范大学珠海分校工程技术学院,广东珠海519085 [2]中国科学院上海辰山植物科学研究中心,上海201602

出　　处：《广东农业科学》2011年第14期53-55,共3页Guangdong Agricultural Sciences

摘　　要：为了研究三裂叶蟛蜞菊(Wedelia trilobata)对狗牙根(Cynodon dactylon)和百喜草(Paspalum notatum)的化感作用,以不同浓度的三裂叶蟛蜞菊提取液处理这两种草坪植物的种子和幼苗,测定了种子萌发和幼苗生长指标。结果表明:三裂叶蟛蜞菊提取液对这两种植物种子的萌发和幼苗胚根的生长产生了抑制作用,且百喜草种子的萌发更容易受到抑制,狗牙根幼苗胚根的生长更容易受到抑制,但对这两种植物胚芽的生长均未产生影响。To study the allelopathic effects of extracts from Wedelia trilobata on Cynodon dactylon and Paspalum notatum,seeds and seedlings of the two turfgrass plants were treated with extracts from Wedelia trilobata in different concentrations,and the germination indexes of seeds and growth characters of seedlings were measured.The results showed that the seed germination and radicel growth of the two turfgrass plants were repressed by extracts from Wedelia trilobata.Specifically,repression of seed germination of Paspalum notatum and radicel growth of Cynodon dactylon was more apparent than those of their counterparts respectively.However,embryo length of the two turfgrass seedlings were not been influenced by extracts from Wedelia trilobata.Cultivation of the two turfgrass plants should be conducted with intensive control of Wedelia trilobata

关 键 词：三裂叶蟛蜞菊 狗牙根 百喜草 草坪植物 化感作用 

分 类 号：Q948.12[生物学—植物学]