入侵植物南美蟛蜞菊不同组织部位浸提物的化感作用研究  

Allelopathic effect of alcohol extracts from different tissues of Wedelia trilobata L.

作　　者：孙见凡[1,2] 吴易[1] 吴鹏飞[1] 杜道林[1,2] 

机构地区：[1]江苏大学环境与安全工程学院,江苏镇江212013 [2]江苏大学现代农业装备与技术教育部重点实验室,江苏镇江212013

出　　处：《广东农业科学》2013年第23期74-78,共5页Guangdong Agricultural Sciences

基　　金：国家自然科学基金(31200317;31170386);中国博士后基金(2012M521000);江苏大学高级专业人才科研启动基金(11JDG1147;09JDG020)

摘　　要：以油菜和番茄为受试植物,以立枯丝核病原菌和西瓜枯萎病病原菌为受试菌种,研究了南美蟛蜞菊干茎、干叶、湿茎、湿叶酒精浸提物对这两种经济作物种子萌发时的化感作用活性以及对这两种病原菌生长的影响。结果表明,这4种浸提物对油菜种子的活力指数均有不同程度的抑制作用,干叶、湿叶浸提物对番茄种子的活力指数有不同程度的抑制作用;这4种浸提物对立枯丝核病原菌的生长均有明显的抑制作用,干叶、湿茎浸提物对西瓜枯萎病病原菌的生长有抑制作用,但干茎、湿叶浸提物对西瓜枯萎病病原菌的生长存在促进作用。The allelopathic potentials of alcohol extracts from Wedelia trilobata to economic crops and pathogenic fungus were investigated to determine the role of allelopathy in successful invasion. The results showed that the four alcohol extracts from Wedelia trilobata dry stems, dry leaves, wet stems and wet leaves all had different inhibitory effects on the rape of seed vigor index. Alcohol extracts from wet leaves and dry leaves had different inhibitory effects on the tomato of seed vigor index. The four alcohol extracts all have obvious inhibitory effect on the growth of Rhizoctonia solani. Alcohol extracts from wet leaves and dry stems have inhibitory effect on the growth of Fusarium oxysporium fsp.niveum, but the alcohol extracts of dry stems and wet leaves promote the growth of Fusarium oxysporiumfsp.niveum.

关 键 词：南美蟛蜞菊 浸提物 经济作物 病原真菌 化感作用 

分 类 号：Q948.13[生物学—植物学]