外来入侵物种金钟藤的水抽取物对菜薹种子萌发的影响

The Effect of Aqueous Extracts of Merremia boisiana on Seeds Germination of Brassica parachunensis

金钟藤是一种新近在广州地区被发现的局部危害作用相当巨大的外来入侵植物。本研究以金钟藤根、茎、叶的不同浓度的水抽取物处理菜薹种子,分析不同处理对菜薹种子萌发的影响。结果表明,金钟藤根、茎、叶水抽取物在实验所采用的任何浓度下均抑制菜心种子的萌发,浓度越高,抑制作用越强;在相同浓度下,金钟藤比用于对照外来植物薇甘菊抑制菜薹种子萌发的能力强;金钟藤不同器官的水抽取物的抑制强弱表现为叶>茎>根。

Merremia boisiana（ Gagnep. ）Oostr is a new foreign species discovered in Guangzhou which endangers environment. The allelopathic effect of different concentration aqueous extracts of Merremia boisiana （ Gagnep. ） Oostr on seeds germination of Brassica parachunensis L. H. Bailey had been studied. The results Showed that every concentration aqueous extracts of Merremia boisiana can restrain seeds germination of Brassica parachunensis, the biggest concentration is , the strongest restraining is. The inhibiting of Merremia boisiana is bigger than Mikania micrantha on seeds germination of Brassica parachunensis under the same concentration. The inhibiting degree of different segment aqueous extracts of Merremia boisiana is leaf 〉 stem 〉 root.