Invasion and spreading of Cabomba caroliniana revealed by RAPD markers  

作　　者：金孝锋 丁炳扬 高树琴 姜维梅 

机构地区：[1]College of Life Sciences, Zhejiang University,Hangzhou 310012, China [2]School of Life & Environment Science, Wenzhou Normal College,Wenzhou 325027, China

出　　处：《Chinese Journal of Oceanology and Limnology》2005年第4期406-413,共8页中国海洋湖沼学报（英文版）

基　　金：Supported by National Natural Science Foundation of China (No.39970145) and Major State Basic Research Development Program ofChina (No. G2000046803)

摘　　要：Applying randomly amplified polymorphic DNA (RAPD), the genetic variation of Cabomba caro- liniana Gray (cabomba or fanwort), a new alien plant in China, was analyzed in this paper. Total 143 bands, in- cluding 47 polymorphic bands, were amplified from 23 primers in 20 samples. The sampling distance was large, but its genetic diversity was low. The main results were that: (1) Cabomba, which grew and dispersed mainly in fragment, was an abundant and dominant species in freshwater, and its main dispersal mechanism was vegetative reproduction. (2) Cabomba was originally introduced into China as an aquarium submerged plant. Somehow, those discarded cabomba became invasive species in the areas of Hangzhou, Shanghai, and Meicheng, and other places. (3) Although the level of genetic diversity in cabomba was low, their rapid dispersion and propagation could seriously harm to local aquatic community. Therefore, specific measure should be used to control cabomba from uncontrolled spreading and damage to local vegetation communities.Applying randomly amplified polymorphic DNA （RAPD）, the genetic variation of Cabomba caroliniana Gray （cabomba or fanwort）, a new alien plant in China, was analyzed in this paper. Total 143 bands, including 47 polymorphic bands, were amplified from 23 primers in 20 samples. The sampling distance was large, but its genetic diversity was low. The main results were that： （1） Cabomba, which grew and dispersed mainly in fragment, was an abundant and dominant species in freshwater, and its main dispersal mechanism was vegetative reproduction. （2） Cabomba was originally introduced into China as an aquarium submerged plant. Somehow, those discarded cabomba became invasive species in the areas of Hangzhou, Shanghai, and Meicheng, and other places. （3） Although the level of genetic diversity in cabomba was low, their rapid dispersion and propagation could seriously harm to local aquatic community. Therefore, specific measure should be used to control cabomba from uncontrolled spreading and damage to local vegetation communities.

关 键 词：Cabomba caroliniana （cabomba） alien species biological invasion genetic diversity RAPD-PCR 

分 类 号：Q943[生物学—植物学]