南京农业大学学报2012，Vol.35Issue(1)：135-138,4.
凤眼莲有性繁殖与种子结构及其活力研究
Research on sexual reproduction, seed structure and its vigor of Eichhornia crassipes
摘要
Abstract
Sexual reproduction, seed structure and its vigor of Eichhornia crassipes in Dianchi Lake were investigated in order to determine whether its seeds dispersion would initiate ecological risk. The results showed that E. Crassipes preferred sexual reproduction by blossom with the ability of clonal propagation decreasing in Waihai Baishan Bay waters of Dianchi Lake, but the seed setting rate was very low,about 5% -10%. The seeds of E. Crassipes were extremely small and the thousand seed weight was only (0. 429±0. 009) g. Observed with an unaided eye, the ripe seeds were of yellowish-brown color and shaped like common jujube seeds. Observed with scanning electric microscope (SEM) , single embryo was shaped like bone which was surrounded by endosperm and spermoderm. Test results of seed vigor showed that 87% -95% of full seeds had a viability.关键词
凤眼莲/有性繁殖/种子结构/种子活力/生态风险Key words
Eichhornia crassipes/ sexual reproduction/ seed structure/ seed vigor/ ecological risk分类
资源环境引用本文复制引用
张迎颖,吴富勤,张志勇,刘海琴,王亚雷,王智,张君倩,申仕康,严少华..凤眼莲有性繁殖与种子结构及其活力研究[J].南京农业大学学报,2012,35(1):135-138,4.基金项目
国家科技支撑计划项目(2009BAC63B01) （2009BAC63B01）
云南省社会发展专项(2009CA034) （2009CA034）
