生态环境学报2016，Vol.25Issue(5)：795-800,6.DOI:10.16258/j.cnki.1674-5906.2016.05.010
波斯婆婆纳的繁殖能力及其入侵原因探析
The Reproductive Capacity of Veronica Persica and Implications for Its Worldwide Invasion
摘要
Abstract
Invasive plants have become a hot research topic in recent years. For successful invasive species, the capacity of sexual and asexual reproduction contributes particularity and advantages to their invasion. Exploring the reproductive characteristics of certain invasive species can help us effectively respond and manage invasion from both ecological and economic perspectives. In this study, we examined the reproductive ability ofVeronica persica, with the aim of explaining how it can expand its distribution in a short period of time and finally become a worldwide invasive weed. We have conducted observational experiments on flowers and pollinators, surveys on the density of natural populations and segments of individual plant. We have also quantified the level of sexual and asexual reproduction inV. persica through the experiments of natural and artificial pollination, and common garden transplant and growth. The results showed that the sexual reproduction ofV. persica was pollinator-dependent and self-compatible. There was high level of fruit-set and seed-set under natural, self, and supplemental pollination, and the seeds germinated fast with 70% germination rate, suggesting a relatively strong sexual reproductive ability. Meanwhile, the density ofV. persica in natural populations was high, with highly developed stolons and around 8 ramets per genet. The transplant experiment ofV. persica yielded 83% survivorship and rapid growth of 6.5 cm in 40 days, indicating a high level of asexual reproduction. Our results have also pointed out that there is strong correlation between the vegetative growth and sexual reproduction inV. persica. As a whole, the strong reproductive ability and few restrictive environmental factors probably contribute a lot in the successful worldwide invasion of V. persica.关键词
无性繁殖/传粉/有性繁殖/波斯婆婆纳Key words
asexual reproduction/pollination/sexual reproduction/Veronica persica分类
环境科学引用本文复制引用
谢翠容,汤林彬,刘茗枫,戴璨..波斯婆婆纳的繁殖能力及其入侵原因探析[J].生态环境学报,2016,25(5):795-800,6.基金项目
国家自然科学基金项目（31270279）；教育部留学回国人员科研启动基金项目 （）
