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Effects of self-compatibility on the distribution range of invasive European plants in North America

机译：自相容性对欧洲入侵欧洲植物在北美分布范围的影响

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Many plant species have been introduced to new continents, but only a small subset of these have become invasive. It has been predicted that self-compatible species, particularly those that do not need the services of pollinators, are more likely to establish and spread after long-distance dispersal. We tested whether this hypothesis, commonly called Baker's law, applies to 361 species that have invaded the United States from Europe. Species capable of autonomous seed production occurred in significantly more states than species requiring a pollen vector. Moreover, of the species that are not capable of autonomous seed production, self-compatible species occurred in significantly more states than those that are not self-compatible. The positive effect of autonomous seed production on the range of invasion was larger for abiotically pollinated species than for biotically pollinated species and for monocarpic species than for polycarpic species. These results support Baker's law, and we recommend that screening protocols for predicting invasiveness of species considered for introduction should include assessment of their breeding system.
机译：许多植物物种已被引入新大陆，但其中只有一小部分已成为入侵物种。据预测，自相容物种，特别是那些不需要传粉媒介的物种，在长距离扩散后更容易建立和传播。我们测试了这一假设（通常称为贝克定律）是否适用于从欧洲入侵美国的361个物种。与需要花粉载体的物种相比，具有自主种子生产能力的物种出现的状态要多得多。此外，在不具有自主种子生产能力的物种中，自适应物种的状态比不自适应物种的状态多得多。非生物授粉物种的自主种子生产对入侵范围的积极影响要大于生物授粉物种和单果类物种，而不是多果类物种。这些结果支持贝克定律，我们建议用于评估考虑引入的物种入侵性的筛选方案应包括对其繁殖系统的评估。

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