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首页> 外文期刊>International journal of plant sciences >VARIATION IN PHENOTYPIC PLASTICITY AMONG NATIVE AND INVASIVE POPULATIONS OF ALLIARIA PETIOLATA
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VARIATION IN PHENOTYPIC PLASTICITY AMONG NATIVE AND INVASIVE POPULATIONS OF ALLIARIA PETIOLATA

机译：小花小苍兰原生种群和入侵种群表型可塑性的变化

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摘要

Alliaria petiolata is a Eurasian biennial herb that is invasive in North America and for which phenotypic plasticity has been noted as a potentially important invasive trait. Using four European and four North American populations, we explored variation among populations in the response of a suite of antioxidant, antiherbivore, and morphological traits to the availability of water and nutrients and to jasmonic acid treatment. Multivariate analyses revealed substantial variation among populations in mean levels of these traits and in the response of this suite of traits to environmental variation, especially water availability. Univariate analyses revealed variation in plasticity among populations in the expression of all of the traits measured to at least one of these environmental factors, with the exception of leaf length. There was no evidence for continentally distinct plasticity patterns, but there was ample evidence for variation in phenotypic plasticity among the populations within continents. This implies that A. petiolata has the potential to evolve distinct phenotypic plasticity patterns within populations but that invasive populations are no more plastic than native populations.
机译：蒜香蒜（Alliaria petiolata）是一种在北美具有入侵性的欧亚两年生草本植物，表型可塑性被认为是潜在的重要入侵性状。我们使用了四个欧洲和四个北美种群，探索了种群之间的差异，其中包括抗氧化剂，抗草食动物和形态特征对水和养分的可用性以及茉莉酸处理的响应。多变量分析显示，这些性状的平均水平以及这一系列性状对环境变化（尤其是水的利用）的响应在人群之间存在很大差异。单变量分析显示，根据至少一种环境因素测得的所有性状的表达在种群之间的可塑性差异，但叶长除外。没有证据表明大陆上具有明显的可塑性模式，但是有足够的证据表明各大陆种群之间的表型可塑性存在差异。这表明，A。petiolata有潜力在种群内发展出独特的表型可塑性模式，但侵入性种群的可塑性并不比原生种群高。

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