RUI: Collaborative Research: Genetic Analyses of Chemical Variation and Resistance to a Diverse Phytophage Community on Willow Hybrids

杂交在植物进化中具有重要意义。 最近的研究表明，杂交植物对 食草动物的抗性可能不同于纯亲本植物对 食草动物 混合可以更多，更少，相等，或 与亲本物种相比具有中等抗性。 确定 如果其中一种模式普遍存在， 了解重要的生态和进化方面， 植物与食草动物的相互作用，以及杂交种在 考虑生物多样性问题。 该项目重点 在杨柳物种和它们的杂交种上， 栖息地 这两个亲本杨柳种有不同的化学成分 可以在杂交种中进行研究， 父母 PI开发了分子遗传标记， 描述自然发生的和杂交的杂种和亲本 物种 PI将分析 杂交、化学变异与草食动物抗性 大田植物、克隆植物和普通花园中的幼苗植物。 他将测试化学表达的差异是否与 与草食动物的杂交抗性，并将使用分子 标记，以确定在几个杂交频率 两种杨柳共存的群落。

Hybridization has been of major importance for plant evolution. Recent research has shown that hybrid plant resistance to herbivores may differ from resistance of pure parental plants to herbivores. Hybrids could be more, less, equally, or intermediately resistant compared to parental species. Determining if one of these patterns is prevalent could contribute to understanding important ecological and evolutionary aspects of plant-herbivore interactions, as well as the role of hybrids in considering issues of biological diversity. This project focuses on willow species and their hybrids that co-occur in the same habitat. The two parent willow species have different chemical systems in their leaves that can be studied in the hybrids and parents. The PI has developed molecular genetic markers to characterize naturally occurring and crossed hybrids and parental species. The PI will analyze the relationships between hybridization, chemical variation and herbivore resistance for field plants, and cloned and seedling plants in a common garden. He will test if differences in chemical expression are correlated with herbivore resistance of hybrids, and will use molecular markers to determine the frequency of hybridization in several communities that have both willow species.