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首页> 外文期刊>Plant Pathology >Modern approaches to species concepts in downy mildews.
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Modern approaches to species concepts in downy mildews.

机译：霜霉病中物种概念的现代方法。

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摘要

Existing approaches to species concepts in the downy mildew group (morphometric, Gaumann's biological species and Skalicy's eco-physio-phentic concepts) were investigated. It was concluded that they were inadequate and possibly misleading and that their systematic treatment should benefit from the application of modern methods of systematic analysis. The contribution and potential of ultrastructure, karyotyping, sterol and fatty acid composition, isoenzyme patterns, molecular biology, numerical methods, immunoassay and hypotheses of coevolution to the development of species concepts are reviewed. It is concluded that modern methods can suggest phylogenetic relationships on the basis of statistical probabilities and may also detect microevolutionary change, but more information is required about individual breeding systems, gene flow, ecology, phylogeny and distribution before informed decisions about the delimitation of most species can be made. Until patterns of genetic diversity are established, a modified phylogenetic species concept may offer an interim solution to the problem of species definition in the downy mildews.
机译：研究了霜霉病群中现有的物种概念方法（形态计量学，高曼的生物物种和Skalicy的生态-生理-酚类概念）。得出的结论是，它们不够用，可能会引起误解，其系统处理应受益于现代系统分析方法的应用。综述了超微结构，核型，固醇和脂肪酸组成，同工酶模式，分子生物学，数值方法，免疫测定和协同进化假设对物种概念发展的贡献和潜力。结论是，现代方法可以根据统计概率建议系统发育关系，也可以检测微进化变化，但是在做出有关大多数物种划界的明智决定之前，需要有关个体育种系统，基因流，生态学，系统发育和分布的更多信息可以制造。在建立遗传多样性模式之前，改良的系统发育物种概念可能会为霜霉病物种定义问题提供临时解决方案。

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