| 疫霉菌群体遗传结构变化机制研究进展 |
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| 引用本文： | 王子迎.疫霉菌群体遗传结构变化机制研究进展[J].安徽教育学院学报,2006,24(6):89-93,108. |
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| 作者姓名： | 王子迎 |
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| 作者单位： | 安徽教育学院,生物系,安徽,合肥,230061 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)
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国家自然科学基金 |
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| 摘 要： | 群体遗传结构是影响群体进化的各种因素相互作用的结果,体现了群体进化的历史,而且在一定程度上还可以反映该群体未来的进化潜能。对于疫霉菌,由于其生物学特性和研究技术的限制,疫霉菌群体遗传结构研究的进展比较缓慢。本综述回顾了近期关于疫霉菌群体遗传结构的相关进展,分析了疫霉菌群体结构变化的机制。重点论述了种群的变异、迁移、遗传漂变及选择等四个方面对种群遗传结构变化的影响,分析了在影响群体遗传结构变化的各种因素的作用下,群体原来的基因型被新的基因型所替换而造成群体结构快速转变的现象及其机制。
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| 关 键 词： | 变异 迁移 遗传漂变 选择 适合度 群体替换 |
| 文章编号： | 1001-5116（2006）06-0089-06 |
| 收稿时间： | 2006-06-20 |
| 修稿时间： | 2006-06-20 |
The Mechanisms of Genetic Variation of Phytophthora Population |
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| WANG Zi-ying.The Mechanisms of Genetic Variation of Phytophthora Population[J].Journal of Anhui Institute of Education,2006,24(6):89-93,108. |
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| Authors: | WANG Zi-ying |
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| Institution: | Department of Biology, Anhui Institute of Education, Hef ei 230061, China |
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| Abstract: | Despite the huge economic costs of Phytophthora sojae diseases,relatively little is known about the population genetics of the causal organisms.Genetic analyses in this genus were hindered until recently by the inability to perform genetic crosses,due to homothallism,poor germination of oospores,lack of suitable markers,or simply,the limited availability of both mating types.The purpose of this paper is to review the literature on the population genetics of Phytophthora species of and to formulate testable hypotheses that can explain many of the observed phenomena.Four main areas will be considered: sources of variation,migration,genetic drift and selection. |
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| Keywords: | variation migration genetic drift selection fitness population replacements |
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