关联分析是新近开始在植物数量性状研究和植物育种中应用的一种分析方法。它以连锁不平衡为基础鉴定某一群体内性状与遗传标记或候选基因间的关系。本文在介绍连锁不平衡的定义和度量方法的基础上，综述了连锁不平衡和关联分析在植物方面的研究进展，并讨论了交配体系、重组、遗传漂变等对连锁不平衡程度的影响，以及连锁不平衡程度、群体结构对关联分析的影响，最后讨论了关联分析在植物数量性状和分子育种研究中可能的应用。
Recently, association analysis has been widely employed to investigate quantitative traits in plant genetics and breeding. Association analysis is an approach to identify the relationship of molecular markers or candidate genes with traits in a given population based on linkage disequilibrium (LD). Here, we introduced the definition and measurements of LD and reviewed the advances of association analysis for the investigation of quantitative traits in plants. The effects of mating systems, such as recombination, genetic drift, and population structure to the patterns of LD were discussed. Finally, we also discussed the potential application of association analysis for dissecting quantitative traits and plant molecular breeding.
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