中文摘要：

渐渗杂交（Introgressivehybridization）一词最早是由Anderson和Hubricht在1938年通过植物杂交研究提出，指两物种的杂交后代与亲本之一或双亲反复回交，把某一亲本的性状带至另一亲本。本文阐述了渐渗杂交的定义发展，各物种渐渗杂交的研究进展以及相关研究方法的发展。相关研究文献主要讨论了这样一些问题：渐渗杂交形成机制的探讨；基因渗透程度；在进化上的重要意义；对生物多样性的影响以及对物种保护上的贡献；作物育种上的应用等。最后从进化、生物多样性、作物育种等角度讨论了渐渗杂交的理论实践意义，提出了一些关于渐渗杂交有待于进一步深入研究的建议。

英文摘要：

Introgressive hybridization （IH） was first described by Anderson ＆ Hubricht in a study of hybridization of plants in 1938, which showed that the gene flow from one species＇ gene pool to another through repeated backcrossing of the hybrids to one or both parents. In related literatures, the mechanism, the significance in evolution, its effect on biodiversi- ty, application in breeding of introgressive hybridization etc. were often debated. In the paper, the definition, the study status, methods are introduced. Besides, the practical of introgressive hybridization in evolution, biodiversity, breeding are discussed. At last, some advices on study of introgressive hybridization are put forward.