【摘要】 根据查阅的近二十年来发表的有关６０余篇文献，对中国淡水鱼类染色体形态及数目变异的研究进行了总结。综述了染色体数目、染色体核型与分类、性染色体、染色体多倍性及杂交性等方面的研究现状，并论述了染色体形态及数目变异在鱼类分类、杂交育种等方面的应用前景。更多还原

【Abstract】 According to more than 60 articles concerned that had been published in the pasttwenty years, this article summarizes the research of chromosome pattern and numerical variationof freshwater fish in China.It deals with the amount of chromosomes,chromosome nucleotypes and classification, sex chromosome,chromosome polyploidy and hybridity, and other concerned research situation.This article also discusses the applied prospects of chromosome patternand numerical variation in fish classification, crossbreeding, etc.更多还原