关键词: 黄河鲤, 微卫星标记, 经济性状, 遗传潜力

Abstract: In this paper, genetic potential and the correlation between markers and economic traits (such as body weight, total length, body length) were analyzed in selective population of Huanghe carp (Cyprinus c arpio haematopterus) using 21 microsatellite markers. The number of effective alleles, observed heterozygosity, expected heterozygosity and polymorphic information content were determined, and the Hardy-Weinberg equilibrium was checked by X2 Test. A total of 122 alleles were identified on 21 microsatellite loci with polymorphism from 56 samples. The average number of alleles was 5.8095 and the average number of effective alleles was 3.3706, and the average observed heterozygosity and expected heterozygosity was 0.5893 and 0.6578 respectively. The average polymorphic information content was found to be up to 0.6108. The findings showed that there was a high genetic diversity among the selective population, with Hardy-Weinberg equilibrium. Eight markers were observed that had significant impact (P〈0.05) on 11 economic traits including body weight, total length, body length, and body depth. CAFS2203 was found to be related with body width, head width and caudal peduncle length significantly, CAFS1603 with snout length and CAFS1639 with peduncle depth (P〈0.01). The findings would be valuable for marker-assisted breeding and selective breeding.

Key words: Huanghe carp, microsatellite marker, economic trait, genetic potential