摘要
选取8个高多态性的微卫星位点,对240只刺参(Apostichopus japonicus)幼体和14只疑似亲本进行了亲缘关系的鉴定。通过检测,8个微卫星位点共得到53个等位基因,平均等位基因数为6.63;观察杂合度在0.730—0.902;各位点的多态信息含量为0.696—0.836。通过亲缘关系分析软件CERVUS 3.0分析,微卫星位点累积排除概率分别为0.9934、0.9997、0.99999。基于排除法个体基因型判定,有37个子代有1个候选亲本,194个子代有2个及以上候选亲本;基于似然法判定,置信度为80%时,有198个子代个体找到最似亲本。综合排除法和似然法的亲权鉴定,成功为229个子代个体找到它们的亲本,鉴定成功率达95%以上。本研究结果可为刺参育种工作中亲本识别及家系分析提供技术支持和理论依据。
In the present study, 8 microsatellite loci were adopted for parentage identification of 240 offspring and total 14 parents in artificial breeding group of Apostichopus japonicus. The results showed that all the 8 microsatellite loci had genetic polymorphisms, the total number of alleles was 53, and the mean number of alleles was 6.63. The observed heterozygosity ranged from 0.730 to 0.902, and PIC values were 0.696-0.836. Analyzing by CERVUS 3.0, the calculate exclusion probabilities of microsatellite loci were 0.9934, 0.9997 and 0.99999. Based on Elimination method and judged by the genotypes of parents and offspring, 37 individuals had one parents and 194 individuals had two or more candidate parents. Based on Likelihood method, there were 198 individuals found the most like parents at 80 percent confidence level. Parental Identification on the results of the complementary methods, 229 individuals found their parents with 95% success rate. The results can provide technical support and theoretical basis for parentage identification in the breeding practice of A. japonicus.
出处
《海洋与湖沼》
CAS
CSCD
北大核心
2013年第5期1263-1269,共7页
Oceanologia Et Limnologia Sinica
基金
山东省自然科学基金项目,ZR2011CM036号
山东省现代农业产业技术体系刺参创新团队刺参育种岗位,2012-2014
海洋经济创新发展区域示范项目,20130125号
山东省优秀中青年科学家基金,Y231041011号
关键词
刺参
微卫星
亲权鉴定
Apostichopus japonicus microsatellite parentage testing
