摘要
利用18个微卫星标记,对6个家系的26尾有丝分裂雌核发育牙鲆进行亲子鉴定,PCR扩增产物经8%非变性聚丙烯酰胺凝胶电泳检测,结果表明:1个座位在母本中表现为相同的基因型,视为单态座位,其他17个座位为多态;多态座位在亲子鉴定中的累计排除概率和累计个体识别概率分别为0.9985、0.9999;根据被测个体在17个微卫星座位的基因型,最后确认26尾子代的母本,其中7尾子代在某些座位表现出与其母本不完全匹配的基因型。利用微卫星标记可确定雌核发育后代的亲子关系,从而构建牙鲆雌核发育家系系谱,对牙鲆雌核发育的深入研究具有重要意义。
Eighteen microsatellite markers were analysed with a paternity testing application using 26 mitogynogenetic Japanese flounder （Paralichthys olivaceus） progeny and their six assumed female-parents. The amplified products of PCR were analyzed by 8% polyacrylamide gel electrophoresis. Electrophoresis patterns showed that only one pair of primers had a monomorphic pattern, and the others were polymorphic. Cumulate exclusion probability of polymorphic loci was 0.9985 and cumulate power of discrimination was 0.9999. An effective method was applied to track the gynogenetic maternal parents of 26 progeny. The genotypes of six progeny were not completely identical to their mothers on some loci. The construction of pedigree was perfected by looking at microsatellite loci from paternity tests which are essential to the deeper analysis of gynogenetic Japanese flounder.
基金
国家科技支撑计划(2006BAD01A1207)
跨越计划(2006跨18)
关键词
牙鲆
雌核发育
微卫星标记
亲子鉴定
Japanese flounder （Paralichthys olivaceus）
Gynogenesis
Microsatellite marker
Paternity testing
