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运用SRAP技术对哲罗鲑、细鳞鲑及杂交种(哲罗鲑♀×细鳞鲑♂)的遗传结构进行分析。结果表明:(1)哲罗鲑群体和细鳞鲑群体迁移率相同的位点分别占所扩增条带的48.29%和48.53%,表明二者在遗传结构上具有较大的相似性。杂交群体所扩增的位点中,具有哲罗鲑群体特异位点为30.30%,具有细鳞鲑群体特异位点为25.54%,具有2群体共有位点为39.39%,属两性融合生殖。(2)3个群体多样性水平从高到低排列为细鳞鲑、杂交种、哲罗鲑,并且杂交种表达出一定的杂种优势;(3)检测到种间特异位点53个,将这些特异位点部分组合,可以有效进行杂种鉴定;(4)杂交种与哲罗鲑和细鳞鲑的遗传距离分别为0.255 3和0.385 8,表明杂交种与两亲本群体的遗传差异是不对等的,偏向母本一方。
SRAP was used to analyze the genetic structure of Merrelliths, Sagittarius and hybrids (Zheluo salmon × Bullats salmon♂). The results showed that: (1) The loci with the same mobility among the phyla and Salmonella populations accounted for 48.29% and 48.53% of the amplified bands, respectively, indicating that they had a large similarity in genetic structure. Among the loci amplified by the hybrid population, there were 30.30% of the population of Zhe Luo salmon, 25.54% of the locus with the population of Siraitia lambs, and 39.39% of the common locus of the two populations. (2) The diversity of the three groups ranked from high to low as the simian salmon, hybrid and philosopher’s salmon, and the hybrids expressed certain heterosis. (3) 53 species-specific loci were detected, (4) The genetic distances between the hybrids and Merrellous and Shellfish were 0.255 3 and 0.385 8, respectively, indicating that the genetic differences between the hybrid and the amphipathic population were not equal Of, biased toward one side of the mother.