摘要
从４０个引物中筛选了２７个引物，对兴国红鲤、德国镜鲤和苏联镜鲤进行随机扩增多态ＤＮＡ分析，共得到１９９条带，其中１５５条带（占７７９％）具多态性。计算得出这３个群体内的相似系数分别为：兴国红鲤０．７２２，德国镜鲤０．８２７，苏联镜鲤０．７８７，表明群体内的遗传变异较大；群体间的遗传距离为：兴国红鲤与德国镜鲤０．０９２，兴国红鲤与苏联镜鲤０．１０５，德国镜鲤与苏联镜鲤０．０７７，表明群体间的亲缘关系相近。兴国红鲤与苏联镜鲤遗传距离最大，推断这２个品种间的杂种优势较强，与育种实践一致。
One hundred and ninety-nine RAPD fragments from Xingguo red carp,German mirror carp and Russian mirror carp,among which 155(77.9%)were ploymorphic,were generated using 27 primers screened from 40 primers.Their within-population similarity indices are 0.722 Xingguo red carp,0.787 Ruassia mirror carp,0.827 Germany mirrorcarp,indicating the rather great genetic variations within the 3 populations.The genetic distance between Xingguo red carp and Russia mirror carp is the largest (0.105).It is presumed that the heterosis between Xingguo red carp and Russia mirror carp is the highest.
出处
《中国水产科学》
CAS
CSCD
1999年第1期37-40,共4页
Journal of Fishery Sciences of China
基金
国家自然科学基金
农业部科学基金
