鲫(♀)×禾花鱼(♂)杂交及杂交F1、亲本的形态特征研究

本实验对鲫(Carassius auratus,♀)×禾花鱼(Procypris merus,♂)的杂交进行了研究,并比较分析杂交子一代(F1代)及其亲本的形态特征.结果显示:杂交获得杂种F1的受精率为92.5%、孵化率为89.3%,成活率82.9%.6月龄F1代7项测定的可数性状均偏向母本;可量性状中F1有5项偏向母...

Morphology studied between F1 hybrid (Carassius auratus ♀× Procypris merus ♂)and the original brood stocks

In order to select new carp species which were suitable for freshwater fish farming in China,hybridization between Carassius auratus(♀) and Procypris merus(♂) by artificial method was studied,and the morphological characteristics between the F1 hybrid and the original brood stocks were investigated.The result showed that the fertilization was 92.5%,the rates of hatching was 89.3%,and the survival rate of F1 hybrid was 82.9%.Morphology analyzed indicated that there were 7 meristic characters of F1 hybrid(hybrid of Carassius auratus♀×Procypris merus♂) which were 6 month old were biased to mother,and 5 metric characters were biased to mother,2 metric characters were biased to father,1 metric characters were beyond parents.Furthermore,the cluster analysis of meristic characters and metric characters showed that all of characters were closed to mother.Discriminant analysis indicated that the identification accuracy was ranked as C.auratus(83.3%),P.merus(100%),F1 hybrid(70%),respectively.The results concluded that the morphological traits in F1 hybrids were more traced through the female ancestor,the inheritance from C.auratus to hybrids was stronger than that from P.merus.