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首页> 外文期刊>African Journal of Biotechnology >Estimates of combining ability and heterosis for growth traits in a full diallel cross of three strains of common carp, Cyprinus carpio L.
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Estimates of combining ability and heterosis for growth traits in a full diallel cross of three strains of common carp, Cyprinus carpio L.

机译：三种鲤鱼品系鲤的全二代杂交中生长性状的结合能力和杂种优势的估计。

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摘要

We attempted to determine the combining ability and heterosis of body weight by performing 3 × 3 complete diallel crosses derived by crossing 3 common carps (Cyprinus carpio var. jian, Cyprinus carpio haematopterus Temminck et Schlegel and Cyprinus carpio haematopterus). In total, 1650 fish were tagged when they were 1.5 months of age. After 5 months, Jian carp (♂) × Huanghe carp (♀) attained greater weight than pure and other hybrids. By crossing with Jian, Huanghe and Heilongjiang carps have improved body weight compared to their purebred. Significant PCs (principal components) were generated from growth performance data and their statistical loadings. The first principal component had the highest Eigen value of 2.81 and accounted for 70.31% of the variability in the data set. Two crosses, Jian carp (♂) × Huanghe carp (♀) and Huanghe carp (♂) × Jian carp (♀) showed high SCA with regard to body weight. Both Heilongjiang carp (♂) × Jian carp (♀) and Heilongjiang carp (♂) × Huanghe carp (♀) had higher heterosis compared to their purebreds. Significant positive phenotypic correlations were also observed between body weight and body length, thickness and height. The aforementioned results listed were identified as the foundation for common carp selective breeding programs.
机译：我们试图通过执行3×3个完整的二叉杂交来确定结合能力和体重的杂种优势，这些杂交是通过杂交3个普通鲤鱼（Cyprinus carpio var。jian，Cyprinus carpio haematopterus Temminck et Schlegel和Cyprinus carpio haematopterus）而得到的。当它们在1.5个月大时，总共标记了1650条鱼。 5个月后，健鲤（Huang）×黄河鲤（♀）的体重比纯杂种和其他杂种重。与纯种相比，通过与剑鱼杂交，黄河和黑龙江鲤鱼的体重有所改善。从生长性能数据及其统计负荷中生成了重要的PC（主要组件）。第一个主成分的特征值最高，为2.81，占数据集变异性的70.31％。剑鱼（♂）×黄河鲤（♀）和黄河鲤（♂）×剑鲤（♀）这两个杂种显示出相对于体重的较高SCA。与纯种相比，黑龙江鲤（♂）×建鲤（♀）和黑龙江鲤（♂）×黄河鲤（♀）的杂种优势更高。在体重与体长，厚度和身高之间也观察到显着的正表型相关性。列出的上述结果被确定为鲤鱼选择性育种计划的基础。

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