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关于贝类遗传改良几个问题的讨论
  • 期刊名称:水产学报, 2006, 30(1): 130-137
  • 时间:0
  • 分类:S513[农业科学—作物学] S513.035.1[农业科学—作物学]
  • 作者机构:[1]Institute of Oceanology, Chmese Academy of Sctences, Qtngdao 266071, China, [2]Fisheries College, Guangdong Ocean University, Zhanjiang 524025, China
  • 相关基金:Supported by the National High Technology Research and Development Program of China (863 Program) (No.2006AA10A407) and the National Natural Science Foundation of China (No.30371117) We thank the staff of Jinyin Hatchery for their technical assistance during experiment and the anonymous reviewers for critical comments on the manuscript.
  • 相关项目:红壳色突变型皱纹盘鲍的表型遗传、分子标记和基因表达谱
作者: 张国范, 刘晓
中文摘要:

我们在和平的鲍鱼 Haliotis 铁饼 hannai Ino 的三张地理上孤立的人口之中进行了一个完全的 diallel 十字在争论阶段决定杂种优势和生长特点的联合能力。三张人口在日本在中国,和 Miyagi (M) 从 Qingdao (Q) 和 Dalian (D) 被收集。我们测量了壳长度,壳宽度,和全部的重量。联合能力(GCA ) 变化的将军的大小比特定的联合能力(SCA ) 更显著变化,它被两个证实在全部的变化和 GCA/SCA 的基因部件的比率珍视。GCA 和 SCA 的部件变化为所有三个特点是重要的(P < 0.05 ) ,显示添加剂和非添加剂的重要性在决定这些特点的表示的基因效果。相互的母亲的效果(RE ) 为这些特点也是重要的(P < 0.05 ) 。我们的结果建议人口 D 是在引起节目改进生长特点的最好的一般 combiner。DM 十字为所有三个特点有最高的杂种优势价值。

英文摘要:

We conducted a complete diallel cross among three geographically isolated populations of Pacific abalone Haliotis discus hannai Ino to determine the heterosis and the combining ability of growth traits at the spat stage. The three populations were collected from Qingdao (Q) and Dalian (D) in China, and Miyagi (M) in Japan. We measured the shell length, shell width, and total weight. The magnitude of the general combining ability (GCA) variance was more pronounced than the specific combining ability (SCA) variance, which is evidenced by both the ratio of the genetic component in total variation and the GCA/SCA values. The component variances of GCA and SCA were significant for all three traits (P〈0.05), indicating the importance of additive and non-additive genetic effects in determining the expression of these traits. The reciprocal maternal effects (RE) were also significant for these traits (P〈0.05). Our results suggest that population D was the best general combiner in breeding programs to improve growth traits. The DM cross had the highest heterosis values for all three traits.

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