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- W2548272200 abstract "为了研究野生小黄鱼（Pseudosciaena polyactis）繁殖后代的形态性状对体质量的影响作用，以随机采集的729尾4.5月龄小黄鱼为研究对象，对每尾个体的体质量（g）和8个形态性状（cm）：全长（X1）、体长（X2）、头长（X3）、躯干长（X4）、尾部长（X5）、尾柄长（X6）、尾柄高（X7）和体高（X8）进行准确测定，运用相关分析、多元回归分析和通径分析方法，分别计算性状间的相关系数、构建形态性状与体质量的多元回归方程，获得了通径系数和决定系数，进行了养殖小黄鱼的形态性状对体质量的影响研究。结果显示，8个形态性状与体质量的相关系数均达到极显著水平（P ＜0.01）；通径分析中，4个形态性状对体质量的通径系数达到极显著水平（P＜0.01），它们是影响体质量的重要指标，其中体长（通径系数：0.589）对体质量的直接影响最大。应用逐步多元回归分析建立了以体质量为因变量（Y），体长（X2）、躯干长（X4）、尾柄高（X7）和体高（X8）为自变量的回归方程：Y=-32.377 + 3.064X2-1.511X4+14.285X7+4.438X8。模型等式中形态性状与体质量的相关指数R2=0.927，说明所选性状是影响体质量的主要形态性状。以上分析结果为小黄鱼的选育测量指标的确定提供了理论依据。" @default.
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- W2548272200 date "2016-05-25" @default.
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- W2548272200 title "小黄鱼( Pseudosciaena polyactis )形态性状与体质量的相关性及通径分析" @default.
- W2548272200 doi "https://doi.org/10.11693/hyhz20151200294" @default.
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