CAJ | 학술논문

　　经济性状是对虾遗传育种的重要指标,形态参数对于经济性状的贡献率是选育参数的重要依据。为了研究斑节对虾(Penaeus monodon)表型性状间的相关性及影响体质量的因素组成,随机选取1339尾6月龄对虾,对其形态性状(体长、头胸甲长、头胸甲高、头胸甲宽)和体质量性状5个数量性状进行测量,并应用相关分析、多元回归、通径分析、决定系数等方法讨论了形态性状对体质量性状的影响。结果表明,所测各形态性状间的相关性均达到极显著水平(P<0.01)；其中体长(P=0.563)对体质量的直接影响较大,是影响体质量的主要因素。决定系数分析结果与通径分析结果一致,各表型性状对体质量的总决定系数Σd=0.925,表明所选性状是影响体质量的主要性状。通过逐步回归分析方法,经偏回归系数显著性检验,建立了体质量为因变量,体长、头胸甲长、头胸甲高和头胸甲宽为自变量的多元回归回归方程：Y=–22.489+0.22X1+0.191X2+0.339X3+0.296X4,为斑节对虾选育提供了理论依据。
　　경제성상시대하유전육충적중요지표,형태삼수대우경제성상적공헌솔시선육삼수적중요의거。위료연구반절대하(Penaeus monodon)표형성상간적상관성급영향체질량적인소조성,수궤선취1339미6월령대하,대기형태성상(체장、두흉갑장、두흉갑고、두흉갑관)화체질량성상5개수량성상진행측량,병응용상관분석、다원회귀、통경분석、결정계수등방법토론료형태성상대체질량성상적영향。결과표명,소측각형태성상간적상관성균체도겁현저수평(P<0.01)；기중체장(P=0.563)대체질량적직접영향교대,시영향체질량적주요인소。결정계수분석결과여통경분석결과일치,각표형성상대체질량적총결정계수Σd=0.925,표명소선성상시영향체질량적주요성상。통과축보회귀분석방법,경편회귀계수현저성검험,건립료체질량위인변량,체장、두흉갑장、두흉갑고화두흉갑관위자변량적다원회귀회귀방정：Y=–22.489+0.22X1+0.191X2+0.339X3+0.296X4,위반절대하선육제공료이론의거。
In order to study the correlation between phenotypic traits and body weight, five quantitative traits in-cluding four morphological traits (body length, carapace length, carapace width, and carapace height) and body weight of 6-month-old Penaeus monodon were measured and analyzed from 1339 randomly collected individuals by correlation analysis, multiple regression analysis, path analysis and determination coefficient analysis. The re-sults showed that there were significant correlations (P <0.01) among the five measured traits. The body length (P=0.563) was the key effective factor, bearing predominant, direct effect and determinacy on the body weight. The trend of determination coefficient analysis was similar to that of path analysis. High total determination coefficient (Σd=0.925) between phenotypic features and body weight indicated that the selected traits were practically useful. The multiple regression equation for estimation of body weight was Y = –22.489+ 0.22X1 + 0.191X2 + 0.339X3 +0.296X4.