华贵栉孔扇贝数量性状的相关性及通径分析

为查明华贵栉孔扇贝（Chlamys nobilis）数量性状间的相关性，随机选取526只扇贝，对其形态性状（壳高、壳长、绞合线长和壳厚）和质量性状（总质量、贝柱鲜质量、鲜肉质量、干肉质量和贝柱干质量）进行测量，采用多元回归与通径分析方法研究了5个易测数量性状（壳高、壳长、绞合线长、壳厚和总质量）对鲜肉质量、贝柱鲜质量和贝柱干质量的影响。结果表明，总质量与鲜肉质量、贝柱鲜质量和叭柱干质量呈极显著的正相关（P〈0．01）。多元回归与通径分析显示，这5个易测数量性状指标中，总质量对3个经济性状的正面影响非常大，其他指标的影响较小甚至不明显。

Correlation and path analysis of major quantitative traits of Chlamys nobilis in Sanya

In order to investigate the correlation of growth parameters of scallop （ Chlamys nobilis）, we measured the morphological traits shell height （SH）, shell length （SL）, hinge length （HI,）, shell thickness （ST）] and weight traits total weight （TW）, wet weight of adductor muscle （WWAM）, flesh weight （FW）, dry flesh weight （DFW）, dry weight of adductor muscle （DWAM） ] of 526 scallops. Based on multiple regression and path analysis, the effects of 5 parameters SH （x1）, SL （x2 ）, HL （x3 ）, ST （ x4 ）, TW （x5 ） ] on FW, WWAM and DWAM were analyzed. Results show that TW is very significantly positively correlated with DFW, WWAM and DWAM （ P 〈0. 01 ）. Multiple regression and path analysis indicate that among the 5 parameters, TW has significant positive effect on the 3 economic traits while the other parameters have insignificant or even no effect.