不同地理群体菲律宾蛤仔表型性状的相关性与通径分析

doi:10.16378/j.cnki.1003-1111.2020.01.005

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Abstract The shell length (S_L), shell height (S_H), shell width (S_W), live body weight (m_L), wet soft part weight (m_M) and dry soft part weight (m_F) were measured and their correlation coefficients analyzed among Manila clam Ruditapes philippinarum from southern group farming in the north (SN), northern indigenous group (NN) and southern indigenous group (SS) by correlation and path analysis to provide theoretical basis and measurement index for selection and breeding of Manila clam. It was found that the correlation coefficients between each shell morphological trait and m_L or m_M were all very significant in different geographical groups of Manila clam (P<0.01), even though there was no significant difference in morphological indices among different geographical groups of the clam (P＞0.05). The analysis of determinant coefficient showed that the main phenotypic traits affecting W_M were not the same among different geographical groups, with the maximal direct effect of S_W, and the secondary indirect effect of S_W through S_H in SN population; S_L being the main factor through SH in NN population; the main direct effect of SH, and the indirect effect of S_L through S_H in SS population.The independent variables with inconspicuous test of the path coefficient were deleted, and the optimal regression equation of the m_M of the clams was established by using the stepwise regression method: SN group m_M1=-4.276+0.211S_H+0.116S_W; NN group m_M2=-2.806+0.088S_L+0.087S_H; SS group m_M3=-3.101+0.290S_H.

Key words： Ruditapes philippinarum different geographic population correlation analysis path analysis decision coefficient analysis

Received: 26 November 2018

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	LIANG Jian
	WANG Junjie
	GUO Yongjun
	LI Yongren
	YAN Xiwu

Cite this article:

LIANG Jian,WANG Junjie,GUO Yongjun, et al. Correlation and Path Analysis of Phenotypic Traits in Different GeographicalGroups of Manila Clam Ruditapes philippinarum[J]. Fisheries Science, 2020, 39(1): 40-47.

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https://www.shchkx.com/EN/10.16378/j.cnki.1003-1111.2020.01.005 OR https://www.shchkx.com/EN/Y2020/V39/I1/40

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