Correlation and Path Analysis of Quantitative traits of Haliotis discus hannai Ino

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Journal of Agriculture ›› 2014, Vol. 4 ›› Issue (12) : 82-86. DOI: 10.11923/j.issn.2095-4050.2014-xb0234

Correlation and Path Analysis of Quantitative traits of Haliotis discus hannai Ino

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Abstract

In order to research the correlations among quantitative traits and the correlations between different traits and body weight, soft part weight, 161 three to four-year oldHaliotis discus hannai Ino were collected. The quantitative traits of shell length (SL), shell width (Sw), shell height (SH), foot weight (FW), soft part weight (MW) and body weight (BW) were measured. After calculating the correlation coefficients, effects of different traits to soft part weight and body weight were analyzed by determination coefficient analysis and path coefficient analysis. The results showed that the correlation coefficients between every two traits reached significant differences (P <0.01); soft part weight was main influence factors on the body weight among the six quantitative traits (shell length, shell width, shell height, shell weight, foot weight and soft part weight); In body measurement traits (shell length, shell width, shell height), shell length weighted most with the body weight; Body weight had determinacy and predominant direct effect on soft part weight among the body measurement traits and body weight. Three multiple regression equations were established, excluding insignificant variablesand using the method of stepwise regression. Six quantitative traits against body weight: BWp= - 10.343 0.255SL 0.696SW 0.951MW; Body measurement traits against body weight: BWb= - 69.930 1.427SL 0.728SH; Body measurement traits and body weight against soft part weight: MB=4.430 0.798BW-0.174Sw.The results provided theoretical bases for protecting germplasm resources and selective breeding in Haliotis discus hannai Ino.

Key words

Haliotis discus hannai Ino; Quantitative Trait; Multiple Regression; Path Analysis

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Correlation and Path Analysis of Quantitative traits of Haliotis discus hannai Ino. Journal of Agriculture. 2014, 4(12): 82-86 https://doi.org/10.11923/j.issn.2095-4050.2014-xb0234

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