|Table of Contents|

Path and Regression Analysis of the Phenotypic Characters of Solen Grandis(PDF)

《南京师大学报(自然科学版)》[ISSN:1001-4616/CN:32-1239/N]

Issue:
2012年02期
Page:
97-102
Research Field:
生命科学
Publishing date:

Info

Title:
Path and Regression Analysis of the Phenotypic Characters of Solen Grandis
Author(s):
Wu YangpingChen AihuaYao GuoxingZhang Zhiwei
Jiangsu Institute of Marine Fisheries,Nantong 226007,China
Keywords:
Solen grandisphenotypic characterscorrelation analysispath analysismultiple regression equation
PACS:
S917.4
DOI:
-
Abstract:
To evaluate the effects of phenotypic characters on the body weight in Solen grandis,9 phenotypic characters and body weight were measured in 63 randomly sampled S. grandis individuals. With this dataset the correlation and path analysis were conducted. The results showed that the body weight was significantly or positively correlated with the selected phenotypic traits ( in all cases P < 0. 01) . Shell length showed the most direct but the least indirect effects on the body weight. The direct effect of shell length or shell width were more significant than their respective indirect effect. The indirect effect of any other phenotypic trait on the body weight,mostly through shell length and shell width,was larger than direct one. The determination coefficient reveals that Σd = 0. 933 > 0. 850,showing that these traits were critical in the explanation of body weight. Shell length had the largest determination coefficient on the live body weight ( di = 0. 827 1) ,while shell length and shell width had the largest determination coefficient ( dij = 0. 580 9) in terms of codetermining coefficient. We established a multiple regression equation Y = - 56. 969 + 0. 282X1 + 2. 601X2 + 0. 997 X6 - 0. 191X9 . This work suggested in selective breeding and parents selecting of S. grandis,the shell length and width were most important indicative traits.

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Last Update: 2013-03-11