Research on Apply ing the Pilodyn inWood PropertyBreeding of L a rix kaem pfe ri

WANG Jun-hui; ZHANG Shou-gong; ZHANG Jian-guo; SUN XiaoOmei; ZHU Jing-le; LIANG Bao-song; QI Wan-yi

This paper studied the genetic diversity of wood p roperty among 9 families of the living tree of Larixkaem pferi with the indexesmeasured by Pilodyn, a nond estructive tester. The basic density (Dn ) and the outer wood basic density(Do) of the increment core of the wood were also measured in laboratory. Through the analysis ofwood basic density and Pilodyn value, the result showed that the family 34 were the biggest and that of family 32were the smallest in the 9 families of Larix kaem pferi for Pilodyn value ( Pn) , the outer density (Do) and the woodbasic density(Db) . The order of the 9 familieswas similar by Pn ascending sort, Do and Db descending sort. Theresult of the ANOVA analysis also showed that there was the remarkable difference in Pn , Do and Db among the families ( P = 0. 0003—0. 002 8 ). According to the phenotyp ic correlation and genetic correlation analysis of thethree wood p roperties, Pilodyn value ( Pn ) were remarkable negative correlation with outer density (Do )( - 0. 691 8, - 0. 814 2) , Pilodyn value ( Pn) were extremely significantly negative correlation with basic wooddensity(Db) ( - 0. 670 6, - 0. 909 3). The family and individual heritabilities of the Pilodyn value ( Pn) were0. 45 and 0. 28, and the family and individual heritability of outer basic density (Do) were 0. 46 and 0. 33, and thefamily and individual heritabilities of basic wood density (Db) were 0. 43 and 0. 26. Therefore, it was reliable touse Japanese larch Pilodyn value ( Pn ) to rep lace the outer density (Do) and the basic wood density (Db) toestimate the wood density genetic parameters.

1. Research Institute of Forestry, Key Laboratory of Tree Breeding and Cultivation, State Forestry Administration, CAF,Beijing　100091, China

2. Forest and Horticulture College of Hepnan Agriculture University, Zhengzhou　450002, He’nan, China

3. Forest and Horticulture College of Hepnan Agriculture University, Zhengzhou　450002, He’nan, China

Received Date: 2007-11-26

Abstract: This paper studied the genetic diversity of wood p roperty among 9 families of the living tree of Larixkaem pferi with the indexesmeasured by Pilodyn, a nond estructive tester. The basic density (Dn ) and the outer wood basic density(Do) of the increment core of the wood were also measured in laboratory. Through the analysis ofwood basic density and Pilodyn value, the result showed that the family 34 were the biggest and that of family 32were the smallest in the 9 families of Larix kaem pferi for Pilodyn value ( Pn) , the outer density (Do) and the woodbasic density(Db) . The order of the 9 familieswas similar by Pn ascending sort, Do and Db descending sort. Theresult of the ANOVA analysis also showed that there was the remarkable difference in Pn , Do and Db among the families ( P = 0. 0003—0. 002 8 ). According to the phenotyp ic correlation and genetic correlation analysis of thethree wood p roperties, Pilodyn value ( Pn ) were remarkable negative correlation with outer density (Do )( - 0. 691 8, - 0. 814 2) , Pilodyn value ( Pn) were extremely significantly negative correlation with basic wooddensity(Db) ( - 0. 670 6, - 0. 909 3). The family and individual heritabilities of the Pilodyn value ( Pn) were0. 45 and 0. 28, and the family and individual heritability of outer basic density (Do) were 0. 46 and 0. 33, and thefamily and individual heritabilities of basic wood density (Db) were 0. 43 and 0. 26. Therefore, it was reliable touse Japanese larch Pilodyn value ( Pn ) to rep lace the outer density (Do) and the basic wood density (Db) toestimate the wood density genetic parameters.

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Reference (12)

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Research on Apply ing the Pilodyn inWood PropertyBreeding of L a rix kaem pfe ri

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