杉木无性系生长和材性变异及多性状指数选择

doi:10.11707/j.1001-7488.20120308

Scientia Silvae Sinicae ›› 2012, Vol. 48 ›› Issue (3): 45-50.doi: 10.11707/j.1001-7488.20120308

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Clonal Variation in Growth and Wood Quality and the Multi-Trait Index Selection of Chinese Fir

Wang Runhui¹, Hu Dehuo¹, Zheng Huiquan¹, Wei Ruping¹, Huang Yuemao², Cai Weijiu²

1. Guangdong Academy of Forestry Guangzhou 510520;2. Dakengshan State-Owned Forest Farm in Zhaoqing of Guangdong Province Zhaoqing 526400

Received:2011-08-15 Revised:2011-12-12 Online:2012-03-25 Published:2012-03-25

Abstract

Abstract:

Two clonal trial stands of Chinese Fir (Cunninghamia lanceolata) were used in this study, one was 19-year-old stand which included 38 clones, and the other was 17-year-old stand including 102 clones. The statistical analyses showed that there were very significant genetic variations in height, DBH, volume and ratio of heartwood (R_hw), wood basic density (ρ_b) of the clones in the two stands. The repeatability of clones was in median to high level, and the genetic CV was different over the all five traits. There were very significant phenotypic and genetic correlations among height, DBH and volume, and negative correlations among growth, R_hw and ρ_b. The selection method experiment indicated that index selection could improve volume, R_hw and ρ_b, showing synthetically superior selection effects compared to any individual trait selection methods.

Key words: Chinese Fir(Cunninghamia lanceolata), clone, wood quality, multi-trait index selection

CLC Number:

S722.3⁺3

Wang Runhui;Hu Dehuo;Zheng Huiquan;Wei Ruping;Huang Yuemao;Cai Weijiu. Clonal Variation in Growth and Wood Quality and the Multi-Trait Index Selection of Chinese Fir[J]. Scientia Silvae Sinicae, 2012, 48(3): 45-50.

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Clonal Variation in Growth and Wood Quality and the Multi-Trait Index Selection of Chinese Fir

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