期刊
ANNALS OF FOREST SCIENCE
卷 66, 期 7, 页码 -出版社
SPRINGER FRANCE
DOI: 10.1051/forest/2009064
关键词
cellulose content; Eucalyptus urophylla; genetic correlation; heritability; pulp yield
类别
资金
- AusAID [RAS/91/004]
- Swedish International Development Agency
The aim of this study was to investigate the effectiveness of using cellulose content, measured by the diglyme-HCl method, as a selection trait in breeding programs for kraft pulp yield in Eucalyptus urophylla. A total of 275 trees from sixty-two families were sampled from a thinned progeny trial of E. urophylla in northern Vietnam to evaluate cellulose content from breast-height increment cores. Among those, twenty unrelated trees were felled to evaluate cellulose content and pulp yield from breast-height disk samples. The regression of pulp yield of disk samples on cellulose content was strong either from disks (R-2 = 0.83) or increment cores (R-2 = 0.69). There was no significant difference in cellulose content between the provenances. The narrow-sense within-provenance heritability of cellulose content was 0.50 and the coefficient of additive genetic variation was 3.9%. Genetic correlations between cellulose content and growth (0.28-0.45) or wood basic density (-0.02) were not significantly different from zero. Breast-height increment core cellulose content measured by diglyme-HCl method is under strong genetic control and can be used to rank trees for pulp yield in E. urophylla plantations. Selection for increased cellulose content would have only minor effects on growth and wood basic density.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据