文献类型：期刊文献

中文题名：黑荆树种源和家系的遗传变异与早期选择

英文题名：Genetic Variation and Early Selection of Provenances and Families of Acacia mearnsii

作者：任华东[1] 姚小华[1] 康文玲[2] 李生[1] 王开良[1] 段福文[2]

第一作者：任华东

机构：[1]中国林业科学研究院亚热带林业研究所;[2]云南楚雄林业科学研究所

年份：2010

卷号：46

期号：3

起止页码：153-160

中文期刊名：林业科学

外文期刊名：Scientia Silvae Sinicae

收录：CSTPCD;;Scopus;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：中澳国际合作项目"黑荆树栽培及纸浆研究"(ACIAR-8849);国家林业局重点推广项目"黑荆树优良种源及水土保持林营造技术推广"[(2001-天保)09号]

语种：中文

中文关键词：黑荆树;种源;家系;生长性状;遗传变异;早期选择

外文关键词：Black Wattle（Acacia mearnsii）; provenance; family; growth traits; genetic variations; early selection

分类号：S718.46;S722.33

摘要：黑荆树（Acacia mearnsii）是原产澳大利亚的优良速生多用途树种。20世纪50年代作为优良的栲胶原料引入我国（贺近格等,1991）,在我国南方广泛栽培,成为重要的栲胶原料资源,
Black Wattle （Acacia mearnsii） is an important species in Australia for short rotation,with many uses. The species has been widely planted and utilized in southern China at present. This study was carried out in an open-pollinated 15-year-old provenance /progeny trial in Lufeng County,Yunnan Province. Total 158 open-pollinated progenies derived from 19 provenances in Australia and 8 open-pollinated progenies from China were tested in the trial. The phenotypic and genetic variations in growht traits of provenances /progenies were analyzed. The analysis results showed that height,DBH, bark thickness at breast height and the volume of individual tree were significantly different at 3,5,9 and 15-year-old trees among the provenances and progenies,which suggested that there was great potential either for provenance selection or family selection,and the variation was the major sources for the species improvement. Heritability and genetic correlation for growth traits were estimated for the open-pollinated families of A. mearnsii. The growth traits （ height, DBH,bark thickness at breast height） of family heritability were over 0. 7 and individual heritability was over 0. 5,which meant these traits were strongly controlled by genetics. There were high phenotypic and genetic correlations for height, DBH and bark thickness at breast height between 3,5,9-year-old and 15-year-old progenies. The genetic correlation coefficients of 5 and 15 years old trees were over 0. 8,which indicated that these relationships were mainly controlled by genetic factors. The stage from 5 to 9 years old was the best period for early selection in the open-pollinated provenance / progeny test of A. mearnsii,and the DBH was a better indicator than other traits due to its genetic stability.