邓恩桉家系生长性状遗传分析  

Superior Family Selection of Eucalyptus dunnii

作　　者：卢陆峰 蒙素讯 蒙玉鸠 唐庆兰[1] 郭东强[1] LU Lufeng;MENG Suxun;MENG Yujiu;TANG Qinglan;GUO Dongqiang(Guangxi Forestry Research Institute,Key Laboratory of Central South Fast-growing Timber Cultivation of Forestry Ministry of China,Guangxi Key Laboratory of Superior Timber Trees Resource Cultivation,Nanning Guangxi,Nanning 530002,Guangxi,China;Guangxi Huanjiang Forest Farm,Huanjiang 547100,Guangxi,China;Wuzhou Forest Investigation and Design Company Huanjiang Branch,Huanjiang 547100,Guangxi,China)

机构地区：[1]广西壮族自治区林业科学研究院/中南速生材繁育国家林业和草原局重点实验室/广西优良用材林资源培育重点实验室,广西南宁530002 [2]广西环江毛南族自治县华山林场,广西环江547100 [3]梧州市中森林业勘察设计有限公司环江分公司,广西环江547100

出　　处：《桉树科技》2022年第4期23-27,共5页Eucalypt Science & Technology

基　　金：广西林业科技项目(桂科林字〔2016〕第16号);中央财政林业科技推广示范项目(〔2021〕TG16号)。

摘　　要：以广西环江县9年生邓恩桉46个家系试验林为研究对象,基于不同家系间的生长性状与干形差异进行分析与评价。结果表明:试验林平均胸径为18.9 cm,平均树高为20.5 m,平均单株材积为0.2952 m^(3)。各家系间胸径生长差异极显著,单株材积生材差异显著,树高生长差异不显著。结合生长性状指标和干形得分,以10%的入选率评价得出17、44、35、12和3号家系可作为进一步优良家系选择的重要遗传材料,并从5个家系中筛选出79株优良单株,其中17号家系表现最佳,其平均胸径、平均树高和平均单株材积分别为21.1cm、23.5 m和0.1095 m^(3),材积较均值提高38.7%。Based on the growth traits and stem form differences among Eucalyptus dunnii families,the growth traits and stem form differences of 9-year-old E.dunnii families in Huanjiang County of Guangxi were analyzed and evaluated.The results showed that the average DBH,tree height and the average individual volume was 18.9 cm,20.5 m,0.2952 m^(3) respectively.There were significant differences in DBH and individual volume growth among families,but no significant differences in tree height growth.Based on the growth trait index and stem shape score,families 17,44,35,12 and 3 can be used as important genetic materials for further selection of excellent families,with a selection rate of 10%there were 79 excellent individuals were selected from these 5 families.Among these,family no.17 performed best with an average DBH,height and volume of 21.1 cm,23.5 m and 0.1095 m^(3) respectively,with the latter trait being 38.7%higher than the average.

关 键 词：邓恩桉 优良家系 遗传增益 遗传力 

分 类 号：S758.52[农业科学—森林经理学]