桉树伞房属4个树种在广西的早期病害调查  

Investigation of Leaf and Stem Diseases on Four Corymbia Species in Guangxi

作　　者：郭东强[1] 邓紫宇[1] 郑永邓 覃开锋 廖旺娇 李娟 陈健波[1] GUO Dong-qiang;DENG Zi-yu;ZHENG Yong-deng;QIN Kai-feng;LIAO Wang-jiao;LI Juan;CHEN Jian-bo(Guangxi Forestry Research Institute, Nanning 530002, Guangxi, China;Guangxi State-owned Sanmenjiang Forest Farm, 545006, Guangxi, China)

机构地区：[1]广西壮族自治区林业科学研究院,广西南宁530002 [2]广西壮族自治区国有三门江林场,广西柳州545006

出　　处：《桉树科技》2017年第4期47-52,共6页Eucalypt Science & Technology

基　　金：国家林业局948项目(2013-4-48);广西林业科技项目(桂林科研[2015]第4号)

摘　　要：本文调查分析了引自澳大利亚的桉树伞房属4个树种23个种源209个家系在广西柳州试验点遭受桉树Quambalaria顶梢与白叶枯萎病病害情况。4个引进树种中斑皮桉和大叶斑皮桉受害最为严重,感染率分别达99.2%和97.9%;柠檬桉和斑皮柠檬桉总体抗性表现较好,感病率为63.2%和72.4%。4个树种易感病的特性和适宜的降雨环境,是病害集中爆发的主要原因。对伞房属4个树种的下一步研究应注重于抗病种源、家系的选育。This paper reports on the investigation of the incidence of stem wilt and leaf blight pathogens,primarily Quambalaria pitereka,on209families representing23provenances of4species from the genus Corymbia,imported from Australia,that were growing in Guangxi.Among the four species,Corymbia maculata and C.henryi were the most severely affected,with infection rates of99.2%and97.9%respectively.Overall resistance of C.citriodora subsp.citriodora and C.citriodora subsp.variegata was somewhat better,with the disease infection rates of63.2%and72.4%respectively.The morphological characteristics and natural adaptation to specific climatic environments of the four species seemed to be the main causes for disease incidence.Further studies of these four Corymbia species will need to focus on selection and breeding of provenances and families for disease resistance.

关 键 词：伞房属 斑皮桉 大叶斑皮桉 柠檬桉 斑皮柠檬桉 Quambalaria顶梢与白叶枯萎病 

分 类 号：S763[农业科学—森林保护学]