杉李盖痂锈菌锈孢子阶段的寄主种类调查  

Investigation on hosts of aecial stage of Thekopsora areolata

作　　者：徐红霞 杨帆 屠彩芸 张睿珂 曹秀文 XU Hongxia;YANG Fan;TU Caiyun;ZHANG Ruike;CAO Xiuwen(Institute of Forestry Science of Bailongjiang in Gansu Province,Lanzhou 730046,China;Gansu Bailongjiang National Forest Ecosystem Research Station,Zhouqu 746300,China)

机构地区：[1]甘肃省白龙江林业科学研究所,甘肃兰州730046 [2]甘肃白龙江森林生态系统国家定位观测研究站,甘肃舟曲746300

出　　处：《中国森林病虫》2023年第2期30-34,共5页Forest Pest and Disease

基　　金：甘肃省青年科技基金计划项目“濒危植物大果青杄小孢子叶球生长发育研究”(No.20JR5RA087);甘肃林业科技计划项目“白龙江林区云杉球果锈病研究”(No.2018lykj047);甘肃省林业和草原局科技创新项目“白龙江林区云杉锈病研究”(No.2020 kjcx 011)。

摘　　要：2017至2020年,在甘肃省插岗梁省级自然保护区云杉人工林和苗圃,采集不同云杉树种的球果,分别在显微镜和扫描电镜下观察锈孢子器、锈孢子及其包被的形态特征,对病原进行初步鉴定,同时调查9种云杉上球果锈病发病率。结果表明:在插岗梁省级自然保护区内5种常见云杉中,大果青杄Picea neoveitchii球果鳞片上未发现锈孢子器;沙滩苗圃13种云杉中,只有4种结果,东方云杉P. orientalis和黑云杉P. mariana球果鳞片上未发现锈孢子器,丽江云杉P. likiangensis和西藏云杉P. spinulosa感病;通过形态特征比对,初步确定6种云杉上球果锈病的病原均为杉李盖痂锈菌Thekopsora areolata。From 2017 to 2020,cones of different species of spruce were collected from spruce plantations and nurseries in Chagangliang Provincial Nature Reserve,Gansu province.The morphological characteristics of aecium,aeciospores and aecial peridiun were observed under light microscope and scanning electron microscope(SEM)respectively to identify the pathogen primarily.Meanwhile the incidence of cone rust on nine species of spruce was investigated.The results showed that no aecium was found on cone scale of Picea neoveitchii among common five species of spruce in Chagangliang Provincial Nature Reserve.Among thirteen species of spruce in Beach Nursery,only four species of spruce bear fruit,no aecium was found on cone scale of P.orientalis and P.mariana,P.likiangensis and P.spinulosa were infected by cone rust.Through the comparison of morphological characteristics,it was preliminarily determined that the pathogen of cone rust on six species of spruce was Thekopsora areolata.

关 键 词：云杉球果锈病 杉李盖痂锈菌 发病率 

分 类 号：S763.15[农业科学—森林保护学]