年际间干旱对晚疫病菌生理小种复杂性的影响  

Effects of inter-annual drought on the complexity of physiological races of Phytophthora infestans

作　　者：金光辉[1,2,3] 李学湛[4] 王玉成[5] 王腾[6] Jin Guanghui Li Xuezhan Wang Yucheng Wang Teng(Post-doctoral Research Station of Northeast Forestry University, Harbin 150040, China Post-doctoral Programme of Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China Agronomy College of Heilongjiang Bayi Agricultural University, Daqing 163319, China Institute of Plant Seedling Nursery Stock, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China Northeast Forestry University, Harbin 150040, China Keshan Branch of Heilongjiang Academy of Agricuhural Sciences, Qiqihar 161005, China)

机构地区：[1]东北林业大学博士后科研流动站,哈尔滨150040 [2]黑龙江省农业科学院博士后科研工作站,哈尔滨150086 [3]黑龙江八一农垦大学农学院,大庆163319 [4]黑龙江省农业科学院植物脱毒苗木研究所,哈尔滨150086 [5]东北林业大学,哈尔滨150040 [6]黑龙江省农业科学院克山分院,齐齐哈尔161005

出　　处：《植物保护》2017年第4期167-173,共7页Plant Protection

摘　　要：由致病疫霉Phytophthora infestans引起的晚疫病是马铃薯生产中最具毁灭性的病害,生理小种是晚疫病菌最重要的生物学特性之一,其组成直接关系到晚疫病的发生与流行。本研究以2007年黑龙江省干旱为契机,对2004-2010年采自黑龙江省的晚疫病菌菌株进行生理小种鉴定,结果表明,382个晚疫病菌菌株中共鉴定出91个生理小种类型,2004-2006年的优势小种为3.4.6.7.8.9.10.11,2007-2009年的优势小种为3.4.7.11,2010年的优势小种为1.3.4.7.8.10.11。2007年生理小种的复杂程度为历年最低,并影响了2008年与2009年的生理小种组成,2010年的生理小种复杂程度则出现明显上升。Late blight caused by Phytophthora infestans is the most devastating disease in potato production.Physiological race is one of the most important biological characteristics of P.infestans.Its composition is directly related to late blight occurrence and popularity.With drought in Heilongjiang Province in 2007 as a turning point,physiological races of P.infestans isolates collected from Heilongjiang Province during 2004 to 2010 were identified in this study.The results showed that 91 physiological races were identified from^382 isolates.The dominant race in2004-2006 was 3.4.6.7.8.9.10.11,and that in2007-2009 and2010 was 3.4.7.11 and1.3.4.7.8.10.11,respectively.The complexity of physiological races in2007 was the lowest during these years,which also affected the physiological races in the 2008 and2009.The complexity of the physiological race in2010 is significantly increased.

关 键 词：致病疫霉 干旱 生理小种 复杂性 

分 类 号：S435.32[农业科学—农业昆虫与害虫防治]