板栗新病害褐缘叶枯病及病原鉴定.pdfVIP

47 5 林 业 科 学 Vol. 47 ，No. 5 第 卷 第 期 2 0 1 1 5 SCIENTIA SILVAE SINICAE May ，2 0 1 1 年 月 板栗新病害褐缘叶枯病及病原鉴定* 1 2 2 3 2 1 姜淑霞 刘传忠 王庆华 贾 宁 李 超 马洪兵 (1. 山东农业大学植物保护学院 山东省农业微生物重点实验室 泰安 27 10 18 ;2. 山东省泰安市徂徕山林场 泰安 27 1000 ; 3. 山东农业大学林学院 泰安 27 10 18 ) : ; ; 关键词 板栗褐缘叶枯病 症状 病害鉴定 中图分类号:S7 18. 15 文献标识码:A 文章编号:100 1 － 7488 (20 11)05 － 0 177 － 04 A New Chestnut Disease— Brown Margin Leaf Blight and the Pathogen Identification Jiang Shuxia1 Liu Chuanzhong2 Wang Qinghua2 Jia Ning3 Li Chao2 Ma Hongbing1 (1. College of Plant Protection ，Shandong Agricultural University Shandong Provincial Key Lab． of Agricultural M icrobiology Tai ’an 27 10 18 ; 2 ． Chulaishan Tree Farm Tai ’an 27 1000 ;3. College of Forestry ，Shandong Agricultural University Tai an 27 10 18 ) Abstract : A new leaf disease occurs in chestnut-producing areas of Taian and Linyi in Shandong Province ． Brown spots of 2 － 3 mm were formed on the infected leaves at initial stage ． With the rapid expansion of lesions ，the center of spots turned yellow cinnamon and had dark brown on edge ． The diseased leaves showed irregular dry rot in a large area at the same time ，which seriously influenced the tree vigor and yield ． This disease was identified as a new leaf disease with the pathogen morphology and molecular biological characters ，named as brown margin leaf blight ． The isolate BY 1 was found to be a kind of pathogenic strain of Phomop sis castaneae-mollissimae by pathogenicity test ． Key words : brown margin leaf blight of C．