花椒落叶病寄主抗病性及其病原菌生物学特性  

The Host′s Resistance to Zanthoxylum bungeanum Disease and Pathogen′s Biological Characteristics Defoliation Disease

作　　者：陈丹[1] 曹支敏[1] 王培新[2] 

机构地区：[1]西北农林科技大学林学院,陕西杨陵712100 [2]陕西省森林病虫害防治检疫总站,陕西西安710082

出　　处：《西北林学院学报》2008年第6期126-128,141,共4页Journal of Northwest Forestry University

基　　金：国家"十一五"科技支撑项目(2006BAD08A1103)

摘　　要：对陕西省渭北和宝鸡地区花椒落叶病病情指数进行了调查,结果表明:常见花椒品种的抗病性序列为:米椒>豆椒>大红袍。对于同一花椒品种,在温暖高湿地区易感病,在海拔较高且降水量少的高山地区则发病较轻;花椒树冠下部感病指数高于树冠上部。对花椒落叶病病原菌的生物学特性研究表明:花椒盘二孢菌的生长最适温度为25℃,以燕麦片培养基生长状况最佳,碳源以蔗糖最佳,氮源以蛋白胨为适宜;病菌菌落在偏酸性条件下生长良好;光照对其菌落生长影响不大。The investigation of defoliation disease indices of prickly ash in Weibei and Baoji areas of Shaanxi province showed that the resistance of different varieties(hosts) appeared in the order as follows:Mi>Dou>Da-hong-pao.For the same variety of prickly ash,the disease index in the warm and humid area was higher than cool and drought area in mountains of higher altitude,and the lower part of the crown was easily infected than the top part.The tests on the biological characteristics of pathogen,Marssonina zanthoxyli,showed that the optimum temperature for pathogen growth was 25℃,with culture medium of oatmeal to be best,and sucrose to be the optimum medium from carbon source and peptone from nitrogen source.The pathogen favored growth condition with a little acid and lights had little effect on its development.

关 键 词：花椒 落叶病 抗病性 花椒盘二孢菌 

分 类 号：S718.8[农业科学—林学]