东北春麦区2006-2007年小麦白粉病菌群体毒性监测  

Monitoring of population virulence of Blumeria graminis f.sp tritici in spring wheat-planting regions of northeastern China during 2006-2007

作　　者：张晓蕾[1] 曹远银[1] 孙芳[1] 迟文娟[1] 徐婧[1] 

机构地区：[1]沈阳农业大学植物免疫研究所,沈阳110161

出　　处：《植物保护》2008年第3期29-32,共4页Plant Protection

基　　金：国家"十一五"支撑计划课题(2006BAD08A05);公益性行业科研专项(nyhyzx07-048)

摘　　要：对2006-2007年采自黑龙江、吉林、辽宁的80份小麦白粉病菌标样进行分离、纯化得到113个单孢子堆菌系,经生理小种及群体毒性频率测定,共鉴定出29个生理小种,优势小种均为15号小种。15号小种在2006年和2007年的频率分别为15.3%和14.8%,其次为415号和11号小种。小麦白粉菌毒性基因v1v、3 av、3 b、v3 cv、5、v6、v7v、8、v1+2+9和v17毒力频率较高(>66%),而v2v、4、v12、v16和v21毒力频率较低(<21%),说明目前在东北春麦区含有Pm2、Pm4、Pm12、Pm16和Pm21等抗病基因的品种在育种中有较高的利用价值。Physiological races and virulence structures of B. graminis were tested with 80 powdery mildewed samples that were obtained from Heilongjiang, Jilin and Liaoning Provinces during 2006--2007. As a result, 113 souses of B. graminis were isolated and identified, and 29 physiological races were identified, among which No. 15 was the dominant race, with its frequency as 15.3% in 2006 and 14.8~ in 2007, respectively, followed by No. 415 and 11. The virulence frequencies of vl , v3a , v3b, v3c, 7：5, v6, v7, v8, vl ＋2＋9 and v17 were high （〉66%）, but those of v2, v4, v12, v16 and v21 were low （〈21%）. It is therefore suggested that all of the current cultivars with one or more of the resistant genes Pro2, Prn4, Prn12, Prn16, Pro21 might be valuable for resistance breeding.

关 键 词：小麦 小麦白粉菌 生理小种 毒力频率 

分 类 号：S435.121.46[农业科学—农业昆虫与害虫防治]