摘要
１９９６～１９９７年，从贵州省１８个县（市）采集分离小麦白粉菌有性和无性世代菌株１０１个，分别接种在９个鉴别品种上，共鉴定出２６个小种，其中出现频率最高、分布最广的是３１５号小种，其次是３１１、１、７、１５和３７７号小种。低毒力（０～７）、中毒力（１０～７７）和高毒力（１００～７７７）三类小种群的出现频率分别为２５．７％、１３．９％和６０．４％。供试菌株对９个鉴别品种的毒性频率依次为１００％、３８．６％、６０．４％、７０．３％、１１．９％、１０．９％、５０．４％、４９．５％和１１．９％。鉴定结果还表明，我省小麦白粉菌生理小种的组成和分布具有明显的地区特点。
During 1996～1997 ,101 isolates of sexual and asexual generation of Ersiphe graminis f sp tritici , collected from 18 counties of Guizhou were inoculated on nine different wheat cultivars respectively. Twenty six physiological races were identified.Among them,315 race has the highest frequence and the widest distribution,followed by 311,1,7,15 and 377 race.The emergence frequencies of three group of race,low virulence(0～7),middle virulence(10～77)and high virulence(100～777)were 25 7%,13 9% and 60 4% respectively The virulence frequencies of 101 isolates to 9 different cultivars were 100%,38 6%,60 4%,70 3%,11 9%,10 9%,50 4%,49 5% and 11 9% respectively The results and analysis showed that the constitution and distribution of physiological race in Guizhou has its dominant regional characteristics
出处
《贵州农业科学》
CAS
1997年第6期12-15,共4页
Guizhou Agricultural Sciences
基金
贵州省科学基金
关键词
小麦
白粉菌
生理小种
组成
分布
Erysiphe graminis f sp tritici
physiological race
constitution
distribution
