我国小麦白粉病小种毒力变异动态简报１９８４～１９９３年我组对全国小麦白粉病菌毒力进行监测。按八进制命名小种，编号愈大毒力愈强（或毒谱愈宽），我们把侵染１～３号鉴别寄主的１～７号小种称为低毒力小种；侵染１～６号鉴别寄主的１１～７７号小种称为中毒力小种；... Dynamic Variation of Small Powdery Toxicity of Wheat Powdery Mildew in China 1984-1993 Our group monitored the virulence of powdery mildew of wheat in our country. According to the octal naming races, the bigger the number, the stronger the virulence (or the narrower the locus), we named the races 1 to 7 that infected the host 1 to 3 as low virulent races; No. 6 identification host 11 ~ 77 race called toxic races; ...