2008-2009年甘肃省小麦条锈菌生理小种监测结果

2008-2009年对甘肃省657份小麦条锈菌标样生理小种进行了监测，共监测出27个生理小种及致病类型。主要以Hybrid46及水源11致病类群为主。优势小种为条中33号、条中32号。条中33号居第1位，出现频率为21.5%~37.6%。条中32号已由2008年的第2位降到2009年的第3位，出现频率为15.1%~16.0%，基本保持稳定。次要小种水源11-4、5、7类型出现频率略有下降。新类型条中33（F.抗）出现频率为11.6%~18.9%, 水源11-4（F.抗）、水源11-7（尤ⅡS）出现频率不断上升。Yr9、Yr3b+4b、YrSu为我省的主要致病基因。抗锈育种应以条中33号、条中32号、水源11-4为主，兼顾Hybrid46和水源11致病类群中其他致病类型。

Monitoring results of physiologic races of wheat stripe rust in Gansu Province during 2008-2009

Six hundred and fifty-seven wheat stripe rust samples,collected from Gansu during 2008-2009,were monitored,among which 27 physiologic races and pathotypes were detected,dominated by Hybrid46 and Shuiyuan 11 pathotypes.CY33 and CY32 were the dominant races.CY33 was still the first dominant race,with a frequency of 21.5%-37.6%.Declining from the second dominant race in 2008 to the third in 2009,CY 32 was stable,with a frequency of 15.1%-16.0%,replaced by CY33(anti-F) with a frequency of 11.6%-18.9%.The freque...