论文部分内容阅读
对１９９５年甘肃省主要麦区２０３份小麦条锈标样进行了分析，共监测出３２个小种类型。其中，能够明确归类的有１６个，共计１３１份，占总鉴定标样数的６４．５％；感染水源１１、Ｈｙｂｒｉｄ４６的１６个，共７２份，占３５．５％。发现水源１１、Ｈｙｂｒｉｄ４６两致病类群逐年递增，已由１９９４年的５０．７％上升到１９９５年的７５．４％，条中３１号已成为主要流行小种，其它致病类型亦有一定比例；而一直居首位的洛１３致病类群已降到１２．３％，２９号小种已降为第２位；老小种洛１０类群基本保持稳定。监测结果表明，甘肃小麦条锈菌正处于变异活跃期，３１号等小种对农业生产将有重大威胁
Totally 203 wheat stripe rust samples from the main wheat growing areas in Gansu Province in 1995 were analyzed and 32 minor species were detected. Among them, 16 can be clearly classified, a total of 131, accounting for 64.5% of the total number of identification; infection of water 11, Hybrid46 16, a total of 72, accounting for 35.5%. It was found that the watery 11 and hybrid46 two groups increased year by year, from 50.7% in 1994 to 75.4% in 1995. Article 31 has become the main epidemic races, and other pathogenic types have a certain proportion ; While the first group of Luo 13 pathogenic groups has been reduced to 12.3%, No. 29 races has been reduced to No. 2; Elder 10 kinds of Luo basically remained stable. Monitoring results show that wheat stripe rust is in a period of active mutation in Gansu and other minor races such as No. 31 will pose a significant threat to agricultural production