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根据大量的试验结果,找出适合我国叶锈菌的鉴别寄主,它们是‘白蚰包’、‘东方红3号’、‘丰产3号’、‘6068’、‘洛夫林10号’、‘泰山1号’、‘泰山4号’,‘IRN66-331’、‘Redman’等小麦。应用所选出的鉴别寄主,5年来共分析了1,237个标样。这些标样每年采自15个省到18个省,它们可划分为11个类型。其中‘叶中1号’、‘叶中2号’、‘叶中3号,(即‘植12’、‘植10’、‘植1’)系1977年夏季由我所与河北农大植保系、黑龙江省植保所等单位协商统一规定的。‘叶中1号’的出现频率最低为44.5%,最高为49.6%,‘叶中2号’为6.1～13.5%,‘叶中3号’为11.5～24.7%,植11为8.1～15%,这就清楚的看出,目前我国存在的小麦叶锈菌小种以‘叶中1号’、‘叶中2号’、‘叶中3号’和‘植11’较多,除1978年发现的小种类型山东A 型除外,其他小种出现频率较低或很低。这些小种在抗病育种和生产上都有重要价值。例如,‘叶中1号’对白蚰包’的致病性很弱,不同于‘叶中2号’、‘叶中3号’、‘植5’、‘植11’等,但对‘农大166’、‘博爱7023’、‘甘麦8号’、‘济矮6号’等都有强或较强的致病力,而‘叶中2号’则比‘叶中1号’弱,又‘叶中3号’对‘抗引655’、‘6068’,‘植5’对‘洛夫林10号’均表现一定的致病力,而‘叶中1号’、‘叶中2号’、‘植11’等则完全缺乏致病力,并表现为免疫。
According to a large number of test results, identify the suitable host for the identification of the leaf rust in our country, which are ’Baizhi Bao’, ’Dongfanghong No.3’, ’Bumper No. 3’, ’6068’, ’Lovrin No.10’ ’Taishan 1’, ’Taishan 4’, ’IRN66-331’, ’Redman’ and other wheat. A total of 1,237 samples were analyzed over a five-year period using the selected identification hosts. These standards are collected annually from 15 provinces to 18 provinces and can be divided into 11 types. Among them, ’Yezhong 1’, ’Yezhong 2’ and ’Yezhong 3’ (ie, ’plant 12’, ’plant 10’ and ’plant 1’) were jointly established by Hebei Agricultural Research Institute and Hebei Agricultural University in the summer of 1977. , Heilongjiang Provincial Plant Protection Institute and other units unified agreement. The lowest occurrence frequency of ’Yezhong 1’ was 44.5%, the highest was 49.6%, ’Yezhong 2’ was 6.1 ~ 13.5%, ’Yezhong 3’ was 11.5-24.7%, and plant 11 was 8.1-15% , It is clearly seen that at present, there are more races of wheat leaf rust in our country, such as ’Yezhong 1’, ’Yezhong 2’, ’Yezhong 3’ and ’Plant 11’ Except for the small type Shandong type A discovered, other races appeared lower or lower frequency. These races have important value in disease resistance breeding and production. For example, ’Yezhong 1’ is not very pathogenic to Baizhu package because it is different from ’Yezhong 2’, ’Yezhong 3’, ’Plant 5’, ’Plant 11’ 166 ’,’ Boai 7023 ’,’ Ganmai 8 ’and’ Jizai 6 ’all had strong or strong virulence, while’ Yezhong 2 ’was weaker than’ Yezhong 1 ’ In addition, ’Yezhong 3’ showed certain pathogenicity against ’Citation 655’, ’6068’, ’Plant 5’ and ’Lovrin 10’, while ’Yezhong 1’, ’Zhongzhong 2 No. ’,’ Plant 11 ’is completely lack of virulence, and showed immunity.