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小麦品种洛夫林13是我国近年来广泛应用的抗源材料之一。它被引入陇南后,于1979年开始其抗条锈性发生变异,随后病情逐年加重。据作者调查,1984和1985年陇南洛夫林13田块已出现典型的高感植株。我国现有的条锈菌生理小种对小麦洛夫林13均无致病性,为此作者于1982—1985年对洛夫林13上的条锈菌系进行了分离培养和回接筛选,并对发现的洛夫林13菌系进行了初步研究。现将结果简报如下。
Lovrin 13, a wheat variety, is one of the most widely used anti-source materials in China. After it was introduced into Longnan, its resistance to stripe rust began to change in 1979, and its condition gradually increased year by year. According to the author’s investigation, typical high-sensitive plants have emerged in 13 plots in Lovrin, Longnan in 1984 and 1985. In our country, the existing races of P. striiformis had no pathogenicity to wheat Lovrin 13, so the authors isolated and cultivated the stripe rust strains of Lovrin 13 from 1982 to 1985, The preliminary study on the Lovrin 13 strain was also carried out. The result is now as follows.