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本文采用Wolfe等提出的毒性频率分析法首次对河北省小麦叶锈菌群体的毒性基因及其频率进行了研究,结果表明:毒性基因V_2d,Vs。,V(14a),V_(14b),V_(16)和V_(18)在叶锈菌群体中普遍存在,相对频率高于82.35％,V_9,V_(19),V_(24),V_(25),V_(28)和V_(29)较少,相对频率为0—16.61％,V_1,V_(2a),V_(2c),V_(3Bg),V_(10),V_(14ab),V_(15),V_(17),V_(21),V_(23),V_(26)和V_(30)介于以上二者之间,相对频率为21.22—73.61％。作者根据毒性基因在各地区的分布,初步提出省内抗性基因布局意见。
Toxicity frequency analysis method proposed by Wolfe et al. Was used for the first time to study the virulence genes and their frequencies of wheat leaf rust population in Hebei province. The results showed that the virulence genes V_2d, Vs. V 14, V 16 and V 18 were common in the leaf rust population, and the relative frequencies were higher than 82.35%, V 9, V 19, V 24, V_ (24), V_ (14) V_ (2), V_ (3Bg), V_ (10), V_ (14ab), V_ (28) and V_ (29) are relatively few with the relative frequency of 0-16.61% The V_ (15), V_ (17), V_ (21), V_ (23), V_ (26) and V_ (30) are between the above and the relative frequency is 21.22-73.61%. Based on the distribution of virulence genes in different regions, the authors initially put forward opinions on the layout of resistance genes in the province.