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用山西省七个地区的142个小麦叶锈菌株,分别对山西省的48个小麦品种(包括当前生产品种26个,区试品种15个和抗源材料7个)接种,研究两者的相互作用。通过毒力频率,抗性指数的测定,毒性公式和联合抗病性的分析,可以看出,山西省现在生产上大面积推广的小麦品种中有20个都属于高度感染叶锈病的类型,参加区试的后备品种抗叶锈性也差。抗源材料中也只有中四和中五表现高抗。因此,寻找新的抗源材料和培育抗叶锈病的品种,是急待解决的问题。有些品种例如北京10号、农大139、雁8013等虽然表现为感染叶锈病。但对叶锈菌群体的不同茵株表现3-侵染型的百分率较高,有一定的抗锈性,可结合抗条锈性和农艺性状作进一步的改进和利用。育种单位用的主要抗源如洛夫林10、洛夫林13、山前麦和高加索等,对山西叶锈菌群体的反应表现为中度或高度感染,反映山西省叶锈菌的群体毒性比北京、河北、河南、新疆的都强,值得注意。
A total of 142 wheat rust isolates from seven wheat cultivars in Shanxi Province were used to inoculate 48 wheat cultivars (including 26 cultivars, 15 test cultivars and 7 resistant cultivars) in Shanxi province. effect. Through the analysis of virulence frequency, resistance index, toxicity formula and combined disease resistance, it can be seen that 20 of the wheat varieties now widely spread in Shanxi province are of the type of highly infected leaf rust. The precautionary variety of leaf rust resistance is poor. Anti-source materials, only the fourth and fifth performance of high resistance. Therefore, looking for new anti-rust materials and cultivating varieties of leaf rust is an urgent problem to be solved. Some varieties such as Beijing No. 10, Nongda 139, Geese 8013, although the performance of leaf blight infection. However, the different strains of the leaf rust fungus population showed a higher percentage of 3-invasive type, a certain anti-rust, combined with the resistance to stripe rust and agronomic traits for further improvement and utilization. The major anti-source units used in breeding units such as Lovrin 10, Lovrin 13, Pimarana, and Caucasus were moderately or highly susceptible to the leaf rust population of Shanxi, reflecting the population toxicity of leaf rust in Shanxi Than Beijing, Hebei, Henan, Xinjiang are strong, it is noteworthy.