【摘要】 从陇南小麦条锈菌标样中分离出三个能侵染绵阳１１成株的新菌系。鉴定结果表明，尽管三个菌系分别能侵染洛夫林１３或洛夫林１０，但在其他品种上的反应模式明显不同于条中２８、条中２９号小种，并且条中２８和条中２９号小种对绵阳１１成株均无毒性。毒性范围测定表明，三个新菌系能侵染陇南、关中的一些生产品种和一些抗源材料。随着新菌系的进一步发展，可能会引致绵阳１１小麦品种抗条锈性的丧失。更多还原

【Abstract】 Three new isolates virulent to adult plant of wheat cultivar Mianyang 11in wheat stripe rust were screened out from the samples collectd in South Gansu. Theresults from identification on the differentials showed that the mew isolates could infectwheat cultivars Lovrin 13 or Lovrin 10, but their infection types were different fromthat of Yrc 28 and Yrc 29,which also wrer disable to infect the adult of Mianyang 11.Itwas found in testing that the new isolates could infect some of current production wheatcultivars in South Gansu and Guanzhong in Shaanxi Province and some accessions. Withthe development of the new isolates, it may cause Mianyang 11 to lose its resistance towheat stripe rust.更多还原