| 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。 |
| 关键词: 小麦条锈菌，新菌系，毒性，抗病性，品种 |
| DOI： |
| 分类号:S435.121.4 |
| 基金项目:国家“八五”攻关课题 |
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| Discovery of New Isolates Vifulent to Wheat Cultivars of Mianyang System in Wheat Stripe Rust |
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Kang Zhensheng Li Zhenqi Shang Hongsheng Lu Hepign Liu Xuedong
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| Abstract: |
| Three new isolates virulent to adult plant of wheat cultivar Mianyang 11 in wheat stripe rust were screened out from the samples collectd in South Gansu. The results from identification on the differentials showed that the mew isolates could infect wheat cultivars Lovrin 13 or Lovrin 10, but their infection types were different from that of Yrc 28 and Yrc 29,which also wrer disable to infect the adult of Mianyang 11.It was found in testing that the new isolates could infect some of current production wheat cultivars in South Gansu and Guanzhong in Shaanxi Province and some accessions. With the development of the new isolates, it may cause Mianyang 11 to lose its resistance to wheat stripe rust. |
| Key words: wheat stripe rust, new virulent isolate,virulence,disease resistance,wheat cultivar |
