【摘要】 以小麦条锈菌野生菌系（ＣＹＲ２９－１）及其７个毒性突变菌株测定小麦品种的抗锈性分化，发现水源１１、抗引６５５和无芒中四群体对某些菌系有抗病性分化，一些抗源品种和后备品种也出现比例不同的抗感植株和不同低反应型的植株，证实这些品种群体对不同菌系具有抗病异质性。讨论了品种抗锈性分化的原因及在抗病品种丧失抗锈性中的作用，对改进小种鉴定、应用抗源等提出了建议更多还原

【Abstract】 ifferentiation of the resistance in wheat cultivars to stripe rust (Puccinia striiformis) was tested with wild type physiological race CYR29 1 and its 7 mutants. The results indicated that the populations of Suwon 11, Kang yin 655, and Beardless Zhong 4 differentiated in their resistance to these stripe race and mutants. So were some sources of resistance, commercial cultivars and candidate cultivars, with different ratios of R:S or R:MR individuals. All these indicates that the populations of these accessions are heterogeneous in their resistance to stripe rust. The cause of the differentiation of the resistance of wheat cultivars to stripe rust was also discussed, and the improvement on the screening and utilization of sources of resistance suggested.更多还原