小麦重要抗源和后备品种对条锈菌突变菌株抗性的进一步研究

用小麦条锈菌集中２９号的７个突变菌株测定了我国４２个重要抗源品种和５２个衍生品种及４７个区（预）试品种。结果表明，８个抗源品种对野生菌系和突变菌株仍保持免疫到中抗反应，以长穗偃麦草和６８２８－０－６－１－１为抗源的品种抗锈稳定性较好，４个区试和３个预试品种抗锈稳定性也较好。并对这些抗源的利用和后备品种的推广应用前景提出了建议。

The Resistance of Major Wheat Accession and Candidate Cultivars to Mutants from stripe Rust

The resistant stalility of 42 major accessions for sources of rust-resis-tance,52 derivative cultivars of certain resistance sources and 47 regionaI test cultivarsand pre-regional test cultivars in Northwest China was tested by inoculating 7 mutantsfrom wheat stripe rust.The results showed that 8 accessions were resistance to all mu-tants and Cy29-1,which should be valuable in current whaeat breeding ,and derivativecultivars from Agropyron elongatum and 6828-0-6-1-1 were highly resistant to all mu-tants,Also,4 regional test cultivars and 3 pre-regional test cultivars have resistant sta-bility. Some suggesions for cultivars release and application were recomanded.