麦类作物对禾谷胞囊线虫的抗病性

RESISTANCE OF CEREAL CULTIVARS TO CEREAL CYST NEMATODE, HETERODERA AVENAE

来源于澳大利亚的25份麦类作物抗性材料及中国8个省市的22个小麦品种对禾谷胞囊线虫太谷群体的抗病性测定表明,6个由硬粒小麦(Triticum turgidum var. durum)(基因组AABB)的品种“Langdon”与节节麦(T.tauschii)(基因组DD)的抗性材料为亲本合成的异源六倍体小麦均表现高抗;一些含有抗病基因Ccn-1(对致病型Ha13抗病)的品种,如Festiguay和Aus10894等表现感病;其它来源于澳大利亚的6份燕麦及5份大麦材料也均高抗。国内小麦品种大都中度感病,只扬州5号和郑州831明显抗病。

25 resistance accessions of cereals from Australia and 22 cultivars of wheat from eight provinces of China were assessed for resistance to the Taigu population of cereal cyst nematode, Heterodera avenae, from Shanxi Province, China. It was found that six synthetic allihexaploid wheat accessions derived from Triticum turgidum var. durum (genome AABB), 'Langdon', and H. avenae resistant accessions in T. tauschii (genome DD) were highly resistant to the Taigu population of H. avenae. Some wheat cultivars containing resistance gene Ccn-1, such as Festiguay and Aus 10894, which are resistant to pathotype Hal3, were susceptible to the Chinese population, and 6 oats and 5 barley accessions from Australia were highly resistant. Most Chinese wheat cultivars tested were moderately susceptible, Yangzhou 5 and Zhengzhou 831 were resistant.