摘要
１９９３～１９９４年，自河北省收集１５４个小麦白粉菌株，接种在１５个已知抗白粉病基因小麦品种及近等基因系上。结果表明，Ｖ１、Ｖ３ａ、Ｖ３ｂ、Ｖ３ｃ、Ｖ５、Ｖ６、Ｖ７、Ｖ８、Ｖ１＋２＋９毒性基因出现频率最高，均在９６％以上；Ｖ１７出现频率次之，为５１．９％；Ｖ２、Ｖ４ａ、Ｖ２＋６再次之，出现频率分别是２５．３％、２６．８％和９．１％；出现频率最低的是Ｖ４ｂ，仅３．９％。在毒性基因组合中，出现频率最高的是Ｖ１＋Ｖ３ａ＋Ｖ３ｂ＋Ｖ３ｃ＋Ｖ５＋Ｖ６＋Ｖ７、Ｖ８＋Ｖ１＋２＋９，达９８．１％，其次是Ｖ２＋Ｖ２＋６、Ｖ２＋Ｖ４ａ、Ｖ４ａ＋Ｖ２＋６、Ｖ４ａ＋Ｖ４ｂ、Ｖ２＋Ｖ４ｂ、Ｖ２＋Ｖ４ａ＋Ｖ４ｂ，出现频率分别为３．１％、２．５％、１．８％、１．８％、１．２％、１．２％，再次是Ｖ４ｂ＋Ｖ２＋６、Ｖ２＋Ｖ４ａ＋Ｖ４ｂ、Ｖ２＋Ｖ４ａ＋Ｖ４ｂ＋Ｖ２＋６，出现频率均为０．６％，这说明含有相应抗病基因的品种是高度抗病的，能将其相应的抗病基因重组在一起，对抗白粉病是有效的。
In 1994 and 1995,154 strains of Erysiphe graminis f. sp. tritici colected from Hebei Province were inoculated on 15 wheat cultivars and isolines with known powdery mildew resistance monogenes. The virulence gene frequencies of V1,V3a,V3b,V3c,V5,V6,V7 and V8 appeared very high (more than 96%), followed by V17(51.9%), the virulence gene frequencies of V2 and V4awere 25.3% and 20.8%, respectively, and those of V4b were low (less than 3.9%).Virulence gene combinations frequencies of V1+V3a+V3b+V3c+V5+V6+V7+V8 and V1+V2+V9 appeared very high (90%-98%). The virulence gene combination frequencies of V2+V4a,V2+V4b,V2+V6,V4a+V17,V4a+V4b,V2+V4a+V6,V2+V4b+V6 were low(less than 2.6%), it showed that cultivars with corresponding resistance gene combinations would be highly resistant.
出处
《华北农学报》
CSCD
北大核心
1997年第4期90-93,共4页
Acta Agriculturae Boreali-Sinica
基金
河北省自然科学基金
关键词
小麦
白粉菌
毒性基因
河北
Wheat
Frysiphe graminis
Virulence genes
