中国生态农业学报2017，Vol.25Issue(12)：1842-1847,6.DOI:10.13930/j.cnki.cjea.170321
小麦农家品种‘红蚰子’苗期白粉病抗性鉴定和遗传分析
Identification and genetic analysis of powdery mildew resistance at seedling stage in 'Hongyouzi' Chinese wheat landrace
摘要
Abstract
Powdery mildew,caused by Blumeria graminis f.sp.tritici(Bgt),is a devastating foliar disease of wheat.The identifica-tion and utilization of elite resistant germplasm is an effective control measure of the disease. At present, most wheat cultivars/lines in China's wheat production are susceptible to powdery mildew. Moreover, few powdery mildew resistance genes are used in China. Therefore, it is essential to identify more effective and elite resistance sources and genes. The 'Hongyouzi' Chinese wheat landrace ('Jing 2350')has shown immune to high resistant of 34 out of 38 Bgt isolates at seedling stage and immune or nearly immune in the field to a composites of Bgt isolates at mature stage in Shijiazhuang,China.To further study the resistance feature and identify the resistance gene (s) of 'Hongyouzi', genetic analysis of F1plants, F2populations and their derived F2:3 families respectively from crosses of 'Huixianhong' ×'Hongyouzi' and 'Hongyouzi' ×'Mingxian169' were conducted at seedling stage. The results showed that all F1plants derived from the combinations of'Huixianhong'×'Hongyouzi'and'Hongyouzi'×'Mingxian169'were susceptible to Bgt isolate E09. The ratios of resistant F2plants to susceptible plants conformed as 1:3 and those of homozygous resistant F2:3 lines:heterozygous lines:homozygous susceptible lines conformed as 1:2:1. These results indicated that the resistance of 'Hongyouzi' to Bgt isolate E09 was conferred by a single recessive resistance gene,temporarily named PmHYZ.'Hongyouzi'was the elite pow-dery mildew resistance sources of Chinese wheat landraces, thus it was useful to effectively use elite resistance source and resistance gene in breeding resistant crops.关键词
小麦/白粉病/农家品种/红蚰子/遗传分析Key words
Wheat/Powdery mildew/Wheat landrace/Hongyouzi/Genetic analysis分类
农业科学引用本文复制引用
曹燕威,许红星,李秀全,安调过..小麦农家品种‘红蚰子’苗期白粉病抗性鉴定和遗传分析[J].中国生态农业学报,2017,25(12):1842-1847,6.基金项目
河北省自然科学基金项目(C2016503016)资助 This study was supported by Hebei Provincial Natural Science Foundation (C2016503016). （C2016503016）
