摘要
对来自新疆的104个小麦品种、高代品系及35个含有已知抗叶锈基因载体品种,在苗期接种12个中国小麦叶锈菌生理小种进行抗叶锈基因推导分析和分子检测;2007-2008年和2008-2009年连续2年度对这些材料进行成株抗叶锈性鉴定并筛选慢叶锈性品种。研究结果显示,在41个品种中共鉴定出6个已知抗叶锈基因Lr26、Lr34、Lr50、Lr3ka、Lr1和Lr14a,其中Lr26存在于21个品种中,Lr34在17个品种被发现,Lr1和Lr14a分别存在于3个品种中,还有2个品种携带Lr3ka以及1个品种携带Lr50。2年田间抗叶锈性鉴定筛选出7个慢叶锈性品种,可用于小麦抗病育种。
104 winter wheat cultivars and advanced lines in Xinjiang province were inoculated with 12 Chinese pathotypes of Puccinia triticina for postulation of leaf rust resistance genes effective at seedling stage.These genotypes were also planted in the field for characterization of slow rusting responses to leaf rust in the 2007-2008 and 2008-2009 cropping seasons.Six leaf rust resistance genes Lr1,Lr3ka,Lr14a,Lr26,Lr34,and Lr50,either singly or in combinations,were found in 41 genotypes,whereas known resistance genes were not identified in the other 63 accessions.Resistance gene Lr26 was present in 21 accessions.Lr34 was identified in 17 lines.Genes Lr1 and Lr14a were also detected in three entries.Lr3ka was present in two lines and Lr50 may exist in one line.Seven genotypes showed slow leaf rusting resistance in two cropping seasons.
出处
《植物遗传资源学报》
CAS
CSCD
北大核心
2011年第2期203-210,共8页
Journal of Plant Genetic Resources
基金
国家自然科学基金(30971772
30700505)
农业部"948"项目(2006G2)
新疆兵团农业科技攻关项目(2006GG04)
河北省教育厅基金项目(2010140)
关键词
新疆
小麦
叶锈病
基因鉴定
慢锈性
Wheat
Xinjiang province
Leaf rust
Identification of genes
Slow-rusting resistance
