中国农业科学2012，Vol.45Issue(16)：3240-3248,9.DOI:10.3864/j.issn.0578-1752.2012.16.002
小麦-十倍体长穗偃麦草广谱抗锈易位系的鉴定及分析
Analysis of Wheat-Thinopyrum ponticum Translocation Lines with Broad Spectrum Resistance to Stripe Rusts
摘要
Abstract
[Objective] To transfer strip rust resistance from Thinopyrum ponticum to common wheat, wide hybrid progenies between them were screened for strip rust resistance. [Method] The progenies were characterized by their disease resistance, agronomic traits, genomic in situ hybridization and quality related protein analysis. [Result] Eight lines with good resistance or immune to the pathogens at adult stage were obtained. All of them have 42 chromosomes, in which seven lines convey a new translocation, 4DS/4St. In addition, besides this translocation, the GDR3 conveys another terminal translocation, which may be derived from the E-genome chromosomes of Th. Ponticum. The GDR3 performed very good resistance in whole life. It was immune to yellow rusts. It was estimated that both of the alien segments convey resistant genes to the stripe rust. The high molecular weight glutenin subunits (HMW-GS) analysis indicated that all of the eight lines convey the good subunits 14+15 at Glu-B1, which'should be inherited from Xiaoyan 6. [Conclusion] Wild relatives of wheat usually convey genes with broad spectrum resistance to pathogens. This is the genetic base for their surviving in extreme environment, which also provide excellent gene resource for disease resistant breeding in wheat.关键词
小麦/十倍体长穗偃麦草/条锈病/易位系Key words
common wheat/ Thinopyrum ponticum/ stripe rust/ translocation引用本文复制引用
郝薇薇,汤才国,李葆春,郝晨阳,张学勇..小麦-十倍体长穗偃麦草广谱抗锈易位系的鉴定及分析[J].中国农业科学,2012,45(16):3240-3248,9.基金项目
国家小麦产业技术体系(CARS-3-1-2) （CARS-3-1-2）
