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Introduction of multi-alien chromatins carrying different powdery mildew-resistant genes from rye and Haynaldia villosa into wheat genome

文献类型： 外文期刊

作者： Yuan, WY 1 ; Tomita, M 2 ; Sun, SC 2 ; Yasumuro, Y 2 ;

作者机构： 1.Tottori Univ, Fac Agr, Lab Plant Genet & Breeding, Tottori 6808553, Japan

2.Tottori Univ, Fac Agr, Lab Plant Genet & Breeding, Tottori 6808553, Japan; Shanxi Acad Agr Sci, Inst Crop Genet, Taiyuan 030031, Peoples R China

关键词： powdery mildew-resistant genes;rye;Haynaldia villosa;wheat;in situ hybridization

期刊名称：GENES & GENETIC SYSTEMS （ 影响因子：1.517； 五年影响因子：1.434 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Powdery mildew-resistant wheat lines, Tra. R9002 with rye chromatin and Tra. V149 with Haynaldia villosa chromatin, were crossed to combine their different powdery mildew-resistant genes in the wheat genetic background. In the F5 generation of Tra. R9002 X Tra.V149, a highly powdery mildew-resistant line W159 was selected according to its chromosome number 2n = 41 approx 42. In the F_6 line W159-9 which was immune to powdery mildew, one pair of rye chromosome and one pair of wheat-H. villosa translocated chromosome were identified simultaneously by multicolor fluorescence genomic in situ hybridization in the wheat genetic background (chromosome number 2n = 42). Through C-banding and a sequential C-banding analysis after genomic in situ hybridization, the rye chromosome were identified as 5R and the wheat-H. villosa translocated chromosome were identified as 6VS-6AL. This indicates that W159-9 carries two powdery mildew-resistant genes of Pm4 on 5R and Pm21 on 6VS. The wheat chromosome absent in W159-9 were identified as the 6AS and 5D. On the other hand, seven out of 17 progenies of another F_6 line W159-3 possessed 5R and 6VS-6AL chromosome. These materials could be used for acquiring stable multiple powdery mildew-resistance in wheat breeding programs.

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