A new stripe rust resistance gene transferred from Thinopyrum intermedium to hexaploid wheat (Triticum aestivum)

文献类型： 外文期刊

第一作者： Luo, Pei-Gao

作者： Luo, Pei-Gao;Hu, Xue-Yun;Zhang, Min;Zhang, Huai-Qiong;Ren, Zheng-Long;Chang, Zhi-Jian

作者机构：

关键词： Genetic resistance;intermediate wheatgrass;Puccinia striiformis f. sp tritici;Thinopyrum intermedium;wheat

期刊名称：PHYTOPROTECTION （ 影响因子：0.333； 五年影响因子：0.429 ）

ISSN： 0031-9511

年卷期： 2009 年 90 卷 2 期

页码：

收录情况： SCI

摘要： Wheat stripe rust (Puccinia striiforisf. sp. tritici) races CYR31 and CYR32, prevalent in China, are virulent to many wheat stripe rust resistance genes (Yr genes). To expand the availability of effective resistance to CYR31 and CYR32, stripe rust resistance was transferred from intermediate wheatgrass (Thinopyrum intermedium) to common wheat (Triticum aestivum). The susceptible wheat cultivar CM107 was crossed with amphiploid TAI7047, derived from the wide cross Taiyuan768/Thinopyrum intermedium//76(64). Two wheat lines originating from the cross, YU24 and YU25, were resistant to CYR31 and CYR32. Pedigree analysis showed that the resistance to stripe rust in YU24 and YU25 originated from intermediate wheatgrass. Genetic analyses indicated that the resistance to stripe rust is controlled by a single dominant gene. Allelic tests determined that the resistance gene(s) in YU24 and YU25 are identical. The new gene has temporarily been designated as YrYU25. SSR and RAPD analyses showed that YrYU25 was introduced by cryptic translocation into common wheat.

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