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首页> 外文期刊>Phytoprotection >A new stripe rust resistance gene transferred from Thinopyrum intermedium to hexaploid wheat (Triticum aestivum).
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A new stripe rust resistance gene transferred from Thinopyrum intermedium to hexaploid wheat (Triticum aestivum).

机译：一个新的抗条锈病基因从中间发霉（Thinopyrum intermedium）转移到六倍体小麦（Triticum aestivum）。

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摘要

Wheat stripe rust (Puccinia striiforis f 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 CM 107 was crossed with amphiploid TAI7047, derived from the wide cross Taiyuan768/Thinopyrum intermedium//76(6A). 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.
机译：CYR31和CYR32族（中国普遍存在）的小麦条锈病（ Puccinia striiforis f。sp。 tici ）对许多小麦条锈病抗性基因（ Yr 基因）。为了扩大对CYR31和CYR32的有效抗性，将条锈病抗性从中间小麦草（ Thinopyrum intermedium ）转移到普通小麦（ Triticum aestivum ）。易感的小麦品种CM 107与二倍体TAI7047杂交，该二倍体TAI7047来自宽杂交种Taiyuan768 / Thinopyrum intermedium // 76（6A）。源自该杂交的两个小麦品系YU24和YU25对CYR31和CYR32具有抗性。家谱分析表明，YU24和YU25的抗条锈病起源于中间的小麦草。遗传分析表明，对条锈病的抗性由单个显性基因控制。等位基因测试确定YU24和YU25中的抗性基因相同。该新基因已临时命名为 YrYU25 。 SSR和RAPD分析表明， YrYU25 是通过隐蔽易位引入普通小麦的。

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