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首页> 外文期刊>Journal of genetics >Introgression and genetic mapping of leaf rust and stripe rust resistance in Aegilops triuncialis
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Introgression and genetic mapping of leaf rust and stripe rust resistance in Aegilops triuncialis

机译：Aegilops triuncialis叶片锈病和条纹耐锈抗性的旋气和遗传映射

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The growing and cultivating resistant wheat crop varieties is important to meet the demands of the growing population andminimizing the yield losses due to foliar diseases. More important is the identification of novel resistance sources and transfer of resistancein ready to use form. In the current study, leaf rust (LR) and stripe rust (YR) resistant tetraploid nonprogenitors of wheat Aegilops triuncialis (UtUtCtCt) acc pau 3462 was crossed and backcrossed susceptible cultivar WL711(NN) by inducing homeologous pairing using CS ph1.Recurrent parent type plants were selected in subsequent generation with resistance to LR and YR and BC$_{2} $F$_{7} $ introgression line (2 n =42)named ILtri have been developed. To understand the nature and inheritance of LR and YR resistance genes and to map their genomiclocation, F$_{2} $ and F$_{2:3 } $ mapping populations were developed by crossing ILtri with WL711(NN). In F$_{2} $ and F$_{2:3 } $, the seedlings and adult plantssegregated into 3R:1S and 1HR:2Seg:1HS ratios, respectively for both LR and YR, indicating inheritance of single dominant all stageresistance gene working against both the rusts. These genes were temporary designated as Lrtri and Yrtri and were inherited independently.Molecular mapping of 614 SSR markers mapped the Lrtri at a distance of 11.2 cM from SSR marker Xwmc606 .
机译：抗性和培养的小麦作物品种对于满足人口不断增长的需求，致力于造成叶面疾病的需求。更重要的是鉴定准备使用形式的新抗性来源和抵抗的转移。在目前的研究中，通过使用CS pH1.Recurrent母体类型诱导自主配对，在小麦aegilops triuncialis（Ututctct）rituncialis（Ututctct）Acc Pau 3462的叶锈（LR）和条纹锈病（Yr）抗性四倍体非血管3462在随后的生成中选择了植物，具有对LR和Yr的抵抗力，并且BC $ _ {2} $ F $ _ {7} $ introgression线（2 n = 42）已开发出名为ILTRI。要了解LR和Yr抗性基因的性质和遗传和映射它们的GenomicLocation，F $ _ {2} $和F $ _ {2：3} $绘制群体是通过与WL711（NN）交叉ILTRI而开发的。在F $ _ {2} $和F $ _ {2：3} $，幼苗和成人植物分为3r：1s和1小时：2seg：1HS比率，分别用于LR和YR，表明所有STERTESISTANCE的遗传基因对抗铁锈的工作。这些基因被临时指定为LRTRI和Yrtri，并且独立地遗传。614个SSR标记的分子映射在来自SSR标记XWMC606的距离11.2cm的距离下映射了LRTRI。

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