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首页> 外文会议>International Symposium on Wheat Improvement for Scab Resistance May 5-11, 2000, Suzhou and Nanjing, China >TRANSFER SCAB RESISTANCE FROM LEYMUS RACEMOSUS, ROEGNERIA CILIARISy AND ROEGNERIA KAMOJI INTO COMMON WHEAT
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TRANSFER SCAB RESISTANCE FROM LEYMUS RACEMOSUS, ROEGNERIA CILIARISy AND ROEGNERIA KAMOJI INTO COMMON WHEAT

机译：莱姆氏菌，刺槐属和刺槐属间的抗结垢性转移到普通小麦中

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摘要

Species related to wheat, Roegneria ciliaris, R. kamoji, and Leymus racemosus, with scab resistance were crossed and then backcrossed to common wheat. Three T, aestivum-L. racemosus, one T, aestivum-R ciliaris, and one T. aestivum-R. kamoji addition lines with scab resistance were selected and identified in the progenies through mitotic and meiotic analysis, C-banding, and FISH combined with scab screening. Translocations were induced by means of irradiation, gametocidal chromosome effects, Ph'-gene induced chromosome pairing, and tissue culture. A total of 36 lines with translocated chromosomes between L. racemosus and wheat were obtained. C-banding and FISH techniques were used to identify the alien chromosome and chromosome segments. Their homoeologous relationships with wheat chromosomes were determined by RFLP analysis. The scab-resistance genes were primarily located on L. racemosus chromosomes 5Lr#1, 7Lr#1, and ?Lr#1; R. ciliaris chromosome 2S~c; and R. kamoji chromosome 1R~(ts). To increase the level of resistance and broaden the gene sources, crosses between lines with resistance genes of different origin were made. Some resistant lines with good agronomic traits have been developed and are being used for wheat improvement and genetic studies.
机译：将与小麦，Roegneria ciliaris，R。kamoji和Leymus racemosus有关的，具有抗结ab性的物种杂交，然后回交至普通小麦。三个T，小麦-L。消旋，一个T，小麦-R纤毛和一个T. aestivum-R.通过有丝分裂和减数分裂分析，C带和FISH结合结sc筛选，在后代中选择了具有结ab抗性的kamoji添加系并在后代中进行鉴定。易位是通过辐射，杀配子染色体效应，Ph'基因诱导的染色体配对和组织培养来诱导的。共获得了36个在种间乳杆菌和小麦之间具有易位染色体的品系。使用C带和FISH技术鉴定外来染色体和染色体片段。通过RFLP分析确定它们与小麦染色体的同源关系。抗结ab的基因主要位于消旋乳酸杆菌染色体5Lr＃1、7Lr＃1和ΔLr＃1上。 R.纤毛染色体2S〜c;和R. kamoji染色体1R〜（ts）。为了提高抗性水平并拓宽基因来源，对具有不同起源的抗性基因的品系进行了杂交。已经开发了一些具有良好农艺性状的抗性品系，并将其用于小麦改良和遗传研究。

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