研究检出66份青海小麦叶锈病抗性基因分布规律
来源:《西北农业学报》 时间:2018/10/08

 

 

 

小麦叶锈病作为小麦的三大锈病之一,是由小麦叶锈菌(Puccinia tirticina)引起的真菌病害,对小麦生产具有极大的威胁,严重爆发时可使小麦减产50%,而研究培育小麦叶锈病抗病品种是小麦生产上最为经济和安全有效的方法。但是,全面的了解目前生产小麦品种的抗叶锈性及其所含有的抗叶锈基因、发掘新的叶锈病抗源又是培育出抗性品种的一个前提条件。

在中国科学院战略性A类先导科技专项子课题和青海省重点研发与转化计划项目的支持下,中国科学院西北高原生物研究所张怀刚研究员带领的团队采用6个抗叶锈基因对青海省审定的66个小麦品种进行检测,相关研究结果发布在最新出版的《西北农业学报》(Acta Agriculturae Boreali-occidentalis Sinica)上。

其结果显示,其中有16个品种含抗叶锈基因Lr118个品种含抗叶锈基因Lr2431个品种含抗叶锈基因Lr29,占到分析品种数的45.59%5个品种含抗叶锈基因Lr3423个小麦品种含抗叶锈基因Lr42;未检测到抗叶锈基因Lr9。另外,他们还发现同时含有两种抗叶锈基因的小麦品种有17份,占分析品种数的25%,同时含有三种抗性基因的品种有8份,占检测品种数的12.12%,同时含有四种或四种以上抗性基因的品种仅1份,为品种青春254”

今后,小麦育种工作者将依据这66份小麦品种叶锈病抗性基因分布情况,有针对性地进行小麦叶锈病抗性育种工作。(来源:生物谷Bioon.com

 

Molecular Identification of Leaf Rust Resistance Genes in Bread Wheat Cultivars Released in Qinghai Province

 

Abstract  To analyze the distribution of leaf rust resistance genes in 66 bread wheat cultivars which were released in Qinghai Province,six molecular markers of leaf rust resistance genes ( Lr1, Lr9, Lr24, Lr29, Lr34, Lr42) were applied to test 66 wheat cultivars. Of the 66 Qinghai released cultivars,16 cultivars carry Lr1gene;0 cultivars carry Lr9gene;18 cultivars carry Lr24 gene; 31 cultivars carry Lr29 gene; 5 cultivars carry Lr34 gene; and 23 cultivars carry Lr42 gene; accounting for 24.24%,0%,27.27%,46.97%,7.58% and 34.85% of the detected samples,respectively. Meanwhile,17 samples contain two resistance genes,accounting for 25.76%;9 samples contain three resistance genes,accounting for 13.64%; only ‘Qingchun 254’ contain four resistance genes. The distribution of Leaf Rust Resistance Genes in 66 wheat cultivars in Qinghai province provides the resources of resistance gene and has potential value for improving the resistance of leaf rust by pyramiding leaf rust resistant genes.

 

原文链接:http://xbnyxb.alljournals.cn/ch/reader/create_pdf.aspx?file_no=20180805&flag=1&journal_id=xbnyxb&year_id=2018

 

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