以25 个鹰嘴豆品系为试验材料,通过叶面喷雾的方式进行Ascochyta rabiei菌悬液室内外人工接种,评价不同鹰嘴豆种质资源的抗病性;同时利用RAPD方法进行基因型鉴定,采用NTSYSpc 2.10t软件对分子标记结果进行遗传相似性的统计分析并建立各品系间的亲缘关系聚类图,探讨不同鹰嘴豆品系对A.rabiei抗性与遗传多态性间的关系。通过室内和田间鹰嘴豆抗A.rabiei鉴定结果综合分析表明:在25个鹰嘴豆供试品系中,“系选 03”和“216”品系均表现出稳定抗性特性;北园春品系表现出稳定中抗特性。通过RAPD多态性引物对这25 个供试品系进行PCR扩增,共获得129 个扩增条带,其中多态性条带共有67 条,多态性比例达51.94%,遗传相似系数为0.3731-0.9254。结合抗病性和遗传多态性,经方差分析表明,本研究所采用的鹰嘴豆品系对A.rabiei的抗性强弱与其遗传相似性之间无显著相关性。
The study aimed to evaluate the Ascochyta blight resistance of 25 chickpea varieties through artificial inoculation by Ascochyta rabiei spore suspension both in lab and outdoors. At the same time, the genotype of these chickpea varieties’ were identified by RAPD amplification and the genetic relationship among these chickpea varieties were analyzed by NTSYSpc 2.10t software. Results of resistance identification showed that: “xixuan 03” and “216” have a stable R level of resistance and “beiyuanchun” has a MR level of resistance to Ascochyta blight respectively. In genetic relationship analysis by RAPD amplification: 129 DNA bands were amplified from these 25 chickpea varieties in total, 67 of these 129 bands were polymorphic, and the ratio of polymorphic fragments was about 51.94%. Genetic similarity coefficient among these 25 chickpea varieties were 0.3731-0.9254. Combined with disease resistance identification results and genetic polymorphism analysis, there were no significant relevance between the resistance to Ascochyta blight and the genetic relationship of these tested chickpea varieties by analysis of variance.
马丽娟,张巨松,李利民,等.鹰嘴豆种质资源对Ascochyta rabiei的抗性评价及遗传多态性分析[J].植物遗传资源学报,2013,14(6):1179-1184.
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