云南疣粒野生稻抗白叶枯病多菌系鉴定分析  

Identification of Broad-spectrum Resources against Rice Bacterial Blight from Oryza meyeriana

作　　者：邢佳鑫[1] 陈玲[2] 柯学[2] 钟巧芳[2] 张敦宇[2] 付坚[2] 陈越[2] 肖素勤[2] 王玲仙[2] 王波[2] 殷富有[2] 陈丽娟[1] 程在全[2] XING Jiaxin;CHEN Ling;KE Xue;ZHONG Qiaofang;ZHANG Dunyu;FU Jian;CHEN Yue;XIAO Suqin;WANG Lingxian;WANG Bo;YIN Fuyou;CHEN Lijuan;CHENG Zaiquan(College of Agronomy and Biotechnology,Yunnan Agricultural University,Kunming 650201,China;Biotechnology and Germplasm Resources Institute,Yunnan Academy of Agricultural Sciences/Yunnan Provincial Key Lab of Agricultural Biotechnology/Key Lab of Southwestern Crop Gene Resources and Germplasm Innovation,Ministry of Agriculture and Rural Affairs,Kunming 650205,China)

机构地区：[1]云南农业大学农学与生物技术学院,昆明650201 [2]云南省农业科学院生物技术与种质资源研究所/云南省农业生物技术重点实验室/农业农村部西南作物基因资源与种质创制重点实验室,昆明650205

出　　处：《中国稻米》2020年第3期34-42,共9页China Rice

基　　金：科技部育种专项(2017YFD0100202);云南省农业基础研究联合专项(2017FG001-007,2017FG001-023);国家自然科学基金(31560384);云南省科技计划项目(2016RA002)。

摘　　要：水稻白叶枯病是主要的稻作病害之一。相关研究表明,疣粒野生稻高抗白叶枯病,甚至对白叶枯病免疫。为了探索病原菌发生变异情况下,疣粒野生稻抗性的变化情况,本研究利用收集的24个国内外白叶枯病菌系,采用孕穗期剪叶接种的方法,鉴定并评价了36份云南疣粒野生稻的抗病性。结果表明,参试的大部分材料表现为典型的白叶枯病症状,病斑为褐色,病斑长度0.00~0.30 cm;供试材料整体抗性水平较好,44.44%的材料对24个菌株抗性达到了高抗甚至免疫水平,其中,OM2-1在抗性和抗谱方面均表现最优;从居群来说,除景洪景讷和勐海勐往2个居群外,其余居群的抗性达到高抗甚至免疫的程度,耿马孟定的野生稻抗性表现最优;另外,大部分参试的疣粒野生稻杂合度高,同一居群的不同材料对白叶枯病的抗性差异大。Bacterial blight is one of the major rice diseases. Relevant studies showed that Oryza meyeriana has high resistance and even immune to bacterial blight. In order to explore the resistance of Oryza meyeriana on the different pathogens, 36 representative materials were evaluated by inoculating with 24 bacterial blight bacteria lines collected from China and abroad. The results showed that most of the tested materials showed typical symptoms of bacterial blight, and the lesions were brown spots with a lesion length of0.00~0.30 cm. The overall resistance level of the tested materials was good, 44.44% of the materials reached high resistance and even immune level to 24 strains. Among them, OM2-1 is the best in both resistance and resistance spectrum. In terms of population, the resistance phenotype of other populations except Jinghong Jingne and Menghai Mengwang reached high resistance and even immunity,especially the population of Gengma Mengding had the best resistance. Furthermore, most of the tested materials had high heterozygosity, and the resistance of different materials in the same population to bacterial blight varied greatly.

关 键 词：白叶枯病 疣粒野生稻 抗病性 鉴定评价 

分 类 号：S511.037[农业科学—作物学] S435.111.47