广西野生稻稻瘟病抗性鉴定及抗源地理分布  

Blast resistance identification for wild rice from Guangxi and geographical distribution of resistant resources

作　　者：陈灿[1] 郭辉[1] 张晓丽[1] 刘百龙[1] 秦学毅[1] 冯锐[1] CHEN Can;GUO Hui;ZHANG Xiao-li;LIU Bai-long;QIN Xue-yi;FENG Rui(Rice Research Institute,Guangxi Academy of Agricultural Science/Guangxi Key Laboratory of Rice Genetics and Breeding,Nanning 530007,China)

机构地区：[1]广西农业科学院水稻研究所/广西水稻遗传育种重点实验室,南宁530007

出　　处：《南方农业学报》2017年第11期1999-2003,共5页Journal of Southern Agriculture

基　　金：国家自然科学基金项目(31560385);广西自然科学基金项目(2015GXNSFAA139060);广西科学研究与技术开发计划项目(桂科AB16380138);广西农业科学院科技发展基金项目(2015JM06)

摘　　要：【目的】明确广西野生稻对稻瘟病的抗性,为水稻抗瘟育种和挖掘抗瘟基因提供抗源材料。【方法】采用人工接种鉴定方法分别在苗期和孕穗期对广西野生稻进行稻瘟病混合菌株(ZA1、ZB1、ZB15和ZC15)接种,调查不同野生稻材料对叶瘟和穗颈瘟的抗性级别,统计抗感材料,并依据抗病材料地理来源进行统计分析。【结果】从普通野生稻中鉴定出抗叶瘟材料188份、抗穗颈瘟材料9份,占比分别为11.85%和0.58%;从药用野生稻中鉴定出抗叶瘟材料73份、抗穗颈瘟材料5份,占比分别为36.68%和2.54%;从普通野生野和药用野生稻中分别鉴定出兼抗叶瘟和穗颈瘟的材料9和4份,占比分别为0.58%和2.03%。贵港和梧州等地是广西野生稻抗稻瘟病材料最多的地区。【结论】广西野生稻抗叶瘟资源较丰富,但抗穗颈瘟或兼抗叶瘟、穗颈瘟的资源较匮乏,需进一步挖掘抗穗颈瘟及兼抗叶瘟和穗颈瘟材料。【Objective】Resistance of wild rice in Guangxi to blast was studied to provide new resistant materials for breeding blast resistant rice and exploring blast resistant genes.【Method】Identification method of artificial inoculation was adopted to inoculate wild rice from Guangxi with rice blast mixed strains ZA1,ZB1,ZB15and ZC15at seedling stage and booting stage.Resistance of different wild rice materials to leaf blast and panicle blast was investigated,resistant and sensitive materials were counted.Statistic analysis was carried out based on the geographic origins of resistance materials.【Result】Out of the common wild rice materials,188materials were found to be resistant to leaf blast and nine materials were resistant to panicle blast,accounting for11.85%and0.58%respectively of the total;73materials were found to be resistant to leaf blast and five materials were resistant to panicle blast from medicinal wild rice,accounting for36.68%and2.54%respectively of the total;nine materials from common wild rice and four materials from medicinal wild rice were found to be resistant to both leaf blast and panicle blast,accounting for0.58%and2.03%respectively of the total.Guigang and Wuzhou were areas where the most wild rice blast resistant materials in Guangxi were found.【Conclusion】There are abundant wild rice resources with resistance to leaf blast in Guangxi,but lack resources with resistance to panicle blast or to both leaf blast and panicle blast.So resources with resistance to panicle blast and resistance to both leaf blast and panicle blast should be further explored.

关 键 词：野生稻 稻瘟病 抗性 地理分布 广西 

分 类 号：S435.119[农业科学—农业昆虫与害虫防治]