摘要
甘蔗褐锈病是一种重要的世界性甘蔗病害,可造成巨大的经济损失。为明确甘蔗属长齿蔗茅‘云滇95-19’和‘云滇95-20’对甘蔗褐锈病的抗性遗传规律,采用自交方法分别获得‘云滇95-19’和‘云滇95-20’自交F 1代,对亲本及其自交F 1代进行了抗褐锈病基因Bru 1的检测和褐锈病抗性鉴定。研究结果表明,‘云滇95-19’和‘云滇95-20’及其自交F 1代均未检测到Bru 1基因,两个自交F 1代群体对褐锈病的抗性均出现了明显的3∶1的分离比,证实了‘云滇95-19’和‘云滇95-20’对甘蔗褐锈病的抗性均由一对新的显性基因控制。本研究为挖掘和利用长齿蔗茅抗褐锈病基因资源奠定了基础,对今后抗褐锈病品种的选育具有重要意义。
Sugarcane brown rust is an important global disease,causing severe economic losses.In order to clarify the resistance inheritance of Saccharum longesetosum‘Yundian 95-19’and‘Yundian 95-20’to sugarcane brown rust,the self-bred F 1 populations of‘Yundian 95-19’and‘Yundian 95-20’were obtained,respectively.The parents and their self-bred F 1 individuals were used for detection of Bru 1 gene and their resistance to sugarcane brown rust.The results showed that the Bru 1 gene was not detected in the‘Yundian 95-19’‘Yundian 95-20’and their self-bred F 1 individuals.The segregation ratio of resistance to sugarcane brown rust showed an obvious 3∶1 in two self-bred F 1 populations.The results confirmed that the resistance of both‘Yundian 95-19’and‘Yundian 95-20’to sugarcane brown rust is controlled by a new pair of dominant gene,respectively.The above results laid a foundation for exploit and utilize the gene resources resistant to sugarcane brown rust,and it is of great significance for breeding resistant varieties in the future.
作者
张荣跃
李文凤
黄应昆
陆鑫
王晓燕
单红丽
李婕
仓晓燕
尹炯
罗志明
ZHANG Rongyue;LI Wenfeng;HUANG Yingkun;LU Xin;WANG Xiaoyan;SHAN Hongli;LI Jie;CANG Xiaoyan;YIN Jiong;LUO Zhiming(Sugarcane Research Institute,Yunnan Academy of Agricultural Sciences,Yunnan Key Laboratory of Sugarcane Genetic Improvement,Kaiyuan 661699,China)
出处
《植物保护》
CAS
CSCD
北大核心
2020年第6期178-182,共5页
Plant Protection
基金
国家自然科学基金(31660419)
国家现代农业产业技术体系(糖料)建设专项(CARS-170303)
云岭产业技术领军人才培养项目(2018LJRC56)
云南省现代农业产业技术体系建设专项。
关键词
长齿蔗茅
甘蔗褐锈病
遗传分析
抗病基因
Saccharum longesetosum
sugarcane brown rust
genetic analysis
resistance gene
