普通野生稻抗源对细菌性条斑病的抗性遗传分析  

Inheritance of resistance to bacterial leaf streak in four accessions of common wild rice(Oryza rufipogon Griff.)

作　　者：贺文爱[1,2,3] 黄大辉[2,4] 刘驰[4] 岑贞陆[5] 张月雄[4] 马增风[4] 陈英之[2] 卢双楠[1] 刘开勇[1] 武波[1] 李容柏[2] 

机构地区：[1]广西大学农学院,南宁530005 [2]广西农业科学院广西作物遗传改良生物技术重点开放实验室,南宁530007 [3]广西大学图书馆,南宁530005 [4]广西农业科学院水稻研究所,南宁530007 [5]广西农业科学院植物保护研究所,南宁530007

出　　处：《植物病理学报》2010年第2期180-185,共6页Acta Phytopathologica Sinica

基　　金：广西青年科学基金(桂科青0833078);广西农业科学院基本科研业务专项资助[200801Z(基);200918(基)]

摘　　要：用感细菌性条斑病品种9311为母本,4个普通野生稻抗源DY3、DY16、DY17、DY20为父本,组配了9311/DY3、9311/DY16、9311/DY17和9311/DY204个组合的F1、F2和B1C1群体。在水稻分蘖期,用广西细菌性条斑病菌优势致病型菌株JZ28,以针刺法对各世代进行接种鉴定和遗传分析。结果表明,对DY3,F2群体抗感分离比为39∶544,卡方测验x2=0.1245<x02.05,1,符合1R∶15S的理论比例;对DY16,F2群体抗感分离比为94∶343,卡方测验x2=2.655<x02.05,1,符合1R∶3S的理论比例;对DY17,F2群体抗感分离比为41∶501,卡方测验x2=1.382<x20.05,1,符合1R∶15S的理论比例;对DY20,F2群体抗感分离比为43∶489,卡方测验x2=2.745<x02.05,1,符合1R∶15S的理论比例。结合各个组合F1和B1C1植株对细菌性条斑病表现为感至高感,据此推知DY3、DY17、DY20的抗性由2对隐性抗性基因控制;DY16的抗性由1对隐性抗性基因控制。The F1 , B1C1 and F2 populations derived from bacterial leaf streak （Xanthomonas oryzae pv. oryzicola） susceptible variety 9311 crossed with 4 wild rice resistant accessions DY3, DY16, DY17 and DY20 were used for genetic analysis by pricking inoculation with Guangxi prevailing strain JZ28 at the tillering stage. The results showed that the segregation ratio of resistance to susceptibility was 39：544 in F2 generation from cross 9311/DY3, fitting the expected ratio of 1R： 15S （x^2 =0.124 5 〈 x^20.05,1 ）. The segregation ratios in F2 generation from 9311/DY16, 9311/DY17 and 9311/DY20 were 94： 343, 41：501 and 43： 489, fitting the expected ratio of 1R：3S （x^2 =2.655〈x^20.05,1）, 1R：15S （x^2 =1.382〈X0.05,1） and 1R：15S （x^2 =2.745〈x^2 0.05,1 ）, respectively. In addition, all plants of the F1 and B1C1 generations were susceptible or highly susceptible to bacterial leaf streak. The results of present study indicated that the resistance conferred by DY3,DY17, DY20 to bacterial leaf streak was controlled by two pairs of recessive genes, and the resistance possessed by DY20 was controlled by a single recessive gene.

关 键 词：普通野生稻 细菌性条斑病 抗性 遗传 

分 类 号：S435.47[农业科学—农业昆虫与害虫防治]