水稻品种ZH5及其杂交后代纹枯病抗性和农艺性状研究  

Studies on Sheath Blight Resistance and Biological Characters of Rice Variety ZH5 and Its Filial Generations

作　　者：黄世文[1] 王玲[1] 王全永[1] 唐绍清[1] 

机构地区：[1]中国水稻研究所

出　　处：《杂交水稻》2008年第4期7-11,共5页Hybrid Rice

基　　金：国家财政部农业行业专项(nyhyzx07-049);科技部中央级公益性科研院所专项资金(100015);农业部农业科技支撑计划(2006BAD08A04);浙江省重大项目(2006C12001);浙江省三农五方科技协作项目(SN200711)

摘　　要：以对纹枯病(Rhizoctonia solaniKühn)有良好抗性的水稻品种ZH5为母本,与对纹枯病抗性较差的泸恢17、多系1号和GR83个恢复系进行杂交,获得杂交F1、F2代,于2005—2006年在杭州田间对亲本和杂交后代进行了纹枯病抗性人工接种鉴定及植株生物学性状考查。结果表明,杂交F1代植株对纹枯病的抗性水平介于双亲之间,大多数农艺性状表现出超亲优势或介于双亲之间;同一杂交组合F2代群体内纹枯病抗性分离较大;不同杂交组合间群体内抗、感纹枯病植株分布差异较大。植株对纹枯病的抗性与株型性状相关不显著,主要决定于品种自身的抗性遗传背景。ZH5, an indica rice variety with good sheath blight （Rhizoctonia solani Kiihn）resistance, was crossed with three restorer lines Luhui 17, Duoxi 1 and GR8 with poor sheath blight resistance and their F1 and F2 progenies were obtained. From 2005 to 2006, the biological characters of the parents, F1 and F2 progenies were investigated, and their resistance to sheath blight was evaluated by artificial inoculation in rice paddy fields in Hangzhou, Zhejiang. The results indicated that the resistance levels to sheath blight of F, progenies were between their female and male parents. Most of tested biological characters of F, populations exceeded their parents or were between their parental lines. There existed a great segregation of sheath blight resistance among the individual plants of the same F2 populations, and there was also a big difference in disease resistance distribution of individual plants among different F2 populations. The correlation between the resistance to sheath blight and biological characters was not significant. The resistance level of sheath blight of rice varieties was mainly determined by their own genetic backgrounds.

关 键 词：水稻 ZH5 杂交后代 生物学特性 纹枯病抗性 

分 类 号：S435.113[农业科学—农业昆虫与害虫防治] S511.034[农业科学—植物保护]