摘要
为明确广西水稻主导品种对稻瘟病的抗性水平,分别在广西岑溪、三江、永福设立了三个自然诱发病圃,通过采用苗期室内人工喷雾接种和病圃自然诱发的方法鉴定了45个主导水稻品种的抗谱及病区田间抗性.室内抗谱测定结果显示,供试的45个水稻主导品种抗性频率在8.33％～94.44％之间,抗性频率在80％以上的有8个,占鉴定总数的17.78 ％;50％～80％之间的有11个,占总数的24.44％;50％以下的有26个,占57.78％.两年病圃鉴定结果表明,45个水稻主导品种稻瘟病的抗性水平较差,无中抗水平以上抗性品种;2010年,表现中感的有26个,占总数的57.78％,表现感病的有12个、高感7个,分别占26.67％、15.56％;2011年,表现中感的有16个,占总数的35.56％,表现感病的有23个、高感6个,分别占51.11％、13.33％.45个水稻主导品种总体抗性水平呈逐年下降的趋势,在生产上应合理使用.
In order to clear the resistance of leading rice varieties in Guangxi to rice blast,three natural blast nurseries were respectively established in Cenxi,Sanjiang and Yongfu.The resistance of 45 leading rice varieties in Guangxi province to rice blast were assayed under the condition of spray inoculating and nature induce.The result showed that,the resistance frequency was between 8.33 and 94.44 ％.Resistace frequency of 8 varieties were higher than 80 ％ （17.78 ％）,11 vareties were 50 ％-80 ％ （24.44 ％）,26 varieties were lower than 50 ％ （57.78 ％）.None of 45 leading rice varieties showed resistance to rice blast in natural blast nurseries.In 2010,26 varieties showed intermediate susceptibility,which occupied 57.78 ％.12 varieties with the proportion of 26.67 ％ showed susceptibility,and other 7 varieties with the proportion of 15.56 ％ showed high susceptibility to rice blast.In 2011,there were 16 middle-susceptible varieties,23 susceptible varieties and 6 highly susceptible varieties with the ratio of 35.56 ％,51.11％ and 13.33 ％,respectively.These varieties should be used properly in rice production.
出处
《西南农业学报》
CSCD
北大核心
2014年第5期1924-1928,共5页
Southwest China Journal of Agricultural Sciences
基金
广西农科院基本科研业务专项(桂农科2013YM20
桂农科2014YZ24)
广西农业重点科技计划项目(2010009)
国家科技支撑计划项目(2012BAD19B03)
广西创新团队建设岗位专家经费资助
广西"特聘专家"专项经费
关键词
水稻主导品种
稻瘟病
抗性评价
广西
Leading rice varieties
Rice blast
Resistance evaluation
Guangxi
