Abstract: The resistances of 104 and 49 indica inbred rice varieties against rice false smut （Ustilaginoidea virens） were evaluated by artificial inoculation and natural nursery infection during 2010-2013 in Guangdong Province. There were 3, 23, 10, 8, 6, and 54 varieties showed high resistant（HR）, resistant（R）, moderately resistant（MR）, moderately susceptible（MS）, susceptible（S） and high susceptible（HS） respectively by artificial inoculation in greenhouse, the overall R/S ratio was 34.6/65.4. There were 5, 8, 8, 16, 6 and 6 varieties showed HR, R, MR, MS, S and HS respectively by natural infection in nursery, the overall R/S ratio was 42.9/57.1. Both results showed that there were significant differences of resistance against rice false smut in 57 registered varieties in Guangdong, the overall R/S ratio was 19.3/80.7, varieties such as  Guangyan no.1, Huahang no.31, Jiafuzhan, Yuxiangyouzhan, Guangluai no.4, Qifozhan and Yuexiangzhan showed good resistance. The results will provide a basis for disease control and resistance breeding against rice false smut in Guangdong province.

Key words: inbred rice, rice false smut, resistance evaluation, Guangdong Province

摘要： 2010-2013年采用温室人工注射接种方法和病圃自然诱发法分别鉴定了104个和49个常规稻品种对稻曲病的抗性。温室人工接种抗性评价结果表明，高抗、抗、中抗、中感、感、高感的品种（品系）分别有3个、23个、10个、8个、6个、54个，总体抗感比为34.6∶65.4；病圃自然诱发抗性评价结果表明，高抗、抗、中抗、中感、感、高感的品种（品系）分别有5个、8个、8个、16个、6个、6个，总体抗感比为42.9∶57.1。两个试验结果表明，水稻品种间对稻曲病的抗性有着显著的差异，其中鉴定的品种中有57个是广东历年审定的常规稻品种，总体抗感比为19.3∶80.7，测试品种中大多是感稻曲病的品种，对稻曲病表现良好抗性品种有广盐1号、华航31号、佳辐占、玉香油占、广陆矮4号、七佛占、粤香占等。本研究结果为广东稻区稻曲病防控以及抗病品种的选育应用提供了依据。

关键词: 常规稻, 稻曲病, 抗性评价