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为发掘抗黑条矮缩病水稻种质资源,收集15个省份共251份地方品种进行抗黑条矮缩病田间诱发鉴定。结果表明,251个品种中发病率在10%~40%的品种占66.5%,发病率低于10%的品种32个,低于5%的仅11个,未出现对黑条矮缩病免疫的品种。167个籼稻品种中,26个品种发病率低于10%,而粳稻品种中仅有6个。安徽、江苏、江西和浙江4省筛选出的抗性品种较多,发病率低于10%的品种有20个,低于5%的品种有11个。广东、广西、湖南、台湾、云南和福建6省区鉴定品种中,发病率低于10%的品种仅有12个,未发病率低于5%的品种。另外,黑龙江、吉林、辽宁、山东和四川5省区未出现发病率低于10%的品种,这些地区在抗黑条矮缩病水稻育种中应注重其它地区抗性材料的引进。本研究结果将为研究水稻黑条矮缩病和抗黑条矮缩病育种提供重要信息。
In order to find rice germplasm resources resistant to black-streaked dwarf disease, a total of 251 local cultivars from 15 provinces were collected for identification of resistance to black-streaked dwarf disease. The results showed that in 251 cultivars, the prevalence rate was 66.5% with 10% -40%, 32 with less than 10%, 11 with less than 5%, and no immunities against black-streaked dwarf Variety. Of 167 indica varieties, the incidence of 26 cultivars was less than 10%, compared to only 6 of japonica cultivars. There were more resistant varieties screened in Anhui, Jiangsu, Jiangxi and Zhejiang provinces, 20 were less than 10%, and 11 were less than 5%. Among the identified cultivars in Guangdong, Guangxi, Hunan, Taiwan, Yunnan and Fujian provinces, only 12 cultivars with less than 10% incidence and no less than 5% incidence were identified. In addition, there are no species with less than 10% incidence in five provinces and autonomous regions in Heilongjiang, Jilin, Liaoning, Shandong and Sichuan. In these areas, the introduction of resistant materials in other areas should be emphasized in rice breeding against black-streaked dwarf diseases. The results of this study will provide important information for the research of rice black-streaked dwarf and black-streaked dwarf disease breeding.