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收集大豆抗大豆花叶病(SMV)抗源和鉴别寄主40份,通过接种Cho和Goodm an划分的抗大豆花叶病毒株系SMV G1-G7,了解这些材料对该株系的抗性反应。同时比较了其中部分材料对中国学者划分的SMV Sc1-Sc17株系的抗性反应。结果感病材料无论对SMV G1-G7株系,还是SMV Sc1-Sc17株系均表现感病;但是,齐黄1、科丰1、早18和8101等对SMV G1-G7株系均表现抗病的材料,对SMV Sc1-Sc17株系却表现出部分抗病;而另外一些材料,如:诱变30、徐豆1、文丰5、铁6915、齐黄10和Harosoy等对SMV G1-G7株系的抗性反应却与北美的鉴别寄主相同。结果表明:无论是对SMV G1-G7株系,还是对SMV Sc1-Sc17株系,抗病材料的抗性遗传基础是相似的;中国一些大豆花叶病毒株系的致病力强于国外的株系。因此,结合国外的SMV株系鉴定系统,创建一套统一的SMV株系鉴定系统是可行的。
Forty copies of soybean resistant to soybean mosaic (SMV) were screened for resistance to and identification of hosts. Inoculation of SMV G1-G7 resistant to soybean mosaic virus (SMV G1-G7) by Cho and Goodman revealed the resistance of these materials to this strain. At the same time, some of the materials were compared with the SMV Sc1-Sc17 lines classified by Chinese scholars. Results The susceptible material showed susceptibility to both SMV G1-G7 and SMV Sc1-Sc17 strains; however, Qihuang 1, Kefeng 1, Zao 18 and 8101 all showed resistance to SMV G1-G7 strain However, some other materials, such as mutagen 30, xudou 1, wenfeng 5, iron 6915, Qihuang 10 and Harosoy, showed no resistance to SMV G1-Sc17, The resistance of the G7 line was the same as that of the North American host. The results showed that the genetic basis of disease resistance of SMV G1-G7 strain and SMV Sc1-Sc17 strain was similar. The pathogenicity of some soybean mosaic virus strains in China was stronger than that in other countries Strain. Therefore, it is feasible to establish a unified SMV strain identification system by combining the foreign SMV strain identification system.