MA Shu-mei,HAN Xin-hua.Analysis on the Toxicity Variation and Virulence Structure of Soybean Phytophthora sojae in Heilongjiang Province[J].Soybean Science,2013,32(02):229-233.[doi:10.3969/j.issn.1000-9841.2013.02.020]
黑龙江省大豆疫霉菌毒性变异及毒力结构分析
- Title:
- Analysis on the Toxicity Variation and Virulence Structure of Soybean Phytophthora sojae in Heilongjiang Province
- Keywords:
- Soybean; Phytophthora sojae; Toxicity variation; virulence structure
- 文献标志码:
- A
- 摘要:
- 采用国外一套鉴别寄主对2009~2012年黑龙省大豆产区的疫霉菌毒性变异及毒力结构进行了系统测定。结果表明:黑龙江省大豆疫霉菌含有目前已知的全部致病基因,能克服所有已知的主效抗性基因。供试的300个疫霉菌株可分为28种毒力结构,毒力类型1a,7;6,7;7;1a,1c,6,7;1a,3c,4,6,7;1a,1d,3c,5,7;1b,1k,4,6,7是黑龙江大豆疫霉的主要组成类型,分别占测定菌株数的17%、21%、9%、7%、4%、5%、6%,前3种毒力类型在黑龙江省东部、中部和北部大豆主产区内均有分布。黑龙江大豆产区中的大豆疫霉毒力结构比较复杂,种类最多的哈尔滨和齐齐哈尔地区达到了15种。rps1k基因是重要的抗病基因,目前已经存在对它具有毒性的病原菌,并且所占比例为10.3%,表明黑龙江大豆生产区存在着疫霉菌的强毒性菌株。因此,亟需挖掘新的抗病基因和培育新的抗病资源。
- Abstract:
- A set of foreign standard soybean differentials was applied to systematically examine the virulence genes and structures of soybean Phytophthora sojae(SPS),which were isolated from soybean production regions in Heilongjiang province during 2009 to 2012.The results showed that all known virulence genes in the tested SPS strains from Heilongjiang province could overcome all known major resistance genes.Three hundred SPS strains tested were divided into 28 different virulence types.The virulence types of 1a,7;6,7;7;1a,1c,6,7;1a,3c,4,6,7;1a,1d,3c,5,7;1b,1k,4,6,7 were the predominant populations and the proportion of which were 17%,21%,9%,7%,4%,5% and 6%,respectively.Meanwhile the first three virulence types were distributed in the main soybean production regions of eastern,central and northern of Heilongjiang province.The formation of SPS virulence genes in the soybean production areas in Heilongjiang province was complex and in Harbin and Qiqihar the types of genes were up to 15 species.rps1k is an important resistance gene,there was virulent pathogens existed acting on the rps1k gene and the proportion was 10.3%,which illuminated that there were strong virulent strains of SPS in Heilongjiang soybean production areas.Thus it is urgent to discover new resistant genes and culture new resistant resources.
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备注/Memo
?国家公益性行业(农业)科研专项(3-20) 。