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2种质资源.ppt

发布:2017-05-19约小于1千字共34页下载文档
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Extinct species : the last remaining member of the species has died, or is presumed beyond reasonable doubt to have died. Endangered species : faces a very high risk of extinction in the near future. Critically endangered: faces an extremely high risk of extinction in the immediate future. Vulnerable species: faces a high risk of extinction in the medium-term. Gene bank:基因资源的保存场所。 分类学性状 物候期、生长发育
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