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伞滑刃属(bursaphelenchus)属内分类研究

DOI: 10.3969/j.jssn.1000-2006.2010.04.039, PP. 173-174

Keywords: 伞滑刃属,属内分组,侧线数目,分子树

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Abstract:

目前已经报道了伞滑刃属(bursaphelenchus)内近百种线虫,其共同的形态特征是雄虫的尾部末端具有交合伞。在该属的分类中尚存在同物异名的问题。为此,基于其特征的复杂性,笔者提出根据线虫侧线的数目、尾乳突的排列、是否出现阴门盖、交合刺形状、外分泌孔及后部子宫分支的位置等特征,将该属分为7组,其中4条侧线组为xylophilus,okinawaensis,africanus,fungivorus,cocophilus,kevini和sexdentati;3条侧线组为eggersi,eremus,hofmanni,leoni;2条侧线组为abietinus和sinensis。73种列入上述分组中,24种因为缺乏形态学资料未能列入。交合刺不能用于分组。列入该分组的39种基于亚基核糖体dna数据的分子树说明了该分组的合理性。另外,parasitaphelenchinae,aphelenchoidinae和ektaphelenchinae亚科中28种线虫基于核糖体大亚基d1―d2区序列生成的分子树显示了它们在aphelenchoididae科中的系统关系。

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