中国菊科一新归化属——软金菀属
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1.江西农业大学林学院;2.上饶市林业科学研究所;3.江西农业大学国土资源与环境学院

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农业部财政项目:外来物种普查与监测(050014/9021108959) ,农业部财政项目:农业外来入侵物种发生危害及扩散风险等调查(13220142),国家自然科学基金项目:国产安息香属(安息香科)的分类学研究(31960043)。


Bradburia (Asteraceae), a Newly Naturalized Genus in China
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    摘要:

    报道了发现于南昌的中国菊科植物一新归化属种—软金菀属Bradburia?Torr. & A.Gray和柔毛软金菀(新拟)B. pilosa?(Nutt.) Semple。基于核基因(ITS)构建的系统发育树确定了软金菀属的系统发育位置,即与金菀属Chrysopsis (Nuttall) Elliot互为近缘属。与金菀属相比,该属的主要特征为茎具柔毛或糙毛,基生叶具柄或近无柄,头状花序单生。柔毛软金菀与该属其他种相比,主要特征为植株密被柔毛,基生叶宿存且近无柄,舌状花和管状花均具两层冠毛且内层冠毛的长度是外层冠毛的5-10倍。该种最初于2015年在南昌市昌北机场出现,可能由临时经停此处的北美一航班携带而来,2022年底已经扩散到15公里外的经济技术开发区,呈现明显入侵态势。

    Abstract:

    A newly naturalized genus Bradburia Torr. & A.Gray and a newly naturalized species B. pilosa (Nutt.) Semple found in Nanchang, Jiangxi Province were both reported in China. The phylogenetic tree constructed based on nuclear gene (ITS) has determined the phylogenetic position of Bradburia, which is closely related to Chrysopsis (Nuttall) Elliot. Compared to Chrysopsis, Bradburia is recognized by its stems with pilose or hispid, basal leaves petiolate and nearly sessile and capitulum borne singly. Compared to other species of the genus, B. pilosa is recognized by its densely pilose, basal leaves persistent and nearly sessile, ray-florets and disc-florets have distinct pappi in 2 series, and the length of the inner is 5-10 times that of the outer. This species originally appeared at Changbei Airport in Nanchang in 2015 and might be brought by an unscheduled plane from a North American flight. By the end of 2022, it had spread to the economic and technological development zone 15 kilometers away, showing a significant invasion tendency.

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赵廖成,汪涛涌,肖梓暄,等.中国菊科一新归化属——软金菀属[J].西北植物学报,2023,43(9):1594-1600

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  • 收稿日期:2023-03-29
  • 最后修改日期:2023-05-17
  • 录用日期:2023-07-05
  • 在线发布日期: 2023-09-26
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