On the origin and development of Artemisia (Asteraceae) in the geological past
On the origin and development of Artemisia (Asteraceae) in the geological past
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DOI：
10.1111/j.1095-8339.2004.00287.x
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发表时间：
2004-07
影响因子：
2.4
通讯作者：
Wei-Ming Wang
中科院分区：
文献类型：
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作者：
Wei-Ming Wang
化石记录结合植物地理数据表明，Artemisia L.可能起源于第三纪中期亚洲温带现有的干旱或半干旱地区。最早记录的菊科花粉粒大多具有中长刺，而蒿属的花粉粒则稍晚一些，有短刺。可以推断，后者是由前者演变而来的。花粉形态学数据证实了两种花粉模式在含有蒿属的蒿亚族中共存。该属的发育和进化表明其历史上的三个主要阶段。尽管Artemisia L.早在古近纪晚期就已出现，但直到中新世中后期才变得丰富。尽管世界各地有许多晚中新世该属的记录，但其代表性仍然很低。上新世是包括蒿在内的被子植物草本植物发展的重要时期，第四纪是该属多样化和进一步向世界范围扩展的重要时期。蒿的起源和随后的发展被认为与环境变化的加剧密切相关，包括全球气候变化和一些重要的构造运动。 © 2004 伦敦林奈学会，林奈学会植物学杂志，2004, 145, 331–336。
Fossil records combined with phytogeographical data reveal that Artemisia L. possibly originated from the existing arid or subarid area of temperate Asia in the mid-Tertiary. The earliest recorded Asteraceae pollen grains are mostly ornamented with medium to long spines, whereas Artemisia L. with short spinules is recorded slightly later. It may be deduced that the latter evolved from the former. Pollen morphological data confirm the coexistence of the two pollen patterns in the subtribe Artemisiinae containing Artemisia L. The development and evolution of the genus suggest three major stages in its history. Artemisia L. did not become abundant until the Middle to Late Miocene in spite of its earlier presence in the Late Palaeogene. Its representation remained low even though there are many records of the genus in the Late Miocene around the world. The Pliocene was an important time for the development of angiosperm herbs including Artemisia L., and the Quaternary has been a major period for the diversification and further worldwide expansion of the genus. The origin and subsequent development of Artemisia L. are considered to be closely related with increased environmental variation, including global climate changes and some important tectonic movements. © 2004 The Linnean Society of London, Botanical Journal of the Linnean Society, 2004, 145, 331–336.