花粉特征在壳斗科栎属鉴定和系统学中的应用:新数据和对已有概念的验证

IF 2.3 2区 生物学 Q2 PLANT SCIENCES Botanical Journal of the Linnean Society Pub Date : 2023-06-08 DOI:10.1093/botlinnean/boad001
M. Tekleva, S. Polevova, N. Naryshkina
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引用次数: 1

摘要

栎属(栎属)是一个大型而重要的木本被子植物属,分布于广泛的环境中,在北半球的温带森林中通常占据主导地位,在一些亚热带和热带森林中则是次要组成部分。分散在化石中的橡树花粉的可靠测定需要结合光、扫描电子(SEM)和透射电子显微镜(TEM)研究以及现存橡树物种的相关比较数据。我们提供了22种现存栎属的SEM和TEM数据,代表了该属的所有部分。我们研究的主要目的是澄清所谓的膝状突起的性质,这是在许多橡树物种中发现的一种特征性的colpus外壁赤道凸起,并检验之前关于Quercus外壁结构基本单元的假设。我们对几种Quercus sp.和一种Trigonobalanus sp.进行了个体遗传学研究和氧化实验,从而更准确地解释了膝和外壁元素的性质、它们的不同发育状态,从而更可靠地应用于Quercus属和壳斗科的系统学和进化。
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Pollen characteristics used in determination and systematics of Quercus (Fagaceae): new data and verification of previous concepts
Quercus (oaks) is a large and important genus of woody angiosperms occurring in a wide range of environments and often occupying a dominant position in temperate forests of the Northern Hemisphere or being a minor component in some subtropical and tropical forests. A reliable determination of fossil dispersed oak pollen requires combined light, scanning electron (SEM) and transmission electron microscopy (TEM) studies and relevant comparative data on extant oak species. We provide SEM and TEM data on 22 extant Quercus spp., representing all sections of the genus. The main objectives of our study were to clarify the nature of the so-called geniculus, a characteristic equatorial bulge in the exine of the colpus found in many oak species, and to test previous hypotheses about the structural basic units of the exine in Quercus. Our ontogenetic study and oxidative experiment involving several Quercus spp. and one Trigonobalanus sp. resulted in a more accurate interpretation of the nature of the geniculus and exine elements, their different developmental states and, therefore, their more reliable application in the systematics and evolution of the genus Quercus and Fagaceae in general.
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来源期刊
CiteScore
5.70
自引率
8.30%
发文量
54
审稿时长
3.5 months
期刊介绍: The Botanical Journal of the Linnean Society publishes original papers on systematic and evolutionary botany and comparative studies of both living and fossil plants. Review papers are also welcomed which integrate fields such as cytology, morphogenesis, palynology and phytochemistry into a taxonomic framework. The Journal will only publish new taxa in exceptional circumstances or as part of larger monographic or phylogenetic revisions.
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