樟脑属花粉形态的新资料(藜科)

Q2 Agricultural and Biological Sciences
Z. Tsymbalyuk, S. Mosyakin, L. Nitsenko
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引用次数: 1

摘要

最近的分子系统发育研究表明,樟脑属单系植物。花粉形态特征作为额外的诊断特征和花粉分析用于分类学。利用光镜和扫描电镜对4种(C. annua、C. lessingii、C. monspeliaca和C. songorica)的13份花粉形态进行了研究。本研究旨在为上述植物的花粉特征提供新的资料,并评价其分类价值。结果表明:花粉粒的形状为宽孔状、球形、圆形、边缘呈波浪形或微波浪形;小型或中型。孔是圆形的,具明显的边缘。外阴雕刻为纳米尖形,顶盖为柱状或柱状穿孔。孔膜是纳米级的。讨论了花粉粒最重要的性状(花粉直径、孔数、孔径、孔间和孔中心距离、C/D值、纳米针尖密度、孔是否存在、孔膜上纳米针尖数、小柱结构)的分类相关性。本研究首次对所有树种花粉粒的外壁结构进行了分析。花粉形态是樟脑属植物分类、种特异性鉴定和花粉分析的重要信息来源。形态学数据在现有的系统发育框架中进行解释。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
New data on pollen morphology of the genus Camphorosma (Chenopodiaceae)
Recent molecular phylogenetic studies of Camphorosmoideae (Chenopodiaceae) demonstrated that Camphorosma is monophyletic. Palynomorphological peculiarities are used in taxonomy as additional diagnostic features and pollen analysis. Pollen morphology was studied using light and scanning electron microscopy, based on 13 specimens belonging to four species (C. annua, C. lessingii, C. monspeliaca and C. songorica). The aim of this research was to provide new data on pollen characteristics of the above mentioned species and to evaluate their taxonomic value. The results obtained show that pollen grains are pantoporate, spheroidal, circular in outline, undulate or slightly undulate on the edges; small or medium-sized. Pores are circular, with distinct margins. Exine sculpture is nanoechinate, tectum psilate or psilate-perforate. Pore membranes are nanoechinate. Taxonomic relevance of the most important characters of pollen grains (pollen diameter, pore number, pore diameter, distance between pores and between pore centres, C/D value, nanoechini density, presence/absence of perforations, number of nanoechini on pore membranes, structure of columellae) is discussed. The exine structure of pollen grains of all species was analysed for the first time in the current study. Pollen morphology proved to be an important additional source of information for taxonomy for species-specific identification and pollen analysis within Camphorosma. Palynomorphological data are interpreted in the existing phylogenetic framework.
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来源期刊
Acta Palaeobotanica
Acta Palaeobotanica Agricultural and Biological Sciences-Agricultural and Biological Sciences (all)
CiteScore
1.60
自引率
0.00%
发文量
5
审稿时长
20 weeks
期刊介绍: Acta Palaeobotanica is an international journal edited in English by the W. Szafer Institute of Botany, Polish Academy of Sciences, Kraków, since 1960, which publishes original palaeobotanical, palynological, palaeoecological and palaeophytogeographical papers, monographs, review and discussion articles and book reviews. It is the only journal in the Central and Eastern Europe publishing papers from all fields of palaeobotany. The journal is published regularly in one volume per year, with two numbers.
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