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<p>Pollen morphology of <italic>Beta trigyna</italic>, <italic>B. vulgaris</italic> and <italic>B. vulgaris</italic> subsp. <italic>maritima</italic>, last of those studied for the first time, was investigated using light and scanning electron microscopy, based on 10 herbarium specimens. The aim of the study was to provide detailed data on the pollen characteristics of these taxa to identify similarities and differences between them. Pollen grains are pantoporate, spheroidal, circular in outline; small- and medium-sized. Exine sculpture is nanoechinate, tectum is psilate or psilate-perforate. Pore membranes are nanoechinate. Diagnostic relevance of the characters of pollen grains is discussed (pollen and pore diameters, distance between pores and between pore centres, nanoechini size and density, number of nanoechini on pore membranes, structure of columellae). UPGMA dendrograms based on palynological data support the differentiation of <italic>B. trigyna</italic> (section Corollinae), <italic>B. vulgaris</italic> and <italic>B. vulgaris</italic> subsp. <italic>maritima</italic> (section Beta). The obtained characteristics of pollen grains of <italic>Beta</italic> species can be used in spore-pollen analysis, especially in identifying the impact of human economic activity in the past.</p>
</abstract>

Pollen morphology of Beta trigyna, B. vulgaris and B. vulgaris subsp. maritima, last of those studied for the first time, was investigated using light and scanning electron microscopy, based on 10 herbarium specimens. The aim of the study was to provide detailed data on the pollen characteristics of these taxa to identify similarities and differences between them. Pollen grains are pantoporate, spheroidal, circular in outline; small- and medium-sized. Exine sculpture is nanoechinate, tectum is psilate or psilate-perforate. Pore membranes are nanoechinate. Diagnostic relevance of the characters of pollen grains is discussed (pollen and pore diameters, distance between pores and between pore centres, nanoechini size and density, number of nanoechini on pore membranes, structure of columellae). UPGMA dendrograms based on palynological data support the differentiation of B. trigyna (section Corollinae), B. vulgaris and B. vulgaris subsp. maritima (section Beta). The obtained characteristics of pollen grains of Beta species can be used in spore-pollen analysis, especially in identifying the impact of human economic activity in the past.

Comparative morphometric and morphological study of the pollen of <italic>Beta trigyna</italic>, <italic>B. vulgaris</italic> and <italic>B. vulgaris</italic> subsp. <italic>maritima</italic> (Chenopodiaceae/Amaranthaceae <italic>sensu</italic> APG IV)

Department of Systematics and Floristics of Vascular Plants

M.G. Kholodny Institute of Botany, National Academy of Sciences of Ukraine

Department of Plant and Fungal Diversity and Resources

Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences

Hacquetia

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Comparative morphometric and morphological study of the pollen of ,  and  subsp.  (Chenopodiaceae/Amaranthaceae  APG IV)

Pollen morphology of Beta trigyna, B. vulgaris and B. vulgaris subsp. maritima, last of those studied for the first time, was investigated using light and...

Comparative morphometric and morphological study of the pollen of Beta trigyna, B. vulgaris and B. vulgaris subsp. maritima (Chenopodiaceae/Amaranthaceae sensu APG IV)

Published Online: Jul 10, 2024

Page range: 239 - 252

Received: Jul 16, 2023

Accepted: Feb 21, 2024

DOI: https://doi.org/10.2478/hacq-2023-0010

Keywords
Beteae, LM, palynomorphology, sculpture, SEM, structure, UPGMA

© 2024 Zoya M. Tsymbalyuk et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Comparative morphometric and morphological study of the pollen of Beta trigyna, B. vulgaris and B. vulgaris subsp. maritima (Chenopodiaceae/Amaranthaceae sensu APG IV)

Published Online: Jul 10, 2024

Page range: 239 - 252

Received: Jul 16, 2023

Accepted: Feb 21, 2024

DOI: https://doi.org/10.2478/hacq-2023-0010

KeywordsBeteae, LM, palynomorphology, sculpture, SEM, structure, UPGMA

© 2024 Zoya M. Tsymbalyuk et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
Beteae, LM, palynomorphology, sculpture, SEM, structure, UPGMA