Pollen morphology and variability of invasive Spiraea tomentosa L

The aim of this study was to investigate the pollen morphology and the ranges of intraspecific and interindividual variability of the North American steeplebush-Spiraea tomentosa L., an invasive species in Poland. Steeplebush inflorescences were collected randomly from 30 localities of S. tomentosa...

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Bibliographic Details
Published in:PloS one 2019-08, Vol.14 (8), p.e0218276
Main Authors: Wronska-Pilarek, Dorota, Wiatrowska, Blanka, Bocianowski, Jan
Format: Article
Language:English
Subjects:
Electron microscopy
Introduced species
Meadowsweet
Scanning electron microscopes
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Summary:The aim of this study was to investigate the pollen morphology and the ranges of intraspecific and interindividual variability of the North American steeplebush-Spiraea tomentosa L., an invasive species in Poland. Steeplebush inflorescences were collected randomly from 30 localities of S. tomentosa in Poland. In total, 900 pollen grains were analysed with both a light and a scanning electron microscope. Nine quantitative and three qualitative pollen features were studied. The diagnostic features were: exine ornamentation (size and direction of the muri), operculum and perforation size. For the first time, the intraspecific and interindividual variability of the pollen grains of the highly invasive S. tomentosa were investigated. Pollen grain features were so similar, that they did not allow to differentiate individual samples of S. tomentosa and only groups of samples were recognized.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0218276