Populus tremula
Taxonomy: Angiospermae, Malpighiales, Salicaceae, Populus
Published: 2016-08-08
Pollen Description
Shape, Size and Aperture
pollen unit: monad, dispersal unit and peculiarities: monad, size (pollen unit): medium-sized (26-50 µm), size of hydrated pollen (LM): -, shortest polar axis in equatorial view (LM): -, longest polar axis in equatorial view (LM): -, shortest diameter in equatorial or polar view (LM): -, longest diameter in equatorial or polar view (LM): -, pollen class: inaperturate, polarity: isopolar, P/E-ratio: -, shape: spheroidal, outline in polar view: circular, dominant orientation (LM): -, P/E-ratio (dry pollen): -, shape (dry pollen): irregular, outline in polar view (dry pollen): irregular, infoldings (dry pollen): irregularly infolded, aperture number: none, aperture type: no aperture, aperture condition: inaperturate, aperture peculiarities: -
Ornamentation and Structure
LM ornamentation LM: scabrate, nexine: -, sexine: -, SEM ornamentation SEM: microreticulate, microechinate, suprasculpture SEM: -, TEM tectum: semitectate, infratectum: columellate, foot layer: absent, endexine: compact-continuous, intine: monolayered, wall peculiarities: -, supratectal element: -
Miscellaneous
pollen coatings: absent, reserves in cytoplasm: starch, cell number: 2-celled, Ubisch bodies: present
Annotations: exine ruptures irregularly when swelling
Author(s) of diagnosis: Halbritter, Heidemarie; Sam, Saskia
Pictures
1. habitus
2. inflorescence(s)
3. acetolyzed pollen, upper view
4. acetolyzed pollen, optical section
5. acetolyzed pollen, lower focus
6. generative cell
7. hydrated pollen grain
8. exine surface
9. exine surface (more expanded and ruptured)
10. dry pollen grains
11. Ubisch bodies on locule wall
12. pollen wall
13. vegetative nucleus and generative cell
Picture legend
- habitus, photographer: Sam, S.
- inflorescence(s), photographer: Sam, S.
- acetolyzed pollen, upper view - dry, acetolyzed, unstained, photographer: Sam, S.
- acetolyzed pollen, optical section - dry, acetolyzed, unstained, photographer: Sam, S.
- acetolyzed pollen, lower focus - dry, acetolyzed, unstained, photographer: Sam, S.
- generative cell - fresh, unfixed, aceto-carmine, photographer: Sam, S.
- hydrated pollen grain - fresh, DMP & critical point dried, photographer: Halbritter, H.
- exine surface - fresh, DMP & critical point dried, photographer: Halbritter, H.
- exine surface (more expanded and ruptured) - fresh, DMP & critical point dried, photographer: Halbritter, H.
- dry pollen grains - dry, sputter coated with gold, photographer: Halbritter, H.
- Ubisch bodies on locule wall - fresh, critical point dried & sputter coated with gold, photographer: Sam, S.
- pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Sam, S.
- vegetative nucleus and generative cell - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Sam, S.
Literature
- (1994) Exkursionsflora von Österreich : 1180
- (1998) Preparing living pollen material for scanning electron microscopy using 2,2-dimethoxypropane (DMP) and criticalpoint drying. Biotechnic Histochem 73: 137–143
Copyright and Citation
Cite this publication as:
Halbritter H., Sam S. 2016. Populus tremula. In: PalDat - A palynological database. https://pc8.botanik.univie.ac.at/pub/Populus_tremula/301292;jsessionid=C5195AE10C5E160F6F5132FBD0FE4F9F; accessed 2025-01-10