PalDat - Palynological Database

an online publication on recent pollen

Populus nigra

Taxonomy:Angiospermae,Malpighiales,Salicaceae,Populus

Published: 2020-07-29

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): 26-30 µm, shortest polar axis in equatorial view (LM): -, longest polar axis in equatorial view (LM): -, shortest diameter in equatorial or polar view (LM): 26-30 µm, longest diameter in equatorial or polar view (LM): 26-30 µm, pollen class: inaperturate, polarity: isopolar, P/E-ratio: -, shape: spheroidal, outline in polar view: circular, dominant orientation (LM): oblique, 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: verrucate, gemmate, scabrate, nexine: -, sexine: -, SEM ornamentation SEM: no suitable term, suprasculpture SEM: -, TEM tectum: semitectate, infratectum: columellate, foot layer: discontinuous, 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: endexine thin; ornamentation occasional microechinate

Author(s) of diagnosis: Halbritter, Halbritter; Sam, Saskia; Heigl, Helmut

Pictures

1. habitus

2. inflorescence(s)

3. acetolyzed pollen, upper focus

4. acetolyzed pollen, optical section

5. acetolyzed pollen, lower focus

6. generative cell

7. hydrated Pollen

8. hydrated Pollen

9. hydrated Pollen

10. hydrated pollen grains

11. hydrated pollen grain

12. exine surface

13. exine surface

14. dry pollen grains

15. Ubisch bodies on locule wall

16. pollen grain in cross section

17. pollen wall, interapertural area

18. pollen wall, interapertural area

19. vegetative nucleus and generative cell

20. Ubisch bodies on locule wall

Picture legend

habitus, photographer: Sam, S.
inflorescence(s), photographer: Sam, S.
acetolyzed pollen, upper focus - 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 - fresh, glycerine, unstained, photographer: Heigl, H.
hydrated Pollen - fresh, glycerine, ruthenium red, photographer: Heigl, H.
hydrated Pollen - fresh, glycerine, ruthenium red, photographer: Heigl, H.
hydrated pollen grains - fresh, DMP & critical point dried, photographer: Halbritter, H.
hydrated pollen grain - fresh, DMP & critical point dried, photographer: Halbritter, H.
exine surface - fresh, DMP & critical point dried, photographer: Halbritter, H.
exine surface - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Sam, S.
dry pollen grains - dry, sputter coated with gold, photographer: Halbritter, H.
Ubisch bodies on locule wall - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Sam, S.
pollen grain in cross section - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Sam, S.
pollen wall, interapertural area - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Sam, S.
pollen wall, interapertural area - fresh, glutaraldehyde & osmium & potassium ferrocyanide, potassium permanganate, photographer: Sam, S.
vegetative nucleus and generative cell - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Sam, S.
Ubisch bodies on locule wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Sam, S.

Literature

Adler W, Oswald K, Fischer R. (1994) Exkursionsflora von Österreich : 1180
Halbritter, H (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., Heigl H. 2020.Populus nigra. In: PalDat - A palynological database.https://www.paldat.org/pub/Populus_nigra/303756;jsessionid=85FD74A8654B2A4C2EDE6EAF0C35A735; accessed 2025-03-25

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