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an online publication on recent pollen

Populus nigra

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),  pollen class: inaperturate,  polarity: isopolar,  shape: spheroidal,  outline in polar view: circular,  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

LMornamentation LM: scabrate,  nexine: -,  sexine: -,  SEMornamentation SEM: no suitable term,  TEMtectum: semitectate,  infratectum: columellate,  foot layer: discontinuous,  endexine: compact-continuous,  intine: monolayered,  wall peculiarities: -

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

Pictures

habitus

1. habitus

inflorescence(s)

2. inflorescence(s)

acetolyzed pollen,upper focus

3. acetolyzed pollen, upper focus

acetolyzed pollen,optical section

4. acetolyzed pollen, optical section

acetolyzed pollen,lower focus

5. acetolyzed pollen, lower focus

generative cell

6. generative cell

hydrated pollen grains

7. hydrated pollen grains

hydrated pollen grain

8. hydrated pollen grain

exine surface

9. exine surface

exine surface

10. exine surface

dry pollen grains

11. dry pollen grains

Ubisch bodies on locule wall

12. Ubisch bodies on locule wall

pollen grain in cross section

13. pollen grain in cross section

pollen wall, interapertural area

14. pollen wall, interapertural area

pollen wall, interapertural area

15. pollen wall, interapertural area

vegetative nucleus and generative cell

16. vegetative nucleus and generative cell

Ubisch bodies on locule wall

17. Ubisch bodies on locule wall

Picture legend

  1. habitus, photographer: Sam, S.
  2. inflorescence(s), photographer: Sam, S.
  3. acetolyzed pollen, upper focus - dry, acetolyzed, unstained, photographer: Sam, S.
  4. acetolyzed pollen, optical section - dry, acetolyzed, unstained, photographer: Sam, S.
  5. acetolyzed pollen, lower focus - dry, acetolyzed, unstained, photographer: Sam, S.
  6. generative cell - fresh, unfixed, aceto-carmine, photographer: Sam, S.
  7. hydrated pollen grains - fresh, DMP & critical point dried, photographer: Halbritter, H.
  8. hydrated pollen grain - fresh, DMP & critical point dried, photographer: Halbritter, H.
  9. exine surface - fresh, DMP & critical point dried, photographer: Halbritter, H.
  10. exine surface - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Sam, S.
  11. dry pollen grains - dry, sputter coated with gold, photographer: Halbritter, H.
  12. Ubisch bodies on locule wall - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Sam, S.
  13. pollen grain in cross section - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Sam, S.
  14. pollen wall, interapertural area - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Sam, S.
  15. pollen wall, interapertural area - fresh, glutaraldehyde & osmium & potassium ferrocyanide, potassium permanganate, photographer: Sam, S.
  16. vegetative nucleus and generative cell - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Sam, S.
  17. 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. 2016. Populus nigra. In: PalDat - A palynological database. https://www.paldat.org/pub/Populus_nigra/301295;jsessionid=F9720EF1AA26DB2D0D6B2AB48A1ABAA3; accessed 2018-11-17

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