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PalDat - Palynological Database

an online publication on recent pollen

Castanea sativa

Taxonomy: Angiospermae, Fagales, Fagaceae, Castanea

Links: http://flora.nhm-wien.ac.at/seiten-arten/castanea-sativa.htm

Published: 2020-08-03

Pollen Description

Shape, Size and Aperture

pollen unit: monad,  dispersal unit and peculiarities: monad,  size (pollen unit): small (10-25 µm),  size of hydrated pollen (LM): 11-15 µm,  shortest polar axis in equatorial view (LM): 11-15 µm,  longest polar axis in equatorial view (LM): 11-15 µm,  shortest diameter in equatorial or polar view (LM): 11-15 µm,  longest diameter in equatorial or polar view (LM): 11-15 µm,  pollen class: colporate,  polarity: isopolar,  P/E-ratio: prolate,  shape: -,  outline in polar view: circular,  dominant orientation (LM): oblique,  P/E-ratio (dry pollen): prolate,  shape (dry pollen): -,  outline in polar view (dry pollen): lobate,  infoldings (dry pollen): aperture(s) sunken,  aperture number: 3,  aperture type: colporus,  aperture condition: colporate, tricolporate,  aperture peculiarities: -

Ornamentation and Structure

LMornamentation LM: psilate,  nexine: -,  sexine: -,  SEMornamentation SEM: rugulate, perforate,  suprasculpture SEM: -,  TEMtectum: eutectate,  infratectum: columellate,  foot layer: continuous,  endexine: compact-continuous,  intine: monolayered,  wall peculiarities: -,  supratectal element: -

Miscellaneous

pollen coatings: absent,  reserves in cytoplasm: -,  cell number: 2-celled,  Ubisch bodies: present

Annotations: columellae very short

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

Pictures

inflorescence(s)

1. inflorescence(s)

inflorescence(s)

2. inflorescence(s)

flower(s)

3. flower(s)

pollen grain with generative cell

4. pollen grain with generative cell

upper focus

5. upper focus

optical section

6. optical section

lower focus

7. lower focus

hydrated Pollen

8. hydrated Pollen

hydrated Pollen

9. hydrated Pollen

hydrated Pollen

10. hydrated Pollen

polar view

11. polar view

equatorial view

12. equatorial view

aperture

13. aperture

polar area

14. polar area

exine surface

15. exine surface

dry pollen grains

16. dry pollen grains

Ubisch bodies

17. Ubisch bodies

interapertural area of pollen wall

18. interapertural area of pollen wall

apertural area of pollen wall

19. apertural area of pollen wall

pollen wall at transition of aperture and interapertural area

20. pollen wall at transition of aperture and interapertural area

vegetative nucleus

21. vegetative nucleus

Picture legend

  1. inflorescence(s), photographer: Halbritter, H.
  2. inflorescence(s), photographer: Buchner, R.
  3. flower(s), photographer: Sam, S.
  4. pollen grain with generative cell - fresh, unfixed, aceto-carmine, photographer: Sam, S.
  5. upper focus - fresh, acetolyzed, unstained, photographer: Sam, S.
  6. optical section - fresh, acetolyzed, unstained, photographer: Sam, S.
  7. lower focus - fresh, acetolyzed, unstained, photographer: Sam, S.
  8. hydrated Pollen - fresh, glycerine, unstained, photographer: Heigl, H.
  9. hydrated Pollen - fresh, glycerine, ruthenium red, photographer: Heigl, H.
  10. hydrated Pollen - fresh, glycerine, ruthenium red, photographer: Heigl, H.
  11. polar view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  12. equatorial view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  13. aperture - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  14. polar area - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  15. exine surface - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  16. dry pollen grains - dry, sputter coated with gold, photographer: Halbritter, H.
  17. Ubisch bodies - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Sam, S.
  18. interapertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Sam, S.
  19. apertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Sam, S.
  20. pollen wall at transition of aperture and interapertural area - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Sam, S.
  21. vegetative nucleus - 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., Buchner R. 2020. Castanea sativa. In: PalDat - A palynological database. https://www.paldat.org/pub/Castanea_sativa/303767;jsessionid=034BF3B481FB178D7B773A174C98C8FD; accessed 2020-09-23

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