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PalDat - Palynological Database

an online publication on recent pollen

Brassica nigra

Taxonomy: Angiospermae, Brassicales, Brassicaceae, Brassica

Published: 2016-08-11

Pollen Description

Shape, Size and Aperture

pollen unit: monad,  dispersal unit and peculiarities: monad,  size (pollen unit): medium-sized (26-50 µm),  pollen class: colpate,  polarity: isopolar,  shape: prolate,  outline in polar view: circular,  shape (dry pollen): prolate,  outline in polar view (dry pollen): lobate,  infoldings (dry pollen): aperture(s) sunken,  aperture number: 3,  aperture type: colpus,  aperture condition: colpate, tricolpate,  aperture peculiarities: aperture membrane ornamented

Ornamentation and Structure

LMornamentation LM: reticulate,  nexine: -,  sexine: -,  SEMornamentation SEM: reticulate,  TEMtectum: semitectate,  infratectum: columellate,  foot layer: discontinuous,  endexine: compact-continuous,  intine: monolayered,  wall peculiarities: -

Miscellaneous

pollen coatings: tryphine,  reserves in cytoplasm: -,  cell number: 3-celled,  Ubisch bodies: absent

Author(s) of diagnosis: Bombosi, Paula

Pictures

flower(s)

1. flower(s)

polar view,upper focus

2. polar view, upper focus

optical section

3. optical section

polar view,lower focus

4. polar view, lower focus

pollen grain with sperm cells (arrows)

5. pollen grain with sperm cells (arrows)

polar view

6. polar view

equatorial view

7. equatorial view

detail of aperture

8. detail of aperture

exine surface

9. exine surface

polar view (dry pollen grain)

10. polar view (dry pollen grain)

dry pollen grain in equatorial view

11. dry pollen grain in equatorial view

pollen grains in cross section

12. pollen grains in cross section

interapertural area of pollen wall, intine (I), endexine (E)

13. interapertural area of pollen wall, intine (I), endexine (E)

apertural area of pollen wall, intine (I)

14. apertural area of pollen wall, intine (I)

Picture legend

  1. flower(s), photographer: Bombosi, P.
  2. polar view, upper focus - dry, acetolyzed, unstained, photographer: Bombosi, P.
  3. optical section - dry, acetolyzed, unstained, photographer: Bombosi, P.
  4. polar view, lower focus - dry, acetolyzed, unstained, photographer: Bombosi, P.
  5. pollen grain with sperm cells (arrows) - fixed, glutaraldehyde, aceto-carmine, photographer: Bombosi, P.
  6. polar view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Bombosi, P.
  7. equatorial view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Bombosi, P.
  8. detail of aperture - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Bombosi, P.
  9. exine surface - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Bombosi, P.
  10. polar view (dry pollen grain) - dry, sputter coated with gold, photographer: Bombosi, P.
  11. dry pollen grain in equatorial view - dry, sputter coated with gold, photographer: Bombosi, P.
  12. pollen grains in cross section - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Bombosi, P.
  13. interapertural area of pollen wall, intine (I), endexine (E) - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Bombosi, P.
  14. apertural area of pollen wall, intine (I) - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Bombosi, P.

Literature

  • Halbritter, H (1998) Preparing living pollen material for scanning electron microscopy using 2,2-dimethoxypropane (DMP) and criticalpoint drying. Biotechnic Histochem 73: 137–143
  • Adler W, Oswald K, Fischer R. (1994) Exkursionsflora von Österreich : 1180

Copyright and Citation

Cite this publication as:

Bombosi P. 2016. Brassica nigra. In: PalDat - A palynological database. https://www.paldat.org/pub/Brassica_nigra/301311;jsessionid=BEA48583F38B47CA788DCA201C78AF81; accessed 2018-11-18

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