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PalDat - Palynological Database

an online publication on recent pollen

Nigella arvensis

Taxonomy: Angiospermae, Ranunculales, Ranunculaceae, Nigella

Links: https://flora.nhm-wien.ac.at/Seiten-Arten/Nigella-arvensis.htm

Published: 2021-06-23

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, 31-35 µm,  shortest polar axis in equatorial view (LM): 26-30 µm,  longest polar axis in equatorial view (LM): -,  shortest diameter in equatorial or polar view (LM): 31-35 µm,  longest diameter in equatorial or polar view (LM): 31-35 µm,  pollen class: colpate,  polarity: isopolar,  P/E-ratio: -,  shape: spheroidal,  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: colpus,  aperture condition: colpate, tricolpate,  aperture peculiarities: aperture membrane ornamented

Ornamentation and Structure

LM  ornamentation LM: verrucate, scabrate, gemmate,  nexine: -,  sexine: -,  SEM  ornamentation SEM: microechinate, perforate,  suprasculpture SEM: -,  TEM  tectum: eutectate,  infratectum: columellate,  foot layer: continuous,  endexine: compact-continuous,  intine: monolayered,  wall peculiarities: internal tectum,  supratectal element: -

Miscellaneous

pollen coatings: pollenkitt,  reserves in cytoplasm: starch, lipids,  cell number: 2-celled,  Ubisch bodies: present

Author(s) of diagnosis: Oberschneider, Wolfgang; Weber, Martina; Auer, Waltraud

Pictures

flower(s)

1. flower(s)

flower(s)

2. flower(s)

upper focus

3. upper focus

optical section

4. optical section

lower focus

5. lower focus

hydrated Pollen

6. hydrated Pollen

hydrated Pollen

7. hydrated Pollen

hydrated Pollen

8. hydrated Pollen

polar view

9. polar view

equatorial view

10. equatorial view

detail of aperture

11. detail of aperture

exine surface

12. exine surface

polar view of dry pollen grain

13. polar view of dry pollen grain

dry pollen grain in equatorial view

14. dry pollen grain in equatorial view

interapertural area of pollen wall

15. interapertural area of pollen wall

pollen wall

16. pollen wall

aperture

17. aperture

Ubisch bodies (top)

18. Ubisch bodies (top)

Ubisch body

19. Ubisch body

generative cell (top) and vegetative nucleus

20. generative cell (top) and vegetative nucleus

Picture legend

  1. flower(s), photographer: Halbritter, H.
  2. flower(s), photographer: Oberschneider, W.
  3. upper focus - fresh, acetolyzed, unstained, photographer: Oberschneider, W.
  4. optical section - fresh, acetolyzed, unstained, photographer: Oberschneider, W.
  5. lower focus - fresh, acetolyzed, unstained, photographer: Oberschneider, W.
  6. hydrated Pollen - fresh, glycerine, unstained, photographer: Auer, W.
  7. hydrated Pollen - fresh, glycerine, ruthenium red, photographer: Auer, W.
  8. hydrated Pollen - fresh, glycerine, ruthenium red, photographer: Auer, W.
  9. polar view - fresh, rehydration (water) & chloroform & critical point dried & sputter coated with gold, photographer: Oberschneider, W.
  10. equatorial view - fresh, rehydration (water) & chloroform & critical point dried & sputter coated with gold, photographer: Oberschneider, W.
  11. detail of aperture - fresh, rehydration (water) & chloroform & critical point dried & sputter coated with gold, photographer: Oberschneider, W.
  12. exine surface - fresh, rehydration (water) & chloroform & critical point dried & sputter coated with gold, photographer: Oberschneider, W.
  13. polar view of dry pollen grain - dry, sputter coated with gold, photographer: Oberschneider, W.
  14. dry pollen grain in equatorial view - dry, sputter coated with gold, photographer: Oberschneider, W.
  15. interapertural area of pollen wall - fresh, glutaraldehyde & osmium, uranyl acetate & lead citrate, photographer: Oberschneider, W.
  16. pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Weber, M.
  17. aperture - fresh, glutaraldehyde & osmium, uranyl acetate & lead citrate, photographer: Oberschneider, W.
  18. Ubisch bodies (top) - fresh, glutaraldehyde & osmium, modified Thiéry-test, photographer: Oberschneider, W.
  19. Ubisch body - fresh, glutaraldehyde & osmium, lipid-test, photographer: Weber, M.
  20. generative cell (top) and vegetative nucleus - fresh, glutaraldehyde & osmium, modified Thiéry-test, photographer: Oberschneider, W.

Literature

  • Bhandari NN, Kishori R (1973) Development of tapetal membrane and Ubisch-granules in Nigella damascena - a histochemical approach. Beitr Biol Pflanzen 49: 59-72
  • Bhandari NN, Kishori R, Natesh S (1976) Ontogeny, cytology, and histochemistry of anther tapetum in relation to pollen development in Nigella damascena. Phytomorphology 26: 46-59
  • Oberschneider W (1998) Pollenmorphologie der Ranunculanae. Diplomarbeit. Universität Wien : 125 pp
  • Skvarla JJ, Nowicke JW (1979) The morphology of the exine in Nigella (Ranunculaceae). Amer J Bot 66: 162-165
  • Vijayaraghavan MR, Marwah K, (1969) Studies in the family Ranunculaceae-microsporangium, microsporogenesis and ubisch granules in Nigella damascena. Phyton 13: 203-209
  • Weber A (1993) Struktur, Antheseverlauf und Bestäubung der Blüte von Nigella arvensis (Ranunculaceae). Verh Zool Bot Ges Österreich 130: 99-125
  • 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:

Oberschneider W., Weber M., Auer W., Halbritter H. 2021. Nigella arvensis. In: PalDat - A palynological database. https://www.paldat.org/pub/Nigella_arvensis/306289;jsessionid=65F118DA4DDB4323C9E68D150A8EC6B5; accessed 2024-04-25

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