Juglans regia
Taxonomy: Spermatophyta, Juglandales, Juglandaceae, Juglans
Published: 2005-06-01
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): -, shortest polar axis in equatorial view (LM): -, longest polar axis in equatorial view (LM): -, shortest diameter in equatorial or polar view (LM): -, longest diameter in equatorial or polar view (LM): -, pollen class: -, polarity: isopolar, P/E-ratio: oblate, shape: -, outline in polar view: circular, dominant orientation (LM): -, P/E-ratio (dry pollen): -, shape (dry pollen): irregular, outline in polar view (dry pollen): irregular, infoldings (dry pollen): interapertural area sunken, aperture number: >6, aperture type: -, aperture condition: porate, aperture peculiarities: pantoaperturate, aperture membrane ornamented, annulus
Ornamentation and Structure
LM ornamentation LM: psilate, nexine: -, sexine: -, SEM ornamentation SEM: microechinate, suprasculpture SEM: -, TEM tectum: eutectate, infratectum: granular, foot layer: continuous, endexine: absent, intine: monolayered, wall peculiarities: -, supratectal element: -
Miscellaneous
pollen coatings: absent, reserves in cytoplasm: -, cell number: 2-celled, Ubisch bodies: absent
Annotations: Hydrated pollen grains are often slightly oblate, pores are often more irregularly distributed. Most of apertures on equator.
Author(s) of diagnosis: Halbritter, H.; Sam, S.
Pictures
1. inflorescence of Juglans regia
2. flowers of Juglans regia
3. upper focus
4. optical section
5. lower focus
6. pollen grain with vegetative nucleus and generative cell
7. polar view
8. equatorial view
9. equatorial view
10. aperture
11. exine surface
12. exine surface
13. dry pollen grains
14. polar view (dry pollen grain)
15. interapertural area of pollen wall
16. apertural area of pollen wall
17. generative cell (left) and vegetative nucleus (right)
Picture legend
- inflorescence of Juglans regia, photographer: Halbritter, H.
- flowers of Juglans regia, photographer: Sam, S.
- upper focus - fresh, acetolyzed, unstained, photographer: Sam, S.
- optical section - fresh, acetolyzed, unstained, photographer: Sam, S.
- lower focus - fresh, acetolyzed, unstained, photographer: Sam, S.
- pollen grain with vegetative nucleus and generative cell - fresh, unfixed, aceto-carmine, photographer: Sam, S.
- polar view - fresh, DMP & critical point dried, photographer: Sam, S.
- equatorial view - fresh, DMP & critical point dried, photographer: Sam, S.
- equatorial view - fresh, DMP & critical point dried, photographer: Sam, S.
- aperture - fresh, DMP & critical point dried, photographer: Sam, S.
- exine surface - fresh, DMP & critical point dried, photographer: Sam, S.
- exine surface - fresh, DMP & critical point dried, photographer: Sam, S.
- dry pollen grains - dry, sputter coated with gold, photographer: Sam, S.
- polar view (dry pollen grain) - dry, sputter coated with gold, photographer: Sam, S.
- interapertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Sam, S.
- apertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Sam, S.
- generative cell (left) and vegetative nucleus (right) - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Sam, S.
Literature
Copyright and Citation
Cite this publication as:
Halbritter H., Sam S. 2005. Juglans regia. In: PalDat - A palynological database. https://pc8.botanik.univie.ac.at/pub/Juglans_regia/109343; accessed 2025-04-28