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Re: Wet Pollen

  • Subject: Re: Wet Pollen
  • From: Marc Gibernau <gibernau@cict.fr>
  • Date: Fri, 22 May 2009 09:51:08 +0200

Dear Theodore,

In fact what's happened is that the pollen content is very concentrated in minerals, sugars,.... and if it's soaked in water by osmotic force (difference of element concentration between the pollen grain and the surrounding water) the water goes within the pollen, "in order" to equilibrate the elements concentrations (outside and inside). But in fact the volume of water needed to equilibrate the two element concentrations is greater than the volume of the pollen grain which will explode under high water pressure.

When doing aroid pollen counts or testing viability, in general we use water with 10%sugar, in order to decrease the difference of element concentrations.

By teh way Montrichardia has been described to have an atypical exploding pollen germination (see attached file) but in this species, it's "normal".

All the best,


Attachment: Montrichardia exploding pollen - Weber & Halbritter 2007.pdf
Description: Adobe PDF document

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