Apertural chambers inGeranium: Development and ultrastructure |
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| Authors: | Martina Weber |
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| Institution: | (1) Institute of Botany, University of Vienna, Rennweg 14, A-1030 Vienna, Austria |
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| Abstract: | Pollen grains ofGeranium robertianum andG. pratense are tricolpate. At the time of the vacuolated microspore stage intine protrusions are formed at each aperture. Each aperture becomes separated from the vegetative cytoplasm by a thick ectintine layer. Starch grains are enclosed in the protrusions and do not participate in pollen tube growth. |
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| Keywords: | Apertural protrusion Vacuolated microspore Starch Ectintine Pollen germination Geranium |
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