A new look at the acetolysis method |
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Authors: | Michael Hesse Maria Waha |
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Institution: | (1) Institut für Botanik und Botanischer Garten, Universität Wien, Rennweg 14, A-1030 Wien, Austria |
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Abstract: | The acetolysis method intreduced byGunnar Erdtman is still a very welcome and highly successful technique in palynology. However, acetolysis destroys all pollen material with the exception of sporopollenin that forms the outer pollen wall, the exine. Modern palynology in its application to plant systematics and phylogeny must consider all sporoderm characters, not only those of the exine. The neglect of the intine may distort some principal palynological aspects. This is illustrated by cases of total breakdown or gross modification of thin exine structures (e.g. inBeilschmiedia, Strelitzia) and by the clarification of apertures (e.g.,Polyalthia, Fissistigma, Calluna). In our view the investigation of both acetolysed and non-acetolysed pollen is obligatory for a well balanced view of pollen structure and function. |
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Keywords: | Angiosperms Beilschmiedia Calluna Polyalthia Strelitzia Acetolysis palynology sporoderm exine intine pollen characters |
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