Pollen Polysaccharide Reserves in Some Plants of Economic Interest

  • G. G. Franchi
  • E. Pacini
Conference paper

Abstract

A recent paper by Baker and Baker (1979) on starch reserves in Angiosperm pollen grains only reports finding black and dark blue starch by the IKI test. However other types of insoluble polysaccharides, made not only by amylose and amylopectin, are present: they are composed mainly of amylopectin and dextrin, which stain from dark red to brown with the IKI test. Starch was detected in the shed pollen of 152 plant species and cultivars of economic interest. The cytological detection of starch was effected microscopically either by 1) staining with iodine/potassium iodide (IKI) or 2) observing by polarization microscopy. The occurrence of polysaccharides dispersed in the cytoplasm was detected by PAS preceeded by aldehyde blockade. Plants belong to the following families: Cucurbitaceae, Graminaceae, Labiatae, Leguminosae, Liliaceae, Oleaceae, Rosaceae, Rutaceae, Solanaceae.

Keywords

Starch Aldehyde Polysaccharide Iodide Amylose 

References

  1. Baker H.G. and Baker I., 1979 - Starch in Angiosperm pollen grains and its evolutionary significance. Amer. J. Bot. 66: 591-600.CrossRefGoogle Scholar
  2. Ciampolini F., Cresti M. and Kapil R.N., 1982 - Germination of cherry pollen grains in vitro - an ultrastructural study. Phytomorphology 32: 364-373.Google Scholar
  3. Stanley R.G. and Linskens H.F., 1974 - Pollen. Biology, biochemistry, management. Springer Verlag, Berlin.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1988

Authors and Affiliations

  • G. G. Franchi
    • 1
  • E. Pacini
    • 2
  1. 1.Sections of Pharmaceutical BotanyUniversity of SienaSienaItaly
  2. 2.Sections of BotanyUniversity of SienaSienaItaly

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