Abstract (eng)
About structure and sculpture of Zingiberaceae and Costaceae pollen few information is available. In the present study six species of Zingiberaceae and three species of Costaceae were investigated. Various light microscopic (LM), scanning-(SEM) and transmission electron microscopic (TEM) techniques were applied to elucidate pollen wall stratification.
Zingiberaceae pollen is inaperturate and exine-less. The wall structure consists of a three layered intine and a polysaccharide surface layer. Ornamentation elements are echini, and not resistant to acetolysis, which indicates polysaccharides.
Compared to Zingiberaceae, Costaceae pollen is aperturate and psilate. The wall comprises a sporopollenin exine (tectum, infratectum) and a mono-layered intine.
The pollen wall structure of other Zingiberales, like Strelitziaceae, Heliconiaceae or Cannaceae, are well comparable to Zingiberaceae. The common feature is a thick, channeled ektintine, whereas the presence of an exine is the major difference.