PALYNOLOGICAL STUDY OF THE GENUS CARDUUS L. (ASTERACEAE) IN IRAN

Carduus L.(Asteraceae) comprised about ۹۰ species of which ۸ of them are distributed in Iran. From these only one species is endemic. The pollen morphology of eight species of Carduus was investigated using light and scanning electron microscope (SEM). The pollen type was sub-oblate to oblate-spheroidal, with echinate sculpturing. The grains sizes varies from ۳۵.۷۶-۵۰.۴۶ µm in polar view and from ۳۷.۳۸-۵۹.۶۳ µm in equatorial view. Palynological data are useful characters to separate studied species. The out-group species belong to the genus Cirsium Mill.andare located in a distinct cluster. The obtained species relationships are in agreement with the morphological results and previous taxonomic treatment of the genus.

کلیدواژه ها:

Carduus ، Asteraceae ، SEM ، LM ، Palynology