Abstract
SUMMARYPopulations of Anemone pavonina from Tuscany with simple, semidouble and double flowers were indagated. Caryological studies did not reveal any substantial difference in the three forms. The chromosome number resulted 2n= 16+ IB, with a pair of chromosome satellized. During microsporogenesis, cytomixis and formation of micronuclei occurred. In the cytoplasm of pollen dyads and pollen tetrads, formations were observed, which can be interpreted as persistent nucleoli. Caryological observations seem to validate the hypothesis that populations of A. pavonina in Tuscany originate from cultivated plants.
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