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SUMMARYKaryotypes of species forming the polyploid series (2x-10x) of Leucanthemum vulgare aggr. in Italy have been defined. Observations have not given clues to the origin of polyploid species, but have revealed quantitative and structural differences, between genomes of different species, correlated with ploidy level. Such differences sem to consist mainly in a progressive reduction of the short arm of two chromosome types.
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Marchi et al. (1983) studied this question.
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