T. V. Zhuikova, V. N. Pozolotina, and V. S. Bezel’
Institute of Plant and Animal Ecology, Ural Division, Russian Academy of Sciences, ul. Vos’mogo Marta 202, Ekaterinburg,
620144 Russia
Received October 12, 1998
Abstract—Individual variation in seed progeny was studied in two morphological forms of Taraxacum offici-
nale s.l. growing in areas with an increasing level of technogenic pollution. Different strategies of adaptation
of the two forms were revealed. Under the heaviest pollution, T. dahlstedtii produces more viable seeds than
T.pectinatiforme, whereas the seed generation of the latter has a higher index of metal resistance. This enables
the two forms to exist within one cenopopulation.
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