Variability of Caltha palustris L. populations in garden culture

Krystyna Falińska


On the basis of studies performed in the experimental garden the character of the variability of Caltha palustris L. populations is described. Individuals were bred under uniform conditions from diaspores of meadow, springwood, flood-plain forest and alder forest populations. The results obtained allow to evaluate the hypothesis concerning the ecological preference of cytotypes (S m i t 1967, 1968) and the somewhat different ecological requirements of two subspecies: C. palustris ssp. palustris and C. palustris ssp. cornuta. It was found that each population includes individuals with different cytotypes. The situation is similar as far as subspecies are concerned, distinguished on the basis of fruit morphology (Fig. 1). It should be stressed, however, that, investigations of many years duration raised serious doubts as to the diagnostic value of fruit morphology (Figs. 2, 3). On the basis of the preserved differences between the populations in shoot habitus, reproduction and phenology in garden culture, a springwood and an alder forest ecotype were distinguished. Meadow and flood-plain populations exhibited a transitional character with certain similarities both to the alder forest and to the springwood populations.

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Journal ISSN:
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