Abstract

18 populations of the grassland biennials Gentianella amarella and G. campestris were cultivated to clarify the genetical vs. environmental components of the flowering phenology, and the reproductive isolation caused by seasonal differentiation. The influence of some environmental factors was tested. The seasonal variation persisted in cultivation, and the plants could normally be assigned to distinct aestival or autumnal groups, with no reproductive contact. Flowering phenology was affected by environmental factors, but not to such an extent that the reproductive isolation was broken. The observed phenological variation was not reflected by a corresponding variation in present management practices. Management history and possible non-anthropogenic factors are discussed as alternative explanations.

Keywords

Gentianaceae; Gentianella amarella; G. campestris; seasonal differentiation; seasonal ecotypes; flowering phenology; germination; reproductive isolation; environmental factors; evolutionary history

Published in

Plant Systematics and Evolution
1997, Volume: 208, number: 1-2, pages: 45-69

SLU Authors

• Lennartsson, Tommy

  • Department of Conservation Biology, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Evolutionary Biology
Botany


Publication identifier

DOI: https://doi.org/10.1007/BF00986082

Permanent link to this page (URI)

https://res.slu.se/id/publ/101874