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Plant Systematics and Evolution

, Volume 177, Issue 3–4, pp 193–211 | Cite as

Karyological investigations inRanunculus subg.Batrachium (Ranunculaceae) on the Aegean islands

  • Gertrud Dahlgren
Short communication

Abstract

This paper is the first report of an investigation on differentiation and evolutionary pattern inRanunculus subg.Batrachium mainly on the Aegean islands and treats the karyology in the subgenus. The following taxa and chromosome numbers are recorded.R. peltatus subsp.peltatus: 2n = 32, subsp.baudotii: 2n = 32, subsp.saniculifolius: 2n = 16, 32, and 40;R. peltatus s.l.: 2n = 32 and 48;R. penicillatus subsp.pseudofluitans: 2n = 16;R. rionii: 2n = 16;R. sphaerospermus: 2n = 16;R. trichophyllus: 2n = 32, 40, and 48;R. tripartitus: 2n = 48. The karyotypes show certain interspecific differences in chromosome size, in number of chromosome types according to centromere position and in occurrence and position of satellite chromosomes. r-Index and RCL have been calculated.

Key words

Angiosperms Ranunculaceae Batrachium Ranunculus Karyology chromosome number chromosome morphology polyploidy Flora of the Aegean islands 

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Copyright information

© Springer-Verlag 1991

Authors and Affiliations

  • Gertrud Dahlgren
    • 1
  1. 1.Department of Systematic BotanyLundSweden

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