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Plant Systematics and Evolution

, Volume 176, Issue 1–2, pp 53–61 | Cite as

Effect of the breeding system on the genetic structure in threeCephalanthera spp. (Orchidaceae)

  • Renato Scacchi
  • Gilberto De Angelis
  • Rosa Maria Corbo
Article

Abstract

The genetic variation of seven enzymes for a total of nine loci was investigated in three species of terrestrial orchids of the genusCephalanthera:C. longifolia, C. rubra, andC. damasonium. These species are characterized by presenting different breeding types: outbreeding , outbreeding with facultative vegetative reproduction, and inbreeding, respectively. Electrophoretic evidence points to a difference in the behaviour of each of the three species which seems strictly related to the breeding type. On the basis of our resultsC. longifolia behaves as a normal outbreeder, whileC. rubra presents the influence of vegetative reproduction in some populations and not in others.C. damasonium shows a total lack of both among and within populations genetic variation, which is most probably due to the autogamic breeding type.

Key words

Angiosperms monocotyledons Orchidaceae Cephalanthera Allozymes electrophoresis genetic variation breeding type 

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Copyright information

© Springer-Verlag 1991

Authors and Affiliations

  • Renato Scacchi
    • 1
  • Gilberto De Angelis
    • 2
  • Rosa Maria Corbo
    • 1
  1. 1.CNR Centre of Evolutionary Genetics, Department of Genetics and Molecular BiologyUniversity “La Sapienza”RomeItaly
  2. 2.Promoter Committee of the Natural Regional Park of Mounts LucretiliRomeItaly

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