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Theoretical and Applied Genetics

, Volume 77, Issue 6, pp 793–798 | Cite as

DNA polymorphism in Allium cepa cytoplasms and its implications concerning the origin of onions

  • A. G. L. de Courcel
  • F. Vedel
  • J. M. Boussac
Originals

Summary

Mitochondrial and chloroplast DNA was isolated from fertile and cytoplasmic male sterile cultivars of cultivated onions. Restriction fragment length polymorphism led to the distinction between cytoplasms S and M. Mitochondrial DNA patterns from S cytoplasms appeared dentical and characterized mostly male sterile lines. An open-pollinated variety was found to bear this cytoplasm and thought to be the origin of S types. Mitochondrial DNA patterns from M cytoplasms were subdivided into four types, M1 and M2 corresponding to normal N cytoplasm, M3 and M4 probably corresponding to T cytoplasms. S and M cytoplasms were also distinguished by chloroplast DNA restriction patterns. Our results confirm previous genetic distinction between S, N and T cytoplasms.

Key words

Mitchondrial DNA Chloroplast DNA DNA polymorphism Cytoplasmic male sterility Onion 

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Copyright information

© Springer-Verlag 1989

Authors and Affiliations

  • A. G. L. de Courcel
    • 1
    • 2
  • F. Vedel
    • 2
  • J. M. Boussac
    • 1
  1. 1.Clause Semences ProfessionnellesBretigny sur OrgeFrance
  2. 2.Génétique Moléculaire des Plantes, UA 115, Bâtiment 360Université de Paris-SudOrsay CedexFrance

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