Theoretical and Applied Genetics

, Volume 86, Issue 5, pp 562–566

Quantitatively determined self-incompatibility. 5. Detection of multi-locus systems

  • O. Mayo
  • C. R. Leach

DOI: 10.1007/BF00838709

Cite this article as:
Mayo, O. & Leach, C.R. Theoret. Appl. Genetics (1993) 86: 562. doi:10.1007/BF00838709


Multi-locus self-incompatibility systems may be distinguished from single-locus systems by reciprocal differences in backcrosses and between crossed progeny of individual clearly compatible crosses. Such crosses are extremely laborious, so other methods have been suggested. In this note, it is shown that the coefficient of crossability is not a useful discriminant of self-incompatibility, as indeed should be expected from the properties of multi-locus systems, and that linkage methods are also unlikely to be successful. Until more self-incompatibility genes have had their sequences characterised, there is no substitute for the traditional genetical methods.

Key words

BioassayCoefficient of crossabilitySelf incompatibilityLinkage estimation

Copyright information

© Springer-Verlag 1993

Authors and Affiliations

  • O. Mayo
    • 1
  • C. R. Leach
    • 2
  1. 1.CSIRO Division of Animal ProductionBlacktownAustralia
  2. 2.Department of GeneticsUniversity of AdelaideAustralia