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Molecular Genetics of Self-incompatibility inNicotiana alata

  • Shaio-Lim Mau
  • Antony Bacic
  • Jane Murfett
  • Bruce McClure
  • Marilyn Anderson
  • Adrienne Clarke
Conference paper

Abstract

Self-incompatibility is a genetically controlled mechanism which prevents inbreeding in plants (de Nettancourt, 1977). In many, but not all cases, it is controlled by a multi-allelic, single gene, the S-gene. The system operates to enhance outcrossing and to ensure that a plant is fertilized by a genetically distinct individual of the same species. There are two major types of self-incompatibility. The most widespread is gametophytic self-incompatibility which involves interaction of a product of the haploid genome of the male gametophyte (carried within the pollen grain) and a product of the diploid genome of the female tissue of the sporophyte, the pistil. In incompatible matings, as is the case when the S-allele carried by the haploid pollen matches either of the S-alleles present in the diploid style, pollen tube growth is arrested within the transmitting tract (Figure 1).

Keywords

Pollen Tube Pollen Product RNase Activity Incompatible Pollen Tube Incompatible Cross 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag New York, Inc. 1992

Authors and Affiliations

  • Shaio-Lim Mau
  • Antony Bacic
  • Jane Murfett
  • Bruce McClure
  • Marilyn Anderson
  • Adrienne Clarke

There are no affiliations available

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