Genetic and environmental causes and evolutionary consequences of variations in self-fertility in self incompatible species

S. V. Good-Avila, J. I. Mena-Alí, A. G. Stephenson

Research output: Chapter in Book/Report/Conference proceedingChapter

36 Scopus citations

Abstract

Within many self incompatible species there is variation among plants in self-fertility. Mutations conferring partial or complete self-fertility occur in the Salleles themselves, in genes closely linked to the S-alleles or in unlinked genes that affect the downstream rejection pathway, in unlinked genes that modify the expression or turnover of the S-allele products, and in unlinked genes that modify the pistil environment. Populations with genetic polymorphisms for self-fertility can be used as natural laboratories to examine the dynamic interplay of the forces that shape the evolution of plant breeding systems.We find that all self-fertility mutations are beneficial in populations with few S-alleles and/or high rates of pollen limitation and they may result in stable polymorphisms when there are high levels of inbreeding depression and/or S-linked load as might occur in highly fragmented or low density populations and in those species prone to repeated bouts of colonisation and extinction.

Original languageEnglish (US)
Title of host publicationSelf-Incompatibility in Flowering Plants
Subtitle of host publicationEvolution, Diversity, and Mechanisms
PublisherSpringer-Verlag Berlin Heidelberg
Pages33-51
Number of pages19
ISBN (Electronic)9783540684862
ISBN (Print)9783540684855
DOIs
StatePublished - Jan 1 2008

All Science Journal Classification (ASJC) codes

  • Agricultural and Biological Sciences(all)
  • Biochemistry, Genetics and Molecular Biology(all)

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