Effects of CMS types and restorer alleles on plant performance in Plantago lanceolata L.: an indication for cost of restoration

A.A. De Haan, M.P.J. Hundscheid, A. Van Hinsberg

    Research output: Contribution to journal/periodicalArticleScientificpeer-review

    Abstract

    In gynodioecious species, male steriles co-occur with hermaphrodites. Usually, the male sterile trait is maternally inherited, hence it is called Cytoplasmic Male Sterility (CMS). Nuclear loci restore male fertility in combination with their 'own' specific cytoplasmic types. In theory, two fitness components are important for the maintenance of this breeding system: a fitness advantage of the male steriles, and costs of restoration. The costs of restoration are alleged negative pleiotropic effects of restorer alleles. In this study the effects of different CMS types on plant performance and the cost of restoration were assessed in two experiments with Plantago lanceolata L. Biomass production differed significantly between the CMS types studied. In order to assess the costs of restoration, hermaphrodites with or without restorer alleles for a CMS type other than its own were compared. The studied restorer alleles caused a reduction in weight per seed, but the number of seeds produced was unaffected. The estimated cost of restoration measured as reduction of seed biomass was 13% for restorer alleles for CMSI. However, in the second experiment no pleiotropic effects of restorer alleles were detected, either because the assumptions for the experimental set-up were not valid or the costs of restoration may not always be expressed. [KEYWORDS: Plantago lanceolata L.; gynodioecy; CMS; cost of restoration;maternal effects Cytoplasmic male-sterility; sex allocation; gynodioecy;coronopus; selection]
    Original languageEnglish
    Pages (from-to)803-820
    JournalJournal of Evolutionary Biology
    Volume10
    Issue number5
    DOIs
    Publication statusPublished - 1997

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