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Biologia Plantarum

, Volume 51, Issue 1, pp 185–188 | Cite as

Multigenerational inbreeding in Succisa pratensis: Effects on fitness components

  • F. X. Picó
  • C. Mix
  • N. J. Ouborg
  • J. M. Van Groenendael
Brief Communication

Abstract

We examined the effects of repeated inbreeding on fitness components of the long-lived perennial Succisa pratensis (Dipsacaceae). Plants from six populations differing in size were used to establish lines with expected inbreeding coefficients f of 0, 0.5 and 0.75. The effects of different inbreeding levels were measured for seed set, seed mass, percentage germination and seedling relative growth rate. Seed set decreased following one generation of inbreeding and seedling growth rate decreased after two generations of inbreeding. Our study indicated that the mutational load is difficult to purge and that continued inbreeding tends to affect important traits in S. pratensis. Although the partial dominance hypothesis for inbreeding depression seems to account for the results, the overdominance hypothesis cannot be ruled out completely. Overall, we conclude that the response of a long-lived plant, such as S. pratensis, to repeated inbreeding does not differ from that of other plant species with shorter life spans, surely because the mechanisms that account for inbreeding depression are universal for all plant species.

Additional key words

deleterious mutations inbreeding depression purging repeated inbreeding 

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References

  1. Barrett, S.C.H., Charlesworth, D.: Effects of a change in the level of inbreeding on the genetic load.-Nature 352: 522–524, 1991.PubMedCrossRefGoogle Scholar
  2. Byers, D.L., Waller, D.M.: Do plant populations purge their genetic load? Effects of population size and mating history on inbreeding depression.-Annu. Rev. Ecol. Evol. 30: 479–513, 1999.CrossRefGoogle Scholar
  3. Carr, D.E, Dudash, M.R.: Recent approaches into the genetic basis of inbreeding depression in plants.-Phil. Trans. roy. Soc. London B 358: 1071–1084, 2003.PubMedCrossRefGoogle Scholar
  4. Charlesworth, D., Charlesworth, B.: The genetic basis of inbreeding depression.-Genet. Res. 74: 329–340, 1999.PubMedCrossRefGoogle Scholar
  5. Dudash, M.R., Carr, D.E., Fenster C.B.: Five generations of enforced selfing and outcrossing in Mimulus guttatus: Inbreeding depression variation at the population and family level.-Evolution 51: 54–65, 1997.CrossRefGoogle Scholar
  6. Holsinger, K.E.: Inbreeding depression and the evolution of plant mating systems.-Trends Ecol. Evol. 6: 307–308, 1991.CrossRefGoogle Scholar
  7. Husband, B.C., Schemske, D.W.: Evolution and the magnitude and timing of inbreeding depression in plants.-Evolution 50: 54–70, 1996.CrossRefGoogle Scholar
  8. Koelewijn, H.P.: Effects of different levels of inbreeding on progeny fitness in Plantago coronopus.-Evolution 52: 692–702, 1998.CrossRefGoogle Scholar
  9. Lande, R., Schemske, D.W., Schultz, S.T.: High inbreeding depression, selective interference among loci, and the threshold selfing rate for purging recessive lethal mutations.-Evolution 48: 965–978, 1994.CrossRefGoogle Scholar
  10. Latta, R., Ritland, K.: The relationship between inbreeding depression and prior inbreeding among populations of four Mimulus taxa.-Evolution 48: 806–817, 1994.CrossRefGoogle Scholar
  11. McCall, C., Waller, D.M., Mitchell-Olds, T. Effects of serial inbreeding on fitness components in Impatiens capensis.-Evolution 48: 818–827, 1994.CrossRefGoogle Scholar
  12. Mix, C., Picó, F.X., Van Groenendael, J.M., Ouborg, N.J.: Inbreeding and soil conditions affect dispersal and components of performance of two plant species in fragmented landscapes.-Basic appl. Ecol. 7: 59–69, 2006.CrossRefGoogle Scholar
  13. Picó, F.X., Ouborg, N.J., Van Groenendael, J.M.: An evaluation of the extent of among-family variation in inbreeding variation in the perennial herb Scabiosa columbaria (Dipsacaceae).-Amer. J. Bot. 91: 1183–1189, 2004.Google Scholar
  14. Vogler, D.W., Filmore, K., Stephenson, A.G.: Inbreeding depression in Campanula rapunculoides L. I. A comparison of inbreeding depression in plants derived from strong and weak self-incompatibility phenotypes.-J. Evol. Biol. 12: 483–494, 1999.CrossRefGoogle Scholar

Copyright information

© Institute of Experimental Botany, ASCR 2007

Authors and Affiliations

  • F. X. Picó
    • 1
  • C. Mix
    • 2
  • N. J. Ouborg
    • 2
  • J. M. Van Groenendael
    • 2
  1. 1.Center for Ecological Research and Forestry Applications (CREAF)Autonomous University of BarcelonaBellaterraSpain
  2. 2.Department of EcologyRadboud Nijmegen UniversityNijmegenThe Netherlands

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