Advertisement

Plant Systematics and Evolution

, Volume 137, Issue 3, pp 195–201 | Cite as

Change of adaptations from entomophily to autogamy inParahebe linifolia (Scrophulariaceae)

  • P. J. Garnock-Jones
Article

Abstract

Measurements of 16 inflorescence and floral characters from 5 populations ofParahebe linifolia (3 of entomophilous subsp.linifolia; 2 of autogamous subsp.brevistylis) were analysed. Discontinuous variation of three characters associated with the mechanisms of pollination suggests these are under strong selection towards different optima in each subspecies. Variation which is continuous and associated with the type of pollination in 4 characters mostly concerned with display is thought to result from selection for metabolic economies, counteracted strongly in subsp.linifolia, but less so in subsp.brevistylis, by selection for display. Nine more characters vary in a way not known to be associated with the two pollination systems.

Key words

Scrophulariaceae Parahebe linifolia Entomophily autogamy floral characters natural selection pollination 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Arroyo, M. T. Kalin, 1973: Chiasma frequency evidence on the evolution of autogamy inLimnanthes floccosa (Limnanthaceae). — Evolution27, 679–688.Google Scholar
  2. Darwin, C., 1876: The Effects of Cross and Self Fertilization in the Vegetable Kingdom. — London: Murray.Google Scholar
  3. Ehrenfeld, J., 1976: Reproductive biology of three species ofEuphorbia subgenusChamaesyce (Euphorbiaceae). — Am. J. Bot.63, 406–413.Google Scholar
  4. Garnock-Jones, P. J., 1976a: Infraspecific taxonomy ofParahebe linifolia (Scrophulariaceae). — N. Z. J. Bot.14, 285–289.Google Scholar
  5. —, 1976b: Breeding systems and pollination in New ZealandParahebe (Scrophulariaceae). — N. Z. J. Bot.14, 291–298.Google Scholar
  6. Henslow, G., 1879: On the self-fertilization of plants. — Trans. Linn. Soc. Lond. Second series, Botany1, 317–398.Google Scholar
  7. Lloyd, D. G., 1965: Evolution of self-compatibility and racial differentiation inLeavenworthia (Cruciferae). — Contr. Gray Herb. Harv.195, 1–134.Google Scholar
  8. —, 1979: Some reproductive factors affecting the selection of self-fertilization in plants. — Am. Nat.113, 67–79.Google Scholar
  9. Ornduff, R., 1969: Reproductive biology in relation to systematic. — Taxon18, 121–133.Google Scholar
  10. Rollins, R. C., 1963: The evolution and systematics ofLeavenworthia (Cruciferae). — Contr. Gray Herb. Harv.192, 1–98.Google Scholar
  11. Scheffé, H., 1953: A method for judging all contrasts in the analysis of variance. — Biometrika40, 87–104.Google Scholar

Copyright information

© Springer-Verlag 1981

Authors and Affiliations

  • P. J. Garnock-Jones
    • 1
  1. 1.Botany DivisionDepartment of Scientific & Industrial ResearchChristchurchNew Zealand

Personalised recommendations