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Plant Systematics and Evolution

, Volume 129, Issue 1–2, pp 31–44 | Cite as

Rates of cross-pollination inLycopersicon pimpinellifolium: Impact of genetic variation in floral characters

  • Charles M. Rick
  • Miguel Holle
  • Robbin W. Thorp
Article

Abstract

Cross-pollination was tested between different genotypes ofLycopersicon pimpinellifolium in an experimental plot situated in the southerly range of the species. Rates of cross-pollination were found to be highly correlated with flower size and were related to a lesser extent with degree of stigma exsertion. Comparisons of fertility suggest that exsertion of 1.5 mm or more from the anther tube orifice interferes with automatic self-pollination, thereby increasing rates of cross-pollination. A single species ofExomalopsis (Anthophoridae), observed to visit all tested genotypes ofL. pimpinellifolium, was responsible for most of the pollination. Other species of solitary bees and other bee families participated in cross-pollination.

Key words

Solanaceae Lycopersicon pimpinellifolium Hymenoptera Exomalopsis Rates of cross-pollination floral attractivity stigma position evolution of floral parameters 

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Copyright information

© Springer-Verlag 1978

Authors and Affiliations

  • Charles M. Rick
    • 1
  • Miguel Holle
    • 2
  • Robbin W. Thorp
    • 3
  1. 1.Department of Vegetable CropsUniversity of CaliforniaDavisUSA
  2. 2.Departamento de Suelos y CultivosCentro Agronomico Tropical de Investigación y EnsenañzaTurrialbaCosta Rica
  3. 3.Department of EntomologyUniversity of CaliforniaDavisUSA

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