Article

Plant Systematics and Evolution

, Volume 194, Issue 1, pp 1-8

Self-compatibility in distylousHedyotis salzmannii (Rubiaceae)

  • G. Magaly RiverosAffiliated withInstituto de Botánica, Facultad de Ciencias, Universidad Austral de Chile
  • , O. Rosa BarríaAffiliated withInstituto de Botánica, Facultad de Ciencias, Universidad Austral de Chile
  • , P. Ana María HumañaAffiliated withInstituto de Botánica, Facultad de Ciencias, Universidad Austral de Chile

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Abstract

Hedyotis salzmannii (Rubiaceae) is distylous. Experimental pollination revealed that both morphs are self-compatible. However, the thrum morph proved to be more self-compatible. Hand cross-pollination between different plants of the same floral form produced less seed-sets per pollination than hand cross-pollination between pin and thrum or thrum and pin pollination. Two species ofHymenoptera, oneApidae and oneHalictidae, and two species ofDiptera (Syrphidae) were observed as pollinators.

Key words

Rubiaceae Hedyotis salzmannii Flower morphology pollination