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Pollen placement and reproductive isolation between two brazilianPolygala species (Polygalaceae)

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Abstract

Polygala vauthieri andP. monticola var.brizoides have secondary pollen presentation from a basket-like structure on the style apex. This basket is loaded after the first visit by a bee. Pollen reception, therefore, can precede the issue of pollen. A sticky stigma secretion glues the pollen from the basket under the head of the bee visitor in an exactly predetermined spot on the left side only. This position mostly forms a kind of safe spot, where the bee can not remove the pollen. The exact position on the bee's head is determined by the species specific distance between style tip and nectary in the visited flower. In this way the two sympatric species deposit the pollen 2 mm apart on the visitor and so can avoid hybridization pollination, while being visited by the same group of bees.

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Literature Cited

  • Brantjes, N. B. M., van der Pijl, L., 1980: Pollination mechanisms in Polygalaceae. — Acta Bot. Neerl.29, 56–57.

    Google Scholar 

  • Ducke, A., 1901: Beobachtungen über Blütenbesuch, Erscheinungszeit etc. der bei Pará vorkommenden Bienen. — Z. Syst. Hymen. u. Dipter.1, 25–32, 49–67.

    Google Scholar 

  • Ducke, A., 1902: Beobachtungen über Blütenbesuch, Erscheinungszeit, etc. der bei Pará vorkommenden Bienen. — Allg. Z. Entomol.18, 321–326, 360–368, 400–405, 417–422.

    Google Scholar 

  • Faegri, K., van der Pijl, L., 1979: The Principles of Pollination Ecology. 3d. ed. — Oxford: Pergamon Press.

    Google Scholar 

  • Goebel, K., 1923: Organographie der Pflanzen, insbesondere der Archegoniaten und Samenpflanzen. Teil III, Heft II. — 2nd ed. — Jena: Gustav Fischer Verlag.

    Google Scholar 

  • —, 1933: Organographie der Pflanzen, insbesondere der Archegoniaten und Samenpflanzen. Teil III. 3rd ed. — Jena: Gustav Fischer Verlag.

    Google Scholar 

  • Hildebrand, F., 1867: Frederigo Delpino's Beobachtungen über die Bestäubungsvorrichtungen bei den Phanerogamen. Mit Zusätzen und Illustrationen. — Bot. Z.25, 266–270, 274–278, 282–287.

    Google Scholar 

  • Kennedy, H., 1978: Systematics and pollination of the “closed-flowered” species ofCalathea (Maranthaceae). — Univ. Calif. Publ. Bot.71.

  • Knuth, P., Loew, E., 1904, 1905: Handbuch der Blütenbiologie III, Die bisher in außereuropäischen Gebieten gemachten blütenbiologischen Beobachtungen. — Leipzig: Wilhelm Engelmann Verlag.

    Google Scholar 

  • MacLeod, J., 1891: De Pyreneenbloemen en hare bevruchting door insecten, eene bijdrage tot de bloemengeographie. — Bot. Jaarb., Gent,3, 260–485.

    Google Scholar 

  • Müller, H., 1873: Die Befruchtung der Blumen durch Insecten und die gegenseitigen Anpassungen beider, Ein Beitrag zur Kenntnis des ursächlichen Zusammenhanges in der organischen Natur. — Leipzig.

  • Pijl, L. van der, 1978: Reproductive integration and sexual disharmony in floral functions. — In:Richards, A. J., (Ed.): The Pollination of Flowers by Insects, 79–88. — London: Acad. Press.

    Google Scholar 

  • Schoenichen, W., 1922: Mikroskopisches Prakticum der Blütenbiologie. — Leipzig: Quelle & Meyer Verlag.

    Google Scholar 

  • Scott-Elliot, G. F., 1891: Notes on the fertilisation of South African and Madagascar flowering plants. — Ann. Bot.5, 333–405.

    Google Scholar 

  • Vogel, S., 1954: Blütenbiologische Typen als Elemente der Sippengliederung, dargestellt an Hand der Flora Südafrikas. — Botan. Stud.1. — Jena: G. Fischer.

    Google Scholar 

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Brantjes, N.B.M. Pollen placement and reproductive isolation between two brazilianPolygala species (Polygalaceae). Pl Syst Evol 141, 41–52 (1982). https://doi.org/10.1007/BF01006478

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