Notes on the self-pollination in Dendrobium biflorum (Orchidales, Dendrobiinae)

• Autorzy: Kowalkowska A. K. , Margonska H. B.
• Języki publikacji: EN

Abstrakty

EN

The conditions favouring self-pollination are determined for a species of Dendrobium Sw. A survey of gynostemium micromorphology in collected flowers of Dendrobium biflorum revealed two stages of a unique form of autogamy: on germination of pollen tetrads, pollen tubes reached the stigmatic region without the pollen being displaced from the anther locules. This is the first time for this type of autogamy to be reported in Dendrobium biflorum. Pollen grains germinated directly from the locules, bypassing the stigma or falling or sliding down onto the stigmatic surface. The pollen tubes were long and reached the stylar canal. On The Society Islands, differences in exposure of the habitats to weather conditions and altitude gradients influence both composition and form of the vegetation, as well as the occurrence of pollinators. The form of autogamy described here may be the usual method of pollination found on The Society Islands (and even the whole of French Polynesia), where suitable pollinators are absent and/or growth conditions stressful.

Słowa kluczowe

EN

self-pollination; Dendrobium biflorum; Orchidales; Dendrobiinae; gynostemium; micromorphology; gynostemium structure; autogamy; Orchidaceae

• Wydawca: -
• Czasopismo: Acta Societatis Botanicorum Poloniae
• Rocznik: 2012
• Tom: 81
• Numer: 3
• Opis fizyczny: p.223-228,fig.,ref.

Twórcy

autor

Kowalkowska A. K.

• Department of Plant Cytology and Embryology, University of Gdansk, Wita Stwosza 59, 80-308 Gdansk, Poland

autor

Margonska H. B.

Bibliografia

• 1. Darwin C. The various contrivances by which orchids are fertilized by insects. London: John Murray; 1890.
• 2. Pijl L, Dodson CH. Orchid flowers: their pollination and evolution. Coral Gables FL: University of Miami Press; 1966.
• 3. Dressler RL. Phylogeny and classification of the orchid family. Portland OR: Dioscorides Press; 1993.
• 4. Tremblay RL, Ackerman JD, Zimmerman JK, Calvo RN. Variation in sexual reproduction in orchids and its evolutionary consequences: a spasmodic journey to diversification.Biol J Linn Soc. 2005;84(1):1–54. http://dx.doi.org/10.1111/j.1095-8312.2004.00400.x
• 5. Catling PM. Auto-pollination in the Orchidaceae. In: Arditti J, editor. Orchid biology: reviews and perspectives. Portland OR: Timber Press; 1990. p. 121–158.
• 6. Bonatti PM, Sgarbi E, Del Prete C. Gynostemium micromorphology and pollination in Epipactis microphylla (Orchidaceae). J Plant Res. 2006;119(5):431–437. http:// dx.doi.org/10.1007/s10265-006-0001-z
• 7. Feder N, O’Brien TP. Plant microtechnique: some principles and new methods. Am J Bot. 1968;55(1):123. http:// dx.doi.org/10.2307/2440500
• 8. Ruzin SE. Plant microtechnique and microscopy. New York: Oxford University Press; 1999.
• 9. Kowalkowska AK, Margońska HB. Diversity of labellar micromorphological structures in selected species of Malaxidinae (Orchidales). Acta Soc Bot Pol. 2009;78(2):141–150.
• 10. Kowalkowska AK, Margońska HB, Kozieradzka-Kiszkurno M. Comparative anatomy of the lip spur and additional lateral sepal spurs in a three-spurred form (F. fumeauxiana) of Anacamptis pyramidalis. Acta Biol Cracov Ser Bot. 2010;52(1):13–18. http://dx.doi.org/10.2478/v10182-010-0002-z
• 11. Kowalkowska AK, Margońska HB, Kozieradzka-Kiszkurno M, Bohdanowicz J. Studies on the ultrastructure of a three-spurred fumeauxiana form of Anacamptis pyramidalis. Plant Syst Evol. 2012;298:1025–1035. http://dx.doi. org/10.1007/s00606-012-0611-y
• 12. Anderson WR. Cryptic self-fertilization in the Malpighiaceae. Science. 1980;207(4433):892–893. http://dx.doi. org/10.1126/science.207.4433.892
• 13. Lord EM. Cleistogamy: a tool for the study of floral morphogenesis, function and evolution. Bot Rev. 1981;47(4):421–449. http://dx.doi.org/10.1007/BF02860538
• 14. Pacini E, Franchi GG. Germination of pollen inside anthers in some non-cleistogamous species. Caryologia. 1982;35:205–215.
• 15. Mayers AM, Lord EM. Comparative flower development in the cleistogamous species Viola odorata. III. A histological study. Bot Gaz. 1984;145(1):83. http://dx.doi. org/10.1086/337430
• 16. Caiola MG, Brandizzi F, Canini A. Hermodactylus tuberosus L. (Iridaceae) pollen organisation before and after anther dehiscence. Plant Biosyst. 2000;134(3):353–364. http:// dx.doi.org/10.1080/11263500012331350505
• 17. Margońska HB, Szlachetko DL. Orchidaceae of Tahiti (Polynesie Française). Gdańsk: Gdańsk University Press; 2010.