Effect of nectar supplementation on male and female components of pollination success in the deceptive orchid Dactylorhiza sambucina

0317465 - ÚVGZ 2009 RIV FR eng J - Článek v odborném periodiku
Jersáková, Jana - Johnson, S.D. - Kindlmann, Pavel - Pupin, A.C.
Effect of nectar supplementation on male and female components of pollination success in the deceptive orchid Dactylorhiza sambucina.
[Vliv přidání nektaru na opylování deceptivního druhu Dactylorhiza sambucina.]
Acta Oecologica-International Journal of Ecology. Roč. 33, - (2008), s. 300-306. ISSN 1146-609X. E-ISSN 1873-6238
Grant CEP: GA MŠMT(CZ) LC06073
Výzkumný záměr: CEZ:AV0Z60870520
Klíčová slova: Dactylorhiza sambucina * Deception * Nectar supplementation * Pollination * Pollen removal and deposition
Kód oboru RIV: EH - Ekologie - společenstva
Impakt faktor: 1.456, rok: 2008

Many orchids lack floral nectar rewards and therefore rely on deception to attract pollinators. To determine the effect that a mutation for nectar production would have on overall pollination success of the deceptive orchid Dactylorhiza sambucina, we recorded pollen deposition and removal in flowers of plants that had either been supplemented with an artificial nectar solution or left unmanipulated as controls. Nectar supplementation resulted in significant increases in the proportion of flowers pollinated, regardless of morph colour and the density of plants supplemented in the population. However, nectar supplementation had a significant positive effect on pollinaria removal only for the yellow morph in one experiment in which a low proportion of plants were supplemented. Thus a mutation for nectar production would have a positive effect on overall pollination success in D. sambucina, particularly the female component.

Mnohé orchideje nenabízí nektar a při klamání opylovačů spoléhají na svou atraktivitu. Abychom zjistili, jaký vliv by měla mutace v produkci nektaru na úspěšnost opylování deceptivního druhu orchideje Dactylorhiza sambucina, zaznamenali jsme příjem a výdej pylu v květech rostlin, do kterých byl přidán umělý nektar, a srovnali jsme jej s transportem pylu u kontrolních rostlin.
Trvalý link: http://hdl.handle.net/11104/0167104