Do nectar manipulative studies support cross-pollination hypothesis?

0317544 - ÚVGZ 2009 RIV RU eng G - Konferenční sborník (zahraniční konf.)
Jersáková, Jana
Do nectar manipulative studies support cross-pollination hypothesis?.
[Podporují experimentální studie s nektarem hypotézu o cizosprášení?]
Tver: Tverskoj gosudarstvennyj universitet, 2007. 229 s. Vestnik Tverskogo gosudarstvennogo universiteta. ISBN N. ISSN 1995-0136.
[IV INTERNATIONAL ORCHID WORKSHOP [0232635]. Tver (RU), 05.06.2007-10.06.2007]
Grant CEP: GA AV ČR KJB600870601
Výzkumný záměr: CEZ:AV0Z60870520
Klíčová slova: orchid * nectar * pollination
Kód oboru RIV: EH - Ekologie - společenstva

One explanation for the widespread absence of floral nectar in many orchids is that it causes pollinators to visit fewer flowers on non-rewarding plants, resulting in more outcrossed progeny and more efficient pollen export. In the last two decades, the cross-pollination hypothesis has been tested by several experiments, in which nectar was added or removed from the flowers of non-rewarding and rewarding orchids, respectively. On the basis of the literature survey, I will summarize the effects of nectar manipulation on male and female reproductive success of orchids, with emphasis on the incidence of self-pollination. The consequences of these results for the theory and future research will be presente

Příspěvek se týká syntézy výsledků plynoucích z experimentů manipulujících s přítomností nektaru u vstavačovitých
Trvalý link: http://hdl.handle.net/11104/0167160