Reprodukční úspěch a variace pohlaví u deceptivních a nektar nabízejících orchidejí

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F04%3A00005332" target="_blank" >RIV/60076658:12310/04:00005332 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Reproductive success and gender variation in nectarless vs. rewarding orchids

Popis výsledku v původním jazyce

In hermaphroditic plants, the number of flowers in the inflorescence and the presence of a reward may have a differential effect on male (pollen dissemination) and female (pollen deposition) reproductive success, and thus on the evolution of floral features. Two rewarding and one nectarless orchid species were used here to test the hypothesis that a large inflorescence serves primarily to increase male reproductive success ('male function hypothesis'). We have found that both in rewarding and in nectarless species, the rate of increase of male reproductive success with the number of flowers is not significantly different from that of female reproductive success, which does not support the male function hypothesis. As the lack of reward causes lower reproductive success in nectarless orchids, we hypothesized that in nectarless species the average time interval between flower opening and its first visit by a pollinator is longer, compared with rewarding ones. Our data confirmed this hypo

Název v anglickém jazyce

Reproductive success and gender variation in nectarless vs. rewarding orchids

Popis výsledku anglicky

In hermaphroditic plants, the number of flowers in the inflorescence and the presence of a reward may have a differential effect on male (pollen dissemination) and female (pollen deposition) reproductive success, and thus on the evolution of floral features. Two rewarding and one nectarless orchid species were used here to test the hypothesis that a large inflorescence serves primarily to increase male reproductive success ('male function hypothesis'). We have found that both in rewarding and in nectarless species, the rate of increase of male reproductive success with the number of flowers is not significantly different from that of female reproductive success, which does not support the male function hypothesis. As the lack of reward causes lower reproductive success in nectarless orchids, we hypothesized that in nectarless species the average time interval between flower opening and its first visit by a pollinator is longer, compared with rewarding ones. Our data confirmed this hypo

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EH - Ekologie – společenstva

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2004

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

International Journal of Plant Sciences

ISSN

1058-5893

e-ISSN

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Svazek periodika

2004

Číslo periodika v rámci svazku

165

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

779-785

Kód UT WoS článku

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EID výsledku v databázi Scopus

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