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Statements

Subject Item
n2:RIV%2F67179843%3A_____%2F04%3A00029136%21RIV06-AV0-67179843
rdf:type
n10:Vysledek skos:Concept
dcterms:description
In hermaphroditic plants, the number of flowers in the inflorescence and the presence of a reward may have a differential effect on male and female 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. 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. Since 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 hypothesis. In hermaphroditic plants, the number of flowers in the inflorescence and the presence of a reward may have a differential effect on male and female 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. 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. Since 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 hypothesis. Reprodukční úspěch a variace genderu u orchidejí
dcterms:title
Reproductive success and sex variation in nectarless and rewarding orchids Reproductive success and sex variation in nectarless and rewarding orchids Reprodukční úspěch a variace genderu u orchidejí
skos:prefLabel
Reprodukční úspěch a variace genderu u orchidejí Reproductive success and sex variation in nectarless and rewarding orchids Reproductive success and sex variation in nectarless and rewarding orchids
skos:notation
RIV/67179843:_____/04:00029136!RIV06-AV0-67179843
n4:strany
779;785
n4:aktivita
n8:Z n8:P
n4:aktivity
P(GA206/00/1124), P(IAA6087301), Z(AV0Z6087904)
n4:cisloPeriodika
-
n4:dodaniDat
n6:2006
n4:domaciTvurceVysledku
n18:5630231 n18:2861119
n4:druhVysledku
n13:J
n4:duvernostUdaju
n5:S
n4:entitaPredkladatele
n14:predkladatel
n4:idSjednocenehoVysledku
584370
n4:idVysledku
RIV/67179843:_____/04:00029136
n4:jazykVysledku
n12:eng
n4:klicovaSlova
orchids
n4:klicoveSlovo
n16:orchids
n4:kodStatuVydavatele
US - Spojené státy americké
n4:kontrolniKodProRIV
[28ECB429B8FE]
n4:nazevZdroje
International Journal of Plant Sciences
n4:obor
n15:EF
n4:pocetDomacichTvurcuVysledku
2
n4:pocetTvurcuVysledku
2
n4:projekt
n17:GA206%2F00%2F1124 n17:IAA6087301
n4:rokUplatneniVysledku
n6:2004
n4:svazekPeriodika
165
n4:tvurceVysledku
Kindlmann, Pavel Jersáková, Jana
n4:zamer
n9:AV0Z6087904
s:issn
1058-5893
s:numberOfPages
7