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Evolution of male/female interactions in Silene alba (Miller) Kraus

Gesuchsteller/in Bernasconi Giorgina
Nummer 100331
Förderungsinstrument Projektförderung (Abt. I-III)
Forschungseinrichtung
Institut für Evolutionsbiologie und Umweltwissenschaften Universität Zürich
Département d'Ecologie et d'Evolution Faculté de Biologie et de Médecine Université de Lausanne
Hochschule Universität Zürich - ZH
Hauptdisziplin Botanik
Beginn/Ende 01.05.2003 - 31.08.2006
Bewilligter Betrag 254'301.00
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Alle Disziplinen (2)

Disziplin
Botanik
Oekologie

Keywords (3)

POLLEN COMPETITION; EVOLUTIONARY ECOLOGY; PLANT POPULATION BIOLOGY

Lay Summary (Englisch)

Lead
Lay summary
Males competing via their gametes are under selection to increase siring success even at a cost to the female, e.g. by influencing receptivity, fertilization, or investment in progeny away from the female optimum. Male and female evolutionary optima can thus diverge when polyandry occurs. This can lead to antagonistic selection on traits favoured in one sex but disfavoured in the other and rapid coevolution between the sexes. This theory is extremely timely in the evolutionary ecology of animals, while to date no tests have been carried out in plants. We investigate male and female influence on paternity patterns and on stigmatic receptivity by examining intraspecific interactions between male and female function in the white campion, a dioecious plant with XY-sex determination. The aims are to assess whether there is genetic variation within populations in male and female influence on paternity and postpollination responses, assess whether geographically separated populations diverged in reproductive traits, conduct experimental hand-pollinations and use molecular analysis of paternity to unravel the mechanisms.
Direktlink auf Lay Summary Letzte Aktualisierung: 21.02.2013

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Nummer Titel Start Förderungsinstrument
102944 Evolution of male/female interactions in Silene latifolia 01.10.2004 SNF-Förderungsprofessuren

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