Natural selection on floral traits through male and female function in wild populations of the heterostylous daffodil Narcissus triandrus

Evolution; International Journal of Organic Evolution
Kathryn A Hodgins, Spencer C H Barrett

Abstract

Measurements of natural selection in hermaphrodite populations require the analysis of performance through both female and male sex functions. Here, we investigate selection on three floral traits: flower number, flower length, and corona width through both sex functions in natural populations of the tristylous daffodil Narcissus triandrus. Selection through female function was examined in six populations, and in two of these we also estimated male selection gradients using multilocus microsatellite genotyping of parents and offspring. We detected significant directional selection for flower number through female function, and significant stabilizing selection for corona width and flower length through male function. Variation in male reproductive success was strongly influenced by the distance between mates and was significantly higher than variation in female reproductive success in one population, a result consistent with Bateman's principle. However, variation through both sex functions was similar in the other population and there was a significant negative correlation between female and male fitness indicating sex-specific trade-offs in reproductive success. Selection on floral design in N. triandrus was stronger through ...Continue Reading

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Citations

Dec 17, 2009·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Spencer C H Barrett
Jan 6, 2010·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Spencer C H Barrett
Jul 9, 2014·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Rocío Pérez-BarralesJuan Arroyo
Nov 26, 2015·Evolution; International Journal of Organic Evolution·Emily J Austen, Arthur E Weis
Oct 15, 2014·Evolution; International Journal of Organic Evolution·Crispin Y Jordan, Tim Connallon
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Jun 2, 2009·Annals of Botany·Randall J MitchellJeffrey D Karron
Feb 28, 2017·The New Phytologist·Judith TrunschkeJon Ågren
Jun 21, 2018·Molecular Ecology·Sylvie Oddou-MuratorioEtienne K Klein
Mar 24, 2020·Evolution; International Journal of Organic Evolution·Juannan ZhouCharles B Fenster
Apr 24, 2012·Evolution; International Journal of Organic Evolution·Mason W Kulbaba, Anne C Worley
Mar 5, 2020·Evolutionary Bioinformatics Online·Zhu-Qing ChenYuan-Wen Duan
Aug 29, 2018·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Colin OlitoCrispin Y Jordan

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Methods Mentioned

BETA
PCR
genotyping

Software Mentioned

GeneMapper
SAS
PatQuest

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