2013
DOI: 10.1111/evo.12123
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The Role of Inbreeding Depression and Mating System in the Evolution of Heterostyly

Abstract: We investigated the role of morph-based differences in the expression of inbreeding depression in loss of the mid-styled morph from populations of tristylous Oxalis alpina. The extent of self-compatibility (SC) of reproductive morphs, the degree of self-fertilization, and the magnitude of inbreeding depression were investigated in three populations of O. alpina differing in their tristylous incompatibility relationships. All three populations exhibited significant inbreeding depression. In two populations with… Show more

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Cited by 20 publications
(35 citation statements)
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“…The PCR reactions were performed as described in Weber et al. (2013) in a total of 12.5 μl volume (11.5 μl + 1 μl of DNA): 1× PCR buffer, 25.0 μg/ml BSA, 0.24 μmol/L of each (forward and reverse) primer (10 μm), 2 mmol/L (for Oxa17, 62, 81, and 84) or 3 mmol/L (for Oxa25, 41, and 43) MgCl 2 , 0.15 mmol/L dNTPs, 0.5 U JumpStart Taq DNA Polymerase (Sigma), and 5–50 ng DNA template. An Applied Biosystems thermal cycler (GeneAmp PCR System 9700) and ABI PRISM 3130xl sequencer, respectively, were used for amplifications and to run microsatellite PCR reactions combined with an internal size standard Naurox (DeWoody et al., 2004).…”
Section: Methodsmentioning
confidence: 99%
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“…The PCR reactions were performed as described in Weber et al. (2013) in a total of 12.5 μl volume (11.5 μl + 1 μl of DNA): 1× PCR buffer, 25.0 μg/ml BSA, 0.24 μmol/L of each (forward and reverse) primer (10 μm), 2 mmol/L (for Oxa17, 62, 81, and 84) or 3 mmol/L (for Oxa25, 41, and 43) MgCl 2 , 0.15 mmol/L dNTPs, 0.5 U JumpStart Taq DNA Polymerase (Sigma), and 5–50 ng DNA template. An Applied Biosystems thermal cycler (GeneAmp PCR System 9700) and ABI PRISM 3130xl sequencer, respectively, were used for amplifications and to run microsatellite PCR reactions combined with an internal size standard Naurox (DeWoody et al., 2004).…”
Section: Methodsmentioning
confidence: 99%
“…We found average null allele frequencies of 0.16, 0.02, 0.001, 0.02, 0.13, 0.10, 0.09, and 0.02 for loci Oxa17, 25, 41, 43, 63, 81, 84, and 88, respectively. The average population selfing rate of 0.2, as estimated in our previous study (Weber et al., 2013), was used when calculating the null allele frequencies. Given that null allele frequencies did not exceed 0.2 with an overall multilocus average of 0.07, all loci were included in the data analysis (Oddou‐Muratorio, Vendramin, Buiteveld, & Fady, 2009).…”
Section: Methodsmentioning
confidence: 99%
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“…Esto implica que el morfo intermedio debería presentar el nivel más alto de endogamia y de depresión endogámica, si se pierde la incompatibilidad heteromórfi ca. Weber et al (2013) probaron esta hipótesis al demostrar un incremento en la autocompatibilidad del morfo intermedio asociado a una mayor probabilidad de autofecundación durante la transición tristilia-distilia en O. alpina. Sin embargo, la depresión endogámica fue muy baja, probablemente como consecuencia de la purga génica o de que esta especie es tetraploide (Weber, 2012).…”
Section: Discussionunclassified
“…Founder events and genetic drift commonly result in biased morph ratios (anisoplethy), especially in species in which features of the life history (e.g., clonality and episodic sexual recruitment) slow progress to the isoplethic equilibrium ( Ornduff , 1972 ;Morgan and Barrett, 1988 ;Eckert and Barrett, 1995 ). Although less commonly documented, morph-specifi c diff erences in reproductive fi tness can also cause biased morph ratios in heterostylous populations ( Barrett et al, 1983 ;Brys et al, 2008a ;Weber et al, 2013 ). Th us, determining the causes of anisoplethic morph ratios in heterostylous populations is a complex problem that usually commences with a study of the reproductive correlates of morph-ratio variation, an approach we use here.…”
mentioning
confidence: 99%