2013
DOI: 10.1111/evo.12269
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GENETIC ARCHITECTURE OF ISOLATION BETWEEN TWO SPECIES OFSILENEWITH SEX CHROMOSOMES AND HALDANE'S RULE

Abstract: Examination of the genetic architecture of hybrid breakdown can provide insight into the genetic mechanisms of commonlyobserved isolating phenomena such as Haldane's rule. We used line-cross analysis to dissect the genetic architecture of divergence between two plant species that exhibit Haldane's rule for male sterility and rarity, Silene latifolia and Silene diclinis. We made 15 types of crosses, including reciprocal F 1 , F 2 , backcrosses, and later-generation crosses, grew the seeds to flowering, and meas… Show more

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Cited by 26 publications
(55 citation statements)
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References 79 publications
(126 reference statements)
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“…As we detected significant variation in the effect of cross type between line pairs within-population set (Table 1), we performed separate joint scaling analyses for each of the four line pairs. Our line crosses generated eight different cross types, each with different expected contributions of additive, dominant, epistatic, maternal genetic and cytoplasmic effects (Supplementary Table S1; see also Demuth et al, 2014). Maternal additive effects (additive genetic effect of maternal genotype on progeny fitness, independent of progeny genotype) are expected to yield similar consequences as cytoplasmic effects, except that they would not be expressed in the F 2 (maternal parent was an F 1 ).…”
Section: Statistical Analysesmentioning
confidence: 99%
See 3 more Smart Citations
“…As we detected significant variation in the effect of cross type between line pairs within-population set (Table 1), we performed separate joint scaling analyses for each of the four line pairs. Our line crosses generated eight different cross types, each with different expected contributions of additive, dominant, epistatic, maternal genetic and cytoplasmic effects (Supplementary Table S1; see also Demuth et al, 2014). Maternal additive effects (additive genetic effect of maternal genotype on progeny fitness, independent of progeny genotype) are expected to yield similar consequences as cytoplasmic effects, except that they would not be expressed in the F 2 (maternal parent was an F 1 ).…”
Section: Statistical Analysesmentioning
confidence: 99%
“…Our methods closely follow Demuth et al (2014), but we examined a wider range of possible models to be sure that the order of introduction of terms in a stepwise procedure did not influence the overall results. For each of the line pairs, we fitted least-square regressions of the composite genetic effects contributing to fitness differences among the eight cross types (Supplementary Tables S2-S4).…”
Section: Statistical Analysesmentioning
confidence: 99%
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“…35S rDNA sites (green), 5S rDNA sites (yellow), ancestral pseudoautosomal segments (blue) and so far the only example of Haldane's rule in plants was described for Silene hybrids by Brothers and Delph (2010). Further studies on the hybrids between S. latifolia and S. diclinis (differing in the sex chromosome system) showed the influence of sex chromosome mismatches on extreme rarity of hybrid males in some F2 crosses (Demuth et al 2013). The sex chromosome systems in these species (simple vs. polymorphic one) resemble those occurring in two R. hastatulus races, but the multiple XX/X 1 X 2 Y 1 Y 2 system of S. diclinis differs from XY 1 Y 2 occurring in the North Carolina race.…”
Section: Introductionmentioning
confidence: 99%