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Major Ecological Transitions in Wild Sunflowers Facilitated by Hybridization
Hybridization is frequent in many organismal groups, but its role in adaptation is poorly understood. In sunflowers, species found in the most extreme habitats are ancient hybrids, and new geneExpand
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Data Congruence and Phylogeny of the Papaveraceae s.l. Based on Four Data Sets: atpB and rbcL Sequences, trnK Restriction Sites, and Morphological Characters
Phylogenetic analyses of various combinations of atpB and rbcL sequence data, trnK restriction sites, and morphological characters of taxa representing the Papaveraceae s.l. (Pteridophyllaceae,Expand
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Systematic affinities of Rhizophoraceae and Anisophylleaceae, and intergeneric relationships within Rhizophoraceae, based on chloroplast DNA, nuclear ribosomal DNA, and morphology.
A cladistic analysis of sequences from the chloroplast gene rbcL was used to determine the systematic affinities of Rhizophoraceae and Anisophylleaceae. This analysis rejects close relationships ofExpand
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Cryptic speciation between Juniperus deltoides and Juniperus oxycedrus (Cupressaceae) in the Mediterranean
Analyses of individuals classically treated as Juniperus oxycedrus L. var. oxycedrus from Morocco, Portugal, Spain, France, Italy, Greece and Turkey, using DNA sequencing of nrDNA (ITS 1, 5.8S, ITSExpand
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Transgressive character expression in a hybrid sunflower species.
Diploid hybrid lineages often are ecologically distinct from their parental species. However, it is unclear whether this niche divergence is typically achieved via hybrid intermediacy, a mixture ofExpand
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The circumscription and phylogenetic relationships of Callitropsis and the newly described genus Xanthocyparis (Cupressaceae).
A new species of conifer was recently discovered in northern Vietnam. In a preliminary phylogenetic analysis of morphological data a possible sister species, Chamaecyparis nootkatensis (D. Don)Expand
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Phylogenetic Position and Floral Function of Siparuna (Siparunaceae: Laurales)
Nucleotide sequences for two chloroplast genome regions, the rbcL gene and the trnL-trnF spacer region, were obtained for 22 genera and 30 species representing all major lineages of Laurales, with aExpand
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Phenotypic Differentiation between Three Ancient Hybrid Taxa and Their Parental Species
The primary requirement for a new diploid species to arise via hybridization is ecological divergence from its parental species. Ecological divergence protects the nascent hybrid species fromExpand
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Origin(s) of the diploid hybrid species Helianthus deserticola (Asteraceae).
Homoploid hybrid speciation has traditionally been considered a rare event, dependent on the establishment of both a novel, balanced genotype and reproductive isolating barriers between the newExpand
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The concordance of terpenoid, ISSR and RAPD markers, and ITS sequence data sets among genotypes: an example from Juniperus
Twelve individual genotypes selected from Juniperus populations, varieties and species were analyzed using ITS sequences, RAPDs, ISSRs, and leaf volatile terpenoids. These four data sets, allExpand
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