Reference health
Comparisons of phylogenetic hypotheses among different data sets in dwarf dandelions (Krigia, Asteraceae): Additional information from internal transcribed spacer sequences of nuclear ribosomal DNA
65/65 checkable references clean · checked 2026-08-08
Every reference with a DOI in the deposited reference list resolved to a known work in Crossref or DataCite at the dated check, and none carried a retraction, withdrawal, or removal notice.
17 without a DOI — not checked. A reference deposited without a DOI is never matched by title or guessed at; it stays outside the checked set, and this line discloses that.
The 65 checked references that resolve
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Relative rates of divergence of spacer and gene sequences within the rDNA region of species in the Triticeae: Implications for the maintenance of homogeneity of a repeated gene family
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Nucleotide sequence of the internal transcribed spacer region of rDNA in the primitive oat species,Avena longiglumis Durieu (Gramineae)
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Nucleotide sequence of the internal transcribed spacer region of rDNA in barley,Hordeum vulgare L. (Gramineae)
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The Suitability of Molecular and Morphological Evidence in Reconstructing Plant Phylogeny
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CHLOROPLAST DNA INTROGRESSION IN SOUTHERN CALIFORNIA SUNFLOWERS
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Nucleotide sequence of a 5.8S rDNA gene and of the internal transcribed spacers from Populus deltoides
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Gene Trees and Species Trees: Molecular Systematics as One-Character Taxonomy
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CONFIDENCE LIMITS ON PHYLOGENIES: AN APPROACH USING THE BOOTSTRAP
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POLLEN MORPHOLOGY AND DETAILED STRUCTURE OF FAMILY COMPOSITAE, TRIBE CICHORIEAE. II. SUBTRIBE MICROSERIDINAE
resolves10.1073/pnas.85.20.7652
Generation of single-stranded DNA by the polymerase chain reaction and its application to direct sequencing of the HLA-DQA locus.
resolves10.1016/S0031-9422(00)86695-9
Variations in pigment patterns in Pyrrhopappus and related taxa of the Cichorieae
resolves10.1016/0025-5564(82)90027-X
Branch and bound algorithms to determine minimal evolutionary trees
resolves10.1093/oso/9780195066982.003.0013
Discriminating Between Phylogenetic Signal and Random Noise in DNA Sequences
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Evidence for Biased Gene Conversion in Concerted Evolution of Ribosomal DNA
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SYSTEMATIC IMPLICATIONS OF CHLOROPLAST DNA VARIATION IN THE SUBTRIBE MICROSERIDINAE (ASTERACEAE: LACTUCEAE)
resolves10.2307/2399282
Modes and Tempos in the Evolution of Nuclear Ribosomal DNA: New Characters for Evolutionary Studies and New Markers for Genetic and Population Studies
resolves10.1007/BF00303512
Structure of melon rDNA and nucleotide sequence of the 17?25S spacer region
resolves10.1007/BF00937826
Phylogenetic and evolutionary implications of nuclear ribosomal DNA variation in dwarf dandelions (Krigia, Lactuceae, Asteraceae)
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Phylogenetic and Evolutionary Implications of Interspecific Chloroplast DNA Variation in Krigia (Asteraceae-Lactuceae)
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EVOLUTIONARY IMPLICATIONS OF INTRASPECIFIC CHLOROPLAST DNA VARIATION IN DWARF DANDELIONS (KRIGIA; ASTERACEAE)
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A simple method for estimating evolutionary rates of base substitutions through comparative studies of nucleotide sequences
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Estimation of evolutionary distances between homologous nucleotide sequences.
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A Concern for Evidence and a Phylogenetic Hypothesis of Relationships Among Epicrates (Boidae, Serpentes)
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EVOLVING RIBOSOME STRUCTURE: DOMAINS IN ARCHAEBACTERIA, EUBACTERIA, EOCYTES AND EUKARYOTES
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HYBRIDS AND PHYLOGENETIC SYSTEMATICS II. THE IMPACT OF HYBRIDS ON CLADISTIC ANALYSIS
resolves10.1007/BF00351728
Ribosomal DNA internal transcribed spacers are highly divergent in the phytopathogenic ascomycete Fusarium sambucinum (Gibberella pulicaris)
resolves10.1101/SQB.1987.052.01.090
Earliest Phylogenetic Branchings: Comparing rRNA-based Evolutionary Trees Inferred with Various Techniques
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Ribosomal RNA genes in plants: variability in copy number and in the intergenic spacer
resolves10.1073/pnas.81.24.8014
Ribosomal DNA spacer-length polymorphisms in barley: mendelian inheritance, chromosomal location, and population dynamics.
resolves10.1093/nar/17.7.2852
Nucleotidc sequence of the 18S–25S spacer region from rDNA of mung bean
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When Molecules and Morphology Clash: A Phylogenetic Analysis of the North American Ambystomatid Salamanders (Caudata: Ambystomatidae)
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When are Phylogeny Estimates From Molecular and Morphological Data Incongruent?
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Ribosomal DNA variation within and among individuals ofLisianthius (Gentianaceae) populations
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AN OVERVIEW OF THE GENUS PYRRHOPAPPUS (ASTERACEAE: LACTUCEAE) WITH EMPHASIS ON CHLOROPLAST DNA RESTRICTION SITE DATA
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The nucleotide sequence of the rDNA intergenic spacer region in a wild species of the genusVicia, V. angustifolia
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A conserved core structure in the 18?25S rRNA intergenic region from tobacco, Nicotiana rustica
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AMPLIFICATION AND DIRECT SEQUENCING OF FUNGAL RIBOSOMAL RNA GENES FOR PHYLOGENETICS
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An lmproved method for directly sequencing PCR-amplified material using dimethyl sulphoxide
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Length heterogeneity of the large spacer of Vicia faba rDNA is due to the differing number of a 325 bp repetitive sequence elements
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The nucleotide sequence of the rDNA spacer region between the 25S and 18S rRNA genes in a species of the genus Vicia, V. hirsuta
resolves10.1007/BF02103617
Nucleotide sequences of the 5.8S rRNA gene and internal transcribed spacer regions in carrot and broad bean ribosomal DNA
The 17 references without a DOI — listed, not checked
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no DOI — not checked?, 1987: A rapid DNA isolation procedure for small quantities of fresh leaf tissue. ? Phytochem. Bull.19: 11?15.
no DOI — not checked?, 1991: PHYLIP (Phylogeny inference package), version 3.4. Computer program distributed by the author. ? St Louis: The University of Washington.
no DOI — not checkedGonzalez, I. L., Sylvester, J. E., Smith, T. F., Stambolian, D., Schmickel, R. D., 1990: Ribosomal RNA gene sequences and hominoid phylogeny. ? Mol. Biol. Evol.7: 203?219.
no DOI — not checkedGray, A., 1886:Apogon andKrigia. ? In: Synoptical flora of North America, pp. 410?412. ? New York: Ivison, Baikeman, Taylor.
no DOI — not checked?, 1989: Vertebrate phylogeny: evidence from 28 S ribosomal DNA sequences. ? InFernholm, B., Bremer, K., Jornvall, H., (Eds): The hierarchy of life, pp. 355?367. Nobel Symposium70. ? Amsterdam: Elsevier.
no DOI — not checkedLee, S. B., Taylor, J. W., 1992: Phylogeny of five fungus-like protoctistanPhytophthora species, inferred from the internal transcribed spacers of ribosomal DNA. ? Mol. Biol. Evol.9: 636?653.
no DOI — not checkedLevinson, G., Gutman, G. A., 1987: Slipped-strand mispairing: a major mechanism for DNA sequence evolution. ? Mol. Biol. Evol.4: 203?221.
no DOI — not checkedNorthington, D. K., 1974: Systematic studies of the genusPyrrhopappus (Compositae, Cichorieae). ? Spec. Publ. Mus. Texas Tech. Univ.6: 1?38.
no DOI — not checkedRieseberg, L. H., Soltis, D. E., Palmer, J. D., 1988: A molecular re-examination of introgression betweenHelianthus annuus andH. bolanderi (Compositae). ? Evolution42: 227?238.
no DOI — not checkedSaitou, N., Nei, M., 1987: The neighbor-joining method: a new method for reconstructing phylogenetic trees. ? Mol. Biol. Evol.4: 406?425.
no DOI — not checkedShinners, L. H., 1947: Revision of the genusKrigia Schreber. ? Wrightii1: 187?206.
no DOI — not checkedStandley, P. C., 1911: A revision of the cichoriaceous generaKrigia, Cynthia, andCymbia. ? Contr. U. S. Natl. Herb.13: 351?357.
no DOI — not checkedStebbins, G. L., 1953: A new classification of the tribeCichorieae, familyCompositae. ? Madroño12: 33?64.
no DOI — not checked?, 1953: Chromosomes and phylogeny in theCompositae, tribeCichorieae. ? Univ. Calif. Publ. Bot.26: 401?429.
no DOI — not checked?, 1991b: PAUP: phylogenetic analysis using parsimony, version 3.0 r. Computer program distributed by the author. ? Urbana-Champain: Illinois Natural History Survey.
no DOI — not checkedWang, B., Fang, Q., Williams, W. V., Weiner, D. B., 1992: Double-stranded DNA sequencing by linear amplification withTaq DNA polymerase. ? Biotechniques13: 527?530.
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