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Genome size variation in Begonia

(2009) GENOME. 52(10). p.829-838
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Abstract
The genome sizes of a Begonia collection comprising 37 species and 23 hybrids of African, Asiatic, Middle American, and South American origin were screened using flow cytometry. Within the collection, 1C values varied between 0.23 and 1.46 pg DNA. Genome sizes were, in most cases, not positively correlated with chromosome number, but with pollen size. A 12-fold difference in mean chromosome size was found between the genotypes with the largest and smallest chromosomes. In general, chromosomes from South American genotypes were smaller than chromosomes of African, Asian, or Middle American genotypes, except for B. boliviensis and B. pearcei. Cytological chromosome studies in different genotypes showed variable chromosome numbers, length, width, and total chromosome volume, which confirmed the diversity in genome size. Large secondary constrictions were present in several investigated genotypes. These data show that chromosome number and structure exhibit a great deal of variation within the genus Begonia, and likely help to explain the large number of taxa found within the genus.
Keywords
flow cytometry, Begonia, genome size, secondary constrictions, total chromosome volume, CHROMOSOME-NUMBER, FLOW-CYTOMETRY, DNA-CONTENT, EVOLUTION, MECHANISMS, PHYLOGENY, KARYOTYPE, ORCHIDS, PLANTS

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Citation

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MLA
Dewitte, Angelo, et al. “Genome Size Variation in Begonia.” GENOME, vol. 52, no. 10, 2009, pp. 829–38, doi:10.1139/G09-056.
APA
Dewitte, A., Leus, L., Eeckhaut, T., Vanstechelman, I., Van Huylenbroeck, J., & Van Bockstaele, E. (2009). Genome size variation in Begonia. GENOME, 52(10), 829–838. https://doi.org/10.1139/G09-056
Chicago author-date
Dewitte, Angelo, Leen Leus, Tom Eeckhaut, Ives Vanstechelman, Johan Van Huylenbroeck, and Erik Van Bockstaele. 2009. “Genome Size Variation in Begonia.” GENOME 52 (10): 829–38. https://doi.org/10.1139/G09-056.
Chicago author-date (all authors)
Dewitte, Angelo, Leen Leus, Tom Eeckhaut, Ives Vanstechelman, Johan Van Huylenbroeck, and Erik Van Bockstaele. 2009. “Genome Size Variation in Begonia.” GENOME 52 (10): 829–838. doi:10.1139/G09-056.
Vancouver
1.
Dewitte A, Leus L, Eeckhaut T, Vanstechelman I, Van Huylenbroeck J, Van Bockstaele E. Genome size variation in Begonia. GENOME. 2009;52(10):829–38.
IEEE
[1]
A. Dewitte, L. Leus, T. Eeckhaut, I. Vanstechelman, J. Van Huylenbroeck, and E. Van Bockstaele, “Genome size variation in Begonia,” GENOME, vol. 52, no. 10, pp. 829–838, 2009.
@article{941300,
  abstract     = {{The genome sizes of a Begonia collection comprising 37 species and 23 hybrids of African, Asiatic, Middle American, and South American origin were screened using flow cytometry. Within the collection, 1C values varied between 0.23 and 1.46 pg DNA. Genome sizes were, in most cases, not positively correlated with chromosome number, but with pollen size. A 12-fold difference in mean chromosome size was found between the genotypes with the largest and smallest chromosomes. In general, chromosomes from South American genotypes were smaller than chromosomes of African, Asian, or Middle American genotypes, except for B. boliviensis and B. pearcei. Cytological chromosome studies in different genotypes showed variable chromosome numbers, length, width, and total chromosome volume, which confirmed the diversity in genome size. Large secondary constrictions were present in several investigated genotypes. These data show that chromosome number and structure exhibit a great deal of variation within the genus Begonia, and likely help to explain the large number of taxa found within the genus.}},
  author       = {{Dewitte, Angelo and Leus, Leen and Eeckhaut, Tom and Vanstechelman, Ives and Van Huylenbroeck, Johan and Van Bockstaele, Erik}},
  issn         = {{0831-2796}},
  journal      = {{GENOME}},
  keywords     = {{flow cytometry,Begonia,genome size,secondary constrictions,total chromosome volume,CHROMOSOME-NUMBER,FLOW-CYTOMETRY,DNA-CONTENT,EVOLUTION,MECHANISMS,PHYLOGENY,KARYOTYPE,ORCHIDS,PLANTS}},
  language     = {{eng}},
  number       = {{10}},
  pages        = {{829--838}},
  title        = {{Genome size variation in Begonia}},
  url          = {{http://dx.doi.org/10.1139/G09-056}},
  volume       = {{52}},
  year         = {{2009}},
}

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