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Nuclear DNA content of some important plant species

An Erratum to this article was published on 01 November 1991


Nuclear DNA contents of more than 100 important plant species were measured by flow cytometry of isolated nuclei stained with propidium iodide.Arabidopsis exhibits developmentally regulated multiploidy and has a 2C nuclear DNA content of 0.30 pg (145 Mbp/1C), twice the value usually cited. The 2C value for rice is only about three times that ofArabidopsis. Tomato has a 2C value of about 2.0 pg, larger than commonly cited. This survey identified several horticultural crops in a variety of families with genomes only two or three times as large asArabidopsis; these include several fruit trees (a pricot, cherry, mango, orange, papaya, and peach). The small genome sizes of rice and the horticultural plants should facilitate molecular studies of these crops.

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DNA content of the unreplicated haploid chromosome complement


chicken red blood cells


chemical extraction


flow cytometry


Feulgen microdensitometry


reassociation kinetics


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Arumuganathan, K., Earle, E.D. Nuclear DNA content of some important plant species. Plant Mol Biol Rep 9, 208–218 (1991).

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Key words

  • Genome size
  • flow cytometry
  • propidium iodide
  • Arabidopsis
  • rice
  • tomato