Plant Biol (Stuttg) 2004; 6(5): 555-561
DOI: 10.1055/s-2004-821235
Original Paper

Georg Thieme Verlag Stuttgart KG · New York

Nuclear DNA Amounts in 112 Species of Tropical Hardwoods - New Estimates

D. Ohri1 , A. Bhargava1 , A. Chatterjee1
  • 1National Botanical Research Institute, Lucknow-226001, U.P., India
Further Information

Publication History

Publication Date:
03 September 2004 (online)


The 4C DNA values of 112 species, belonging to 37 families have a range from 0.83 pg (Bixa orellana) to 15.54 pg (Thryallis angustifolia), showing a 18.72-fold variation. The genome size varies from 0.21 pg (Bixa orellana) to 3.32 (Thespesia populnea), with a 15.8-fold difference. The Bombacaceae has the minimum range (1.08-fold) of variation, while the maximum (5.0-fold) is shown by the Fabaceae. The Boraginaceae, Lauraceae, Malpighiaceae, and Malvaceae generally have higher 4C DNA values of > 10 pg, while the Bixaceae, Caricaceae, Oxalidaceae, and Santalaceae have lower values of < 2.0 pg. These data add further to our knowledge on variation in DNA amount in tropical hardwoods.


D. Ohri

Division of Genetics and Plant Breeding
National Botanical Research Institute

Rana Pratap Marg

Lucknow-226001, U.P.



Section Editor: F. Salamini