Nuclear DNA amounts in 112 species of tropical hardwoods -- new estimates.
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.
Ohri
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Division of Genetics and Plant Breeding, National Botanical Research Institute, Rana Pratap Marg, Lucknow-226001, U.P., India. ohri_deepak@rediffmail.com
Bhargava
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Chatterjee
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D002467:Cell Nucleus / Q000737:chemistry; D018744:DNA, Plant / Q000032:analysis* / Q000235:genetics*; D018745:Genome, Plant; D007194:India; D019684:Magnoliopsida / Q000145:classification / Q000235:genetics; D011003:Ploidies; D013045:Species Specificity; D014197:Trees / Q000145:classification / Q000235:genetics*
D018744:DNA, Plant