Abstract
The 2C amounts of DNA for 12 taxa of the section Arachis nom. nud. of the genus Arachis L. were determined using cytophotometric techniques. The diploid taxa ranged from 4.92 to 5.98 pg of DNA per cell. The species of the diploid series Annuae Krap. & Greg. nom. nud. averaged ca. 1 pg less DNA per cell than the taxa of the diploid series Perennes Krap. & Greg. nom. nud. No significant differences were found between taxa within these two series. The tetraploid taxa ranged from 10.36 to 11.35 pg of DNA per cell. Within the tetraploid series Amphiploides Krap. & Greg. nom. nud. differences were found between A. monticola Krap. & Rig. and A. hypogaea L. The two subspecies of A. hypogaea, ssp. hypogaea and ssp. fastigiata Waldron, were found to differ significantly in their 2C amounts of DNA. The implications of the cytophotometric data on the chromosomal evolution of this section are discussed.
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