Chromosome number and nuclear DNA content of species of the genus Amaranthus (Amaranthaceae)

Authors

  • Carolina Queiroz Samartini Universidade Federal de Lavras (Ufla), Departamento de Agricultura, Campus Universitário, Caixa Postal 3037, CEP 372000‑000 Lavras, MG, Brasil.
  • Luciane Vilela Resende Universidade Federal de Lavras (Ufla), Departamento de Agricultura, Campus Universitário, Caixa Postal 3037, CEP 372000‑000 Lavras, MG, Brasil.
  • Vânia Helena Techio Ufla, Departamento de Biologia, Laboratório de Citogenética, Campus Universitário, Caixa Postal 3037, CEP 372000‑000 Lavras, MG, Brasil.
  • Guilherme Tomaz Braz Universidade Federal de Lavras
  • Luis Felipe Lima e Silva Universidade Federal de Lavras (Ufla), Departamento de Agricultura, Campus Universitário, Caixa Postal 3037, CEP 372000‑000 Lavras, MG, Brasil.
  • Kátia Ferreira Marques de Resende Universidade Federal de Lavras

DOI:

https://doi.org/10.1590/S1678-3921.pab2016.v51.23232

Keywords:

caruru, cytogenetics, dysploidy, genetic variability

Abstract

The objective of this work was to determine the chromosome number and nuclear DNA content of five species of the genus Amaranthus, which commonly occur in Brazil. Metaphase chromosomes were obtained through the flame drying technique and stained with 5% Giemsa, and DNA content was determined by flow cytometry. 2n=32 chromosomes were observed in A. hybridus and 2n=34 in the other studied species, indicating the occurrence of descendant dysploidy. The nuclear DNA content ranged from 1.28 to 1.79 pg, and A. deflexus had the highest value.

Downloads

Published

2016-10-04

How to Cite

Samartini, C. Q., Resende, L. V., Techio, V. H., Braz, G. T., e Silva, L. F. L., & de Resende, K. F. M. (2016). Chromosome number and nuclear DNA content of species of the genus <i>Amaranthus</i> (Amaranthaceae). Pesquisa Agropecuaria Brasileira, 51(8), 998–1001. https://doi.org/10.1590/S1678-3921.pab2016.v51.23232

Issue

v.51, n.8, ago. 2016

Section

SCIENTIFIC NOTES