Articulo
Cryptic homoeology analysis in species and hybrids of genus <i>Zea</i>
Registro en:
issn:0006-3134
issn:1573-8264
Autor
Molina, María del Carmen
López, César Gabriel
Staltari, Sebastián
Chorzempa, Silvia Elena
Moreno Ferrero, V.
Institución
Resumen
Cryptic intergenomic pairing of genus Zea was induced by the use of a diluted colchicine solution in order to elucidate the phylogenetic relations and differentiation of the homoeologous genomes. Results indicate that in species and hybrids with 2n = 20, there was chromosome pairing between the homoeologous A and B genomes with a maximum of 5IV, with the exception of Zea diploperennis and their interspecific hybrids where cryptic homoeologous chromosome pairing was not induced. In almost all 2n = 30 hybrids, observed cryptic pairing increased to a maximum of 10III although Z. mays × Z. mays with 2n = 30 did not show significant differences between treated and untreated materials. Pairing was also observed in species and hybrids with 2n = 40, in which a maximum of 10IV was observed, with the exception of Z. mays with 2n = 40 where treated and untreated cells did not differ significantly. Facultad de Ciencias Agrarias y Forestales