Zea perennis Zea mays 6 maize 6 meiosis 6 nonhuman 6 Chromosomes, Plant 4 DNA, Plant 4 Genome, Plant 4 In Situ Hybridization, Fluorescence 4 Meiosis 4 Zea 4 Zea luxurians 4 fluorescence in situ hybridization 4 genomic in situ hybridization 4 molecular evolution 4 plant DNA 4 plant genome 4 priority journal 4 4',6 diamidino 2 phenylindole 2 Amphiploidy 2 Article 2 Colchicine 2 Crosses, Genetic 2 Cytogenetics 2 Diploidy 2 Evolution 2 GISH-FISH 2 Genes, Regulator 2 Heterochromatic knobs 2 Hybrids 2