1. Plant Genetic Resources Program, Colegio de Postgraduados Campus Montecillo, Texcoco Edo, México
2. Biotechnology department, INIFAP Tabasco, Campo Experimental Huimanguillo, Humanguillo, Tabasco, México
3. Use of Biocultural Resources, Universidad Veracruzana, Ex Hacienda Lucas Martín, Xalapa de Enríquez, México