Número cromosómico y apareamiento meiótico en Turbinicarpus valdezianus (Möller) Glass & Foster (Cactaceae) Údair: Reyes-Valdés, M. Humberto, Gómez-Martínez, Martha, García-Osuna, Hermila Trinidad

Meiotic analysis of a cross between cultivated sunflower (Helianthus annuus L. var. macrocarpus) and wild sunflower (Helianthus annuus L. ssp. texanus Heiser) Údair: Rodríguez de la Paz, Jesús, Gómez Martínez, Martha, Reyes Valdés, M. Humberto

Pollen viability in a cultivated sunflower line, in the wild sunflower (Helianthus annuus L. ssp. texanus Heiser) and in its hybrid offspring Údair: Mendoza Villarreal, Rosalinda, Reyes-Valdés, M. Humberto, Espinosa Zapata, Carlos, Villarreal Quintanilla, José Ángel

Obtention of intergeneric hybrids Helianthus annuus x Tithonia rotundifolia and their morphological and molecular analysis Údair: Luévanos-Escareño, Miriam Paulina, Reyes-Valdés, M. Humberto, Villarreal-Quintanilla, José Ángel, Rodríguez-Herrera, Raúl

Embryo rescue of intergeneric hybrids Helianthus annuus x Tithonia rotundifolia Údair: Gómez-Martínez, Martha, Reyes-Valdés, M. Humberto, Martínez-Reyna, Juan Manuel, Escobedo-Bocardo, Leticia, García-Osuna, Hermila T.