Fecha de publicación: 05/08/2021 Fuente: WIPO "pollination" The present disclosure relates to plant reproductive barriers such as those conferred by the Teosinte crossing barrier 1-female (Tcb1-female) gene, the Teosinte crossing barrier 1-male (Tcb1-male) gene, the gametophytic factor2 female (GA2-female) gene, and the gametophytic factor2 male (GA2-male) gene. The disclosure provides compositions that contain nucleic acid(s) comprising Tcb1-female, Tcb1-male, GA2-female, and/or GA2-male nucleic acid sequences, such as expression cassettes, vectors, transformed host cells, and genetically engineered plants and uses of these compositions that include for example, controlling plant pollination and overcoming species pollination barriers, conferring cross-incompatibility and self-incompatibility in plants, and isolating a breeding population of plants, such as a genetically modified plant population.