FITOMEJORAMIENTO ARROZ 403 AMELIORATION DES PLANTES 399 PLANT BREEDING 399 RIZ 379 RICE 378 VARIEDADES 116 PRODUCCION VEGETAL 105 VARIETE 105 VARIETIES 105 PLANT PRODUCTION 103 PRODUCTION VEGETALE 103 ORYZA 74 INVESTIGACION 63 RECHERCHE 63 RESEARCH 63 RESISTANCE AUX FACTEURS NUISIBLES 55 RESISTANCE TO INJURIOUS FACTORS 55 RESISTENCIA A AGENTES DANINOS 55 RENDIMIENTO 53 RENDEMENT 52 YIELDS 52 HIBRIDACION 50 BREEDING METHODS 49 METODOS DE MEJORAMIENTO GENETICO 49 METHODE D'AMELIORATION GENETIQUE 48 HYBRIDATION 47 HYBRIDIZATION 47 HIBRIDOS 45 FAO IAEA 44