AMELIORATION DES PLANTES 51 FITOMEJORAMIENTO PLANT BREEDING 51 RENDEMENT RENDIMIENTO 51 YIELDS 51 ARROZ 50 RICE 50 RIZ 50 VARIEDADES 32 VARIETE 32 VARIETIES 32 PLANT PRODUCTION 13 PRODUCCION VEGETAL 13 PRODUCTION VEGETALE 13 RESISTANCE AUX FACTEURS NUISIBLES 12 RESISTANCE TO INJURIOUS FACTORS 12 RESISTENCIA A AGENTES DANINOS 12 FAO IAEA 10 HIBRIDACION 10 HYBRIDATION 10 HYBRIDIZATION 10 INDUCED MUTATION 9 MUTACION INDUCIDA 9 MUTATION PROVOQUEE 9 BREEDING METHODS 8 CULTURAL METHODS 8 IRRADIACION 8 IRRADIATION 8 METHODE D'AMELIORATION GENETIQUE 7