Advancing dryland agriculture : plant breeding accomplishments and perspectives

adaptation agricultura agriculture analyse input output aridoculture classification des sols constraints contrainte crop yield cropping systems cultivo de temporal cultivos alimenticios culture pluviale dry farming feed crops fitomejoramiento food crops gossypium hirsutum grain legumes histoire historia history input output analysis leguminosas de grano oilseeds pennisetum typhoides plant breeding plantas forrajeras plante alimentaire precios prices prix recherche rendement des cultures rendimiento de cultivos research semillas oleaginosas sistemas de cultivo soil classification sorghum bicolor variedades de alto rendimiento vertisol vertisoles vertisols