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L'amélioration des plantes est un art qui, grâce aux résultats de la recherche fondamentale et aux progrès réalisés dans le domaine des biotechnologies, exploite un grand nombre d'outils en perpétuelle évolution. Cet art n'en reste pas moins soumis à des principes immuables : les lois de la génétique. Sur le terrain, l'amélioration aboutit à l'application de schémas de sélection, de multiplication et de diffusion qui font et feront toujours leurs preuves quand il s'agit d'adapter la matière vivante aux besoins de l'humanité. Les auteurs décrivent et analysent ces principes qui percent les secrets de l'hérédité et font ensuite découvrir aux lecteurs leurs applications dans l'art de créer puis de diffuser des cultivars nouveaux, des variétés, sinon des espèces nouvelles. Dans ce but, ils passent en revue des cas d'espèce des plantes cultivées en régions tropicales ; ceux-ci, plus signifiants, sont élevés en cas de figure. Soucieux d'intégrer l'amélioration des plantes à l'interdisciplinarité et au réalisme des sciences agronomiques, les auteurs ont voulu, avec les Presses agronomiques de Gembloux, inaugurer un mode de diffusion "pluriel" : l'édition traditionnelle associée à l'édition électronique. Certains chapitres peuvent être consultés sur un site imagier dynamique, http://www.genagro.org, où leur présentation permet une interactivité entre textes, images et schémas ainsi qu'avec d'autres disciplines comme la phytologie, la phytotechnie, l'étude de la reproduction végétale, la phytopathologie.

Plantes --- Amelioration --- Plante de culture --- Crops --- Zone tropicale --- Tropical zones --- Amélioration des plantes --- Plant breeding --- Génétique des populations --- population genetics --- Reproduction sexuée --- Sexual reproduction --- Elaeis guineensis --- Cocos nucifera --- Arachis hypogaea --- Glycine max --- Helianthus annuus --- Sesamum indicum --- Oryza sativa --- Zea mays --- Sorghum bicolor --- Pennisetum glaucum --- Éleusine --- Eleusine --- Eragrostis --- Panicum miliaceum --- Setaria italica --- Amaranthus --- Fagopyrum --- Chenopodium --- Manihot esculenta --- Dioscorea --- Ipomoea batatas --- Phaseolus --- Vigna --- Cajanus cajan --- Gossypium --- Coffea --- Theobroma cacao --- Camellia sinensis --- Saccharum officinarum --- Musa --- Hevea brasiliensis --- Chrysanthemum --- Digitaria exilis --- Echinochloa --- Zizania --- Eleusine. --- Plantes - Amelioration - Regions tropicales --- Cinchona ledgeriana

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This report is the second in a series of three evaluating underexploited African plant resources that could help broaden and secure Africa's food supply. The volume describes the characteristics of 18 little-known indigenous African vegetables (including tubers and legumes) that have potential as food- and cash-crops but are typically overlooked by scientists and policymakers and in the world at large. The book assesses the potential of each vegetable to help overcome malnutrition, boost food security, foster rural development, and create sustainable landcare in Africa. Each species is described in a separate chapter, based on information gathered from and verified by a pool of experts throughout the world. Volume I describes African grains and Volume III African fruits.

Ressource génétique --- genetic resources --- Botanique --- Botany --- Aliment pour animaux --- feeds --- Alimentation humaine --- Human feeding --- Valeur nutritive --- Nutritive value --- Pratique culturale --- Cultivation --- Sécurité alimentaire --- food security --- Conservation des ressources --- Resource conservation --- Politique de la recherche --- Research policies --- Amaranthus --- Vigna subterranea --- Adansonia --- Celosia --- Vigna unguiculata --- Solanum aethiopicum --- Citrullus lanatus --- Parkia biglobosa --- Tylosema esculentum --- Moringa oleifera --- Solenostemon --- Plectranthus esculentus --- Sphenostylis --- Vitellaria paradoxa --- Abelmoschus esculentus --- Afrique au sud du Sahara --- Africa South of Sahara --- ETH Ethnobotany & Economic botany --- Africa --- crops --- tropical crops --- human nutrition --- food plants --- vegetables --- Agriculture -- Africa, Sub-Saharan. --- Agriculture -- Africa. --- Food crops -- Africa, Sub-Saharan. --- Food crops -- Africa. --- Grain -- Africa, Sub-Saharan. --- Grain -- Africa. --- Vegetables -- Africa, Sub-Saharan. --- Vegetables -- Africa. --- Cultures vivrières --- Agriculture / General --- Eleusine coracana --- Digitaria --- Pennisetum glaucum --- Sorghum --- Eragrostis --- Brachiaria --- Hordeum vulgare --- Triticum dicoccum --- Avena --- Paspalum scrobiculatum --- Aristida --- Panicum miliaceum --- Cenchrus --- Echinochloa --- Dactyloctenium --- Digitaria exilis --- Eragrostis tef --- Indigenous crops --- Sorghum and Millets --- Aristida pungens --- Avena abyssinica --- Brachiaria deflexa --- Cenchrus biflorus --- Dactyloctenium aegyptium --- Digitaria iburua --- Echinochloa colona --- Echinochloa pyramidalis --- Echinochloa stagnina --- Oryza barthii --- Oryza glaberrima --- Oryza longistaminata --- Oryza punctata --- Panicum anabaptistum --- Panicum laetum --- Panicum stagninum --- Panicum turgidum --- Poaceae --- Sorghum bicolor --- barley --- e-publication --- native flora --- Sorghum and Millets. --- Cereals. --- Land varieties --- Food crops --- Traditional farming --- Plant and Crop Sciences. Crops --- Cereals --- Tropical fruits --- Crops --- Wild plants --- Food resources --- Harvesting --- Picking --- Central Africa --- Grain crops --- Oryza --- Agriculture --- Cultures vivrières --- BUSINESS & ECONOMICS --- Food crops. --- Fruit --- Fruit. --- Indigenous crops. --- Traditional farming. --- Industries --- General. --- Africa. --- Plantenteelt. --- TECHNOLOGY & ENGINEERING --- Vegetables --- Vegetables. --- Agronomy --- Crop Science. --- Skörd. --- Afrika. --- Plant and Crop Sciences. Crops -- Fruit and Nut Crops. --- Plant and Crop Sciences. Crops -- Vegetables. --- Brachiaria reflexa --- Irvingia --- Dika