{"id":158,"date":"2018-12-11T21:20:08","date_gmt":"2018-12-11T21:20:08","guid":{"rendered":"http:\/\/www.rtb.cgiar.org\/rtb-bananaresearchpriorities\/outil-de-renforcement-des-capacites\/2-formulation-doptions-de-recherche\/"},"modified":"2018-12-13T15:49:59","modified_gmt":"2018-12-13T15:49:59","slug":"2-formulation-doptions-de-recherche","status":"publish","type":"page","link":"https:\/\/www.rtb.cgiar.org\/rtb-bananaresearchpriorities\/fr\/outil-de-renforcement-des-capacites\/2-formulation-doptions-de-recherche\/","title":{"rendered":"2. Formulation d’options de recherche"},"content":{"rendered":"

La deuxi\u00e8me \u00e9tape de l’exercice d’\u00e9valuation des priorit\u00e9s a concern\u00e9 la description d’options de recherche et d’une production adaptable. Les groupes de personnes ressources ont d\u00e9crit les options de recherche qui ont \u00e9t\u00e9 s\u00e9lectionn\u00e9es durant l’atelier de Kampala et \u00e9valu\u00e9es par la suite par le mod\u00e8le de surplus \u00e9conomique et l’analyse co\u00fbts-avantages.<\/p>\n

Cliquez sur les liens pour mieux d\u00e9couvrir chaque contrainte, comment la recherche RTB l’aborde, le statut de la recherche, les innovations adaptables, les impacts attendus et les r\u00e9gions et les syst\u00e8mes cibles.<\/p><\/div> <\/div> <\/div><\/div>

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RETABLISSEMENT DE LA PRODUCTION BANANIERE DES PETITES EXPLOITATIONS AFFECTEES PAR LE VIRUS DU BUNCHY TOP DU BANANIER (BBTV)<\/span><\/a><\/div>\n
LUTTE INTEGREE DU FLETRISSEMENT BACTERIEN DU BANANIER PAR XANTHOMONAS (BXW) DANS LES SYSTEMES DE PETITES EXPLOITATIONS<\/span><\/a><\/div>\n
INTENSIFICATION DURABLE DES SYSTEMES DE CULTURE AXES SUR LE BANANIER<\/span><\/a><\/div>\n
SELECTION CONVENTIONNELLE POUR L'AMELIORATION DE LA RESISTANCE AUX MALADIES DU BANANIER<\/span><\/a><\/div>\n
LUTTE DURABLE CONTRE LA FUSARIOSE<\/span><\/a><\/div>\n<\/div><\/div>
RETABLISSEMENT DE LA PRODUCTION BANANIERE DES PETITES EXPLOITATIONS AFFECTEES PAR LE VIRUS DU BUNCHY TOP DU BANANIER (BBTV)<\/h5>
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Constraint<\/b><\/td>\nBanana bunchy top disease (BBTD) is one of the most devastating diseases of banana and plantain particularly for smallholders (Dale 1987). BBTD, caused by the banana bunchy top virus (BBTV), produces erect, narrow, short brittle leaves with yellow borders and typical dark green streaks on leaves and pseudostems and stunted suckers. It results in very small or no bunches (i.e., complete yield loss). Infected mats eventually die, but often remain as a source of inoculum. The disease spreads through infected suckers and via the banana aphid (vector). BBTD is widespread in Asia. The first cases of BBTD in sub-Saharan Africa (SSA) were reported in 1958, with an increase in the rate of spread in the last decades. The disease is now found from southern Malawi and Burundi\/Rwanda\/eastern Democratic Republic of the Congo (DRC) all the way to Nigeria, Central African Republic (CAR), and Benin (Kumar et al. 2011). While laboratory techniques for virus detection and development of BBTV-free planting materials are well established, neither of these services nor commercial sources of BBTV-free planting material are available in rural areas of Asia and Africa.<\/td>\n<\/tr>\n
(Potential) RTB research<\/b><\/td>\nGeneration of alternative practices, models, decision tools, and technologies for use in different land-use systems:<\/p>\n

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  • Clean seed supply through tissue culture and\/or macro-propagation<\/li>\n
  • Community strategies for a banana-free period to eliminate banana aphids on-site and a buffer area free of bananas to reduce aphid re-invasion into a newly-planted field<\/li>\n
  • Approaches for eliminating or reducing re-infection of virus-free banana gardens.<\/li>\n<\/ul>\n

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Status of research<\/b><\/td>\nThe research will build on extensive knowledge and field experience generated in Asia and the incipient experience in SSA. The focus of new research will be to build a more robust understanding of BBTV, its vector, and the interaction both with host diversity and with farmer practice and the surrounding agricultural system. Pilot sites will also be set up to generate tools for building community capacity to recover from BBTD destruction and to mobilize containment when BBTD is first identified. This represents a major research initiative, since most BBTD recovery to date has focused on commercial monocrop plantations. The estimated completion time for the research is nine years with a research success rate of 90%.<\/td>\n<\/tr>\n
Adoptable innovations<\/b><\/td>\n <\/p>\n
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  • Diagnostic tools<\/li>\n
  • Strategies for supplying clean planting materials<\/li>\n
  • Integrated approaches to the recovery of BBTD-affected areas involving the creation of a banana-free period and adequate buffer, replanting strategies, and the management of reinfection<\/li>\n<\/ul>\n

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Expected impact<\/b><\/td>\n\n
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  • Increase\/recovery of crop yield<\/li>\n
  • Increase in production costs (seed, labor for harvest)<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n
Target region\/system<\/b><\/td>\nFocus is on AAA-Cavendish and other AAAs in Asia (Philippines, Taiwan, Vietnam, Sri Lanka) and on diverse smallholder perennial systems of AAA EAHB and plantain (AAB) in West and Central Africa (DRC, Republic of Congo-Brazzaville, Equatorial Guinea, Cameroon, CAR, Gabon, Benin, Nigeria); East Africa (Burundi, Rwanda); and Southern Africa (Malawi, Angola), although other minor cultivar groups in the same areas would also be affected<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div> <\/div> <\/div><\/div><\/div>
LUTTE INTEGREE DU FLETRISSEMENT BACTERIEN DU BANANIER PAR XANTHOMONAS (BXW) DANS LES SYSTEMES DE PETITES EXPLOITATIONS<\/h5>
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