{"id":16703,"date":"2026-06-20T12:52:36","date_gmt":"2026-06-20T12:52:36","guid":{"rendered":"https:\/\/dev.iita.org\/news-item\/using-wild-relatives-in-breeding-cowpea-for-improved-adaptation-to-drought-and-heat\/"},"modified":"2026-06-29T18:55:19","modified_gmt":"2026-06-29T18:55:19","slug":"using-wild-relatives-in-breeding-cowpea-for-improved-adaptation-to-drought-and-heat","status":"publish","type":"news-item","link":"https:\/\/iita.org\/fr\/news-item\/using-wild-relatives-in-breeding-cowpea-for-improved-adaptation-to-drought-and-heat\/","title":{"rendered":"Utilisation d'esp\u00e8ces sauvages dans l'am\u00e9lioration du ni\u00e9b\u00e9 pour une adaptation accrue \u00e0 la s\u00e9cheresse et \u00e0 la chaleur"},"content":{"rendered":"Le ni\u00e9b\u00e9 est une culture de base importante de la r\u00e9gion de la savane en Afrique de l'Ouest, mais les efforts visant \u00e0 accro\u00eetre sa productivit\u00e9 pourraient \u00eatre entrav\u00e9s par le changement climatique, en particulier la r\u00e9duction et l'irr\u00e9gularit\u00e9 des pr\u00e9cipitations ainsi que l'augmentation des temp\u00e9ratures. Les caract\u00e8res importants pour faire face aux changements climatiques pourraient r\u00e9sider non seulement dans le ni\u00e9b\u00e9 cultiv\u00e9, mais aussi dans ses apparent\u00e9s sauvages.\n
\n\n\"Picture<\/a>\n

Chercheur inspectant des plants de ni\u00e9b\u00e9.<\/p>\n\n<\/div>\nPar cons\u00e9quent, des obtenteurs de ni\u00e9b\u00e9 de trois pays d'Afrique de l'Ouest se sont r\u00e9unis pour leur premi\u00e8re r\u00e9union annuelle de projet les 25 et 26 avril \u00e0 la maison d'h\u00f4tes de l'IITA \u00e0 Lagos, afin de discuter des progr\u00e8s r\u00e9alis\u00e9s dans l'identification d'individus d'esp\u00e8ces apparent\u00e9es qui pourraient s'av\u00e9rer utiles pour am\u00e9liorer la tol\u00e9rance du ni\u00e9b\u00e9 \u00e0 la chaleur et \u00e0 la s\u00e9cheresse.\n\nLes r\u00e9sultats de la premi\u00e8re ann\u00e9e de mise en \u0153uvre du projet ont montr\u00e9 qu'une variation importante \u00e9tait pr\u00e9sente dans le mat\u00e9riel g\u00e9n\u00e9tique sauvage, avec un potentiel d'utilisation pour am\u00e9liorer la culture cultiv\u00e9e une fois que des croisements et une s\u00e9lection appropri\u00e9s auront \u00e9t\u00e9 r\u00e9alis\u00e9s.\n\n \n

\n\n\"Picture<\/a>\n

Vari\u00e9t\u00e9 de ni\u00e9b\u00e9 am\u00e9lior\u00e9e.<\/p>\n\n<\/div>\nOusmane Boukar<\/a>, le chef de projet, a fait remarquer que \u201c au cours de la premi\u00e8re ann\u00e9e de cet important projet, l'\u00e9valuation des esp\u00e8ces sauvages apparent\u00e9es au ni\u00e9b\u00e9 sous des temp\u00e9ratures nocturnes \u00e9lev\u00e9es (>20 \u00b0C) et un stress hydrique a r\u00e9v\u00e9l\u00e9 plusieurs accessions pr\u00e9sentant de meilleures performances que les lign\u00e9es cultiv\u00e9es tol\u00e9rantes \u00e0 la s\u00e9cheresse et \u00e0 la chaleur existantes dans ces conditions de stress. Les accessions identifi\u00e9es seront confirm\u00e9es cette deuxi\u00e8me ann\u00e9e et leurs g\u00e8nes souhaitables pour la r\u00e9silience climatique seront introduits dans les lign\u00e9es cultiv\u00e9es \u201d.\n\nMichael Abberton<\/a>, responsable du Centre de ressources g\u00e9n\u00e9tiques de l'IITA, a \u00e9galement soulign\u00e9 que la banque de g\u00e8nes conserve plus de 1 900 esp\u00e8ces sauvages apparent\u00e9es au ni\u00e9b\u00e9, dont environ 400 sont interfertiles avec les lign\u00e9es cultiv\u00e9es.\n\nLe projet est financ\u00e9 par\u00a0Fonds mondial pour la diversit\u00e9 des cultures<\/a>\u00a0et dirig\u00e9 par l'IITA en partenariat avec l'Institut de l'Environnement et de Recherches Agricoles (INERA<\/a>) Burkina Faso, l'Institut National de la Recherche Agronomique du Niger (INRAN) Niger, et le Centre National de Ressources G\u00e9n\u00e9tiques et de Biotechnologie (NACGRAB<\/a>) Nigeria.","protected":false},"excerpt":{"rendered":"

Cowpea is an important staple crop of the savannah region of West Africa but efforts to increase its productivity may be hampered by climate change particularly reduced and erratic rainfall and increased temperatures.<\/p>","protected":false},"featured_media":16704,"template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"tags":[1908],"science-area":[],"program":[],"location":[32],"news-type":[],"hub":[61],"crop":[],"impact-areas":[],"item-year":[195],"class_list":["post-16703","news-item","type-news-item","status-publish","has-post-thumbnail","hentry","tag-cowpeaiita-news-no-2385","location-nigeria","hub-western-africa","item-year-195"],"yoast_head":"\nUsing wild relatives in breeding cowpea for improved adaptation to drought and heat - 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