{"id":15285,"date":"2026-06-20T12:42:00","date_gmt":"2026-06-20T12:42:00","guid":{"rendered":"https:\/\/dev.iita.org\/news-item\/recent-advances-in-breeding-for-striga-resistance-in-early-and-extra-early-maturing-maize-for-sub-saharan-africa\/"},"modified":"2026-06-29T20:40:05","modified_gmt":"2026-06-29T20:40:05","slug":"recent-advances-in-breeding-for-striga-resistance-in-early-and-extra-early-maturing-maize-for-sub-saharan-africa","status":"publish","type":"news-item","link":"https:\/\/iita.org\/fr\/news-item\/recent-advances-in-breeding-for-striga-resistance-in-early-and-extra-early-maturing-maize-for-sub-saharan-africa\/","title":{"rendered":"Recent advances in breeding for Striga resistance in early and extra-early maturing maize for sub-Saharan Africa"},"content":{"rendered":"<span data-contrast=\"auto\">A team of\u00a0<\/span><a href=\"https:\/\/iita.org\/fr\/\"><span data-contrast=\"none\">IITA<\/span><\/a><span data-contrast=\"auto\">\u00a0scientists, molecular breeders, and geneticists, coordinated by the IITA early and extra-early Maize Program Lead,\u00a0<\/span><a href=\"https:\/\/iita.org\/fr\/iita-staff\/badu-apraku-baffour\/\"><span data-contrast=\"none\">Baffour<\/span><span data-contrast=\"none\">\u00a0Badu-<\/span><span data-contrast=\"none\">Apraku<\/span><\/a><span data-contrast=\"auto\">, recently made\u00a0<\/span><span data-contrast=\"auto\">significant<\/span><span data-contrast=\"auto\">\u00a0advances in the longstanding efforts of the IITA Maize Improvement Program\u00a0<\/span><span data-contrast=\"auto\">(MIP)\u00a0<\/span><span data-contrast=\"auto\">to develop genotypes with durable resistance to\u00a0<\/span><i><span data-contrast=\"auto\">Striga<\/span><\/i><span data-contrast=\"auto\">\u00a0parasitism\u00a0<\/span><span data-contrast=\"auto\">using<\/span><span data-contrast=\"auto\">\u00a0molecular markers. The major advances are:<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span>\n<ul>\n \t<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"2\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">I<\/span><span data-contrast=\"auto\">dentification of genomic regions significantly associated with indicator traits for\u00a0<\/span><i><span data-contrast=\"auto\">Striga<\/span><\/i><span data-contrast=\"auto\">\u00a0resistance under infestation in early maturing tropical maize inbred lines in a genome-wide association study (GWAS)<\/span><span data-ccp-props=\"{&quot;134233279&quot;:true,&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<\/ul>\n<ul>\n \t<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"2\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">I<\/span><span data-contrast=\"auto\">dentification of\u00a0<\/span><span data-contrast=\"auto\">quantitative trait locus<\/span><span data-contrast=\"auto\">\u00a0<\/span><span data-contrast=\"auto\">(<\/span><span data-contrast=\"auto\">QTL<\/span><span data-contrast=\"auto\">)<\/span><span data-contrast=\"auto\">\u00a0controlling resistance to\u00a0<\/span><i><span data-contrast=\"auto\">Striga<\/span><\/i><span data-contrast=\"auto\">\u00a0in two extra-early maturing maize mapping populations\u00a0<\/span><span data-ccp-props=\"{&quot;134233279&quot;:true,&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n \t<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"2\" data-aria-posinset=\"2\" data-aria-level=\"1\"><span data-contrast=\"auto\">I<\/span><span data-contrast=\"auto\">dentification of QTL controlling resistance to\u00a0<\/span><i><span data-contrast=\"auto\">Striga<\/span><\/i><span data-contrast=\"auto\">\u00a0in an early maturing mapping population containing genes derived from a cross between normal endosperm maize and wild maize (<\/span><i><span data-contrast=\"auto\">Zea<\/span><\/i><i><span data-contrast=\"auto\">\u00a0<\/span><\/i><i><span data-contrast=\"auto\">diploperennis<\/span><\/i><span data-contrast=\"auto\">)<\/span><span data-ccp-props=\"{&quot;134233279&quot;:true,&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span>\n\n<figure id=\"attachment_27732\" aria-describedby=\"caption-attachment-27732\" style=\"width: 490px\" class=\"wp-caption aligncenter\"><img fetchpriority=\"high\" decoding=\"async\" class=\"wp-image-27732\" src=\"https:\/\/iita.org\/wp-content\/uploads\/2026\/06\/Recent-advances-p01-300x150-1.jpg\" alt=\"Striga resistant\/susceptible mapping population families under artificial Striga infestation in Abuja, Nigeria.\" width=\"490\" height=\"245\" \/><figcaption id=\"caption-attachment-27732\" class=\"wp-caption-text\">Striga resistant\/susceptible mapping population families under artificial Striga infestation in Abuja, Nigeria.<\/figcaption><\/figure>\n\n<span data-contrast=\"auto\">Parasitism by\u00a0<\/span><i><span data-contrast=\"auto\">Striga<\/span><\/i><i><span data-contrast=\"auto\">\u00a0<\/span><\/i><i><span data-contrast=\"auto\">hermonthica<\/span><\/i><i><span data-contrast=\"auto\">\u202f<\/span><\/i><span data-contrast=\"auto\">in sub-Saharan Africa (SSA) is a major cause of dramatic maize yield losses and threatens\u00a0<\/span><span data-contrast=\"auto\">over 300 million people\u2019s livelihoods<\/span><span data-contrast=\"auto\">. Farmers in the sub-region often experience complete crop failure under severe\u202finfestation and\u00a0<\/span><span data-contrast=\"auto\">have been forced<\/span><span data-contrast=\"auto\">\u00a0to abandon their farmlands.\u00a0<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span>\n\n<span data-contrast=\"auto\">About two decades ago, IITA initiated a project, funded by the Rockefeller Foundation to develop high<\/span><span data-contrast=\"auto\">\u2013<\/span><span data-contrast=\"auto\">yielding and<\/span><i><span data-contrast=\"auto\">\u00a0<\/span><\/i><i><span data-contrast=\"auto\">Striga<\/span><\/i><i><span data-contrast=\"auto\">\u2013<\/span><\/i><span data-contrast=\"auto\">resistant inbred lines and hybrids as well as identify QTL for marker<\/span><span data-contrast=\"auto\">\u2013<\/span><span data-contrast=\"auto\">assisted selection (MAS) to facilitate and speed up the transfer of resistance genes into susceptible genotypes. Through this project,\u00a0<\/span><span data-contrast=\"auto\">IITA scientists have made\u00a0<\/span><span data-contrast=\"auto\">considerable advances in developing several maize genotypes with durable\u00a0<\/span><i><span data-contrast=\"auto\">Striga<\/span><\/i><span data-contrast=\"auto\">\u00a0resistance genes using conventional breeding approaches.\u00a0<\/span><span data-contrast=\"auto\">They<\/span><span data-contrast=\"auto\">\u00a0<\/span><span data-contrast=\"auto\">have developed\u00a0<\/span><span data-contrast=\"auto\">s<\/span><span data-contrast=\"auto\">everal populations, varieties, inbred lines, and hybrids with durable resistance and distributed\u00a0<\/span><span data-contrast=\"auto\">these\u00a0<\/span><span data-contrast=\"auto\">to the national maize programs in SSA<\/span><span data-contrast=\"auto\">. However, progress in developing molecular markers for use in MAS has been very slow.\u00a0<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span>\n\n<span data-contrast=\"auto\"><img decoding=\"async\" class=\"wp-image-27733 aligncenter\" src=\"https:\/\/iita.org\/wp-content\/uploads\/2026\/06\/Recent-advances-layout-300x150.jpg\" alt=\"\" width=\"458\" height=\"229\" \/><\/span><span data-contrast=\"auto\">Nevertheless,\u00a0<\/span><span data-contrast=\"auto\">in 2017, with<\/span><span data-contrast=\"auto\">\u00a0funding support\u00a0<\/span><span data-contrast=\"auto\">from<\/span><span data-contrast=\"auto\">\u00a0<\/span><span data-contrast=\"auto\">the Bill\u00a0<\/span><span data-contrast=\"auto\">&amp;<\/span><span data-contrast=\"auto\">\u00a0Melinda Gates\u00a0<\/span><span data-contrast=\"auto\">F<\/span><span data-contrast=\"auto\">oundation , the IITA-MIP has made remarkable progress\u00a0<\/span><span data-contrast=\"auto\">under the DTMA\/STMA Project\u00a0<\/span><span data-contrast=\"auto\">through gene stacking in efforts to develop early and extra-early inbred lines using novel resistance genes from the wild maize that support little or no emergence of\u00a0<\/span><i><span data-contrast=\"auto\">S.\u00a0<\/span><\/i><i><span data-contrast=\"auto\">hermonthica<\/span><\/i><span data-contrast=\"auto\">\u00a0into susceptible but outstanding genotypes. The\u00a0<\/span><span data-contrast=\"auto\">scientists<\/span><span data-contrast=\"auto\">\u2019<\/span><span data-contrast=\"auto\">\u00a0<\/span><span data-contrast=\"auto\">breeding efforts have resulted in\u00a0<\/span><span data-contrast=\"auto\">developing<\/span><span data-contrast=\"auto\">\u00a0several multiple stress<\/span><span data-contrast=\"auto\">\u2013<\/span><span data-contrast=\"auto\">resistant early and extra-early inbred lines and hybrids with combined resistance\/tolerance to<\/span><i><span data-contrast=\"auto\">\u00a0<\/span><\/i><i><span data-contrast=\"auto\">Striga<\/span><\/i><span data-contrast=\"auto\">, drought, and low soil nitrogen<\/span><span data-contrast=\"auto\">.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>A team of IITA scientists, molecular breeders, and geneticists, coordinated by the IITA early and extra-early Maize Program Lead, Baffour Badu-Apraku, recently made significant advances in the longstanding efforts of the IITA Maize Improvement Program (MIP) to develop genotypes with durable resistance to Striga parasitism using molecular markers<\/p>","protected":false},"featured_media":15286,"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":[1256],"science-area":[],"program":[],"location":[32],"news-type":[],"hub":[61],"crop":[68],"impact-areas":[],"item-year":[198],"class_list":["post-15285","news-item","type-news-item","status-publish","has-post-thumbnail","hentry","tag-dtmahybridsiita-news-no-2562inbredsmaizemasmolecular-markersnigeriastmastress-tolerancestrigasub-saharan-africa","location-nigeria","hub-western-africa","crop-maize","item-year-198"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - 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