{"id":13582,"date":"2008-05-13T00:00:00","date_gmt":"2008-05-13T04:00:00","guid":{"rendered":"http:\/\/www.farmchemicalsinternational.com\/2008\/05\/13\/world-wheat-crops-threatened-by-stem-rust\/"},"modified":"2019-09-16T13:53:38","modified_gmt":"2019-09-16T17:53:38","slug":"world-wheat-crops-threatened-by-stem-rust","status":"publish","type":"post","link":"https:\/\/www.agribusinessglobal.com\/pt\/markets\/world-wheat-crops-threatened-by-stem-rust\/","title":{"rendered":"Culturas mundiais de trigo amea\u00e7adas pela ferrugem do colmo"},"content":{"rendered":"

Uma cepa da ferrugem do caule do trigo (Ug99) se espalhou da \u00c1frica para o Oriente M\u00e9dio e poder\u00e1 atingir a \u00c1sia e o resto do mundo no futuro, de acordo com um artigo do... Guia de Fazendas e Ranchos<\/a><\/em>.<\/p>\n

Segundo o artigo, o Dr. Jim Peterson, um melhorista de trigo em Universidade Estadual do Oregon<\/a>, dos EUA, e presidente do Comit\u00ea Nacional de Melhoramento do Trigo (NWIC), alertou que a Ug99 \u00e9 uma ra\u00e7a de ferrugem do caule que bloqueia os tecidos vasculares em gr\u00e3os de cereais, incluindo trigo, aveia e cevada. Ao contr\u00e1rio das ferrugens da folha ou da estria, que podem reduzir a produtividade das culturas, as plantas infectadas com Ug99 podem sofrer perdas de at\u00e9 100%.<\/p>\n

A cepa Ug99 j\u00e1 apareceu no Ir\u00e3, plantando-a perto das principais \u00e1reas de produ\u00e7\u00e3o de trigo na \u00c1sia, como Paquist\u00e3o e \u00cdndia, que respondem por 201.000 toneladas da produ\u00e7\u00e3o mundial anual de trigo. Com as condi\u00e7\u00f5es de vento favor\u00e1veis, a doen\u00e7a pode se espalhar muito rapidamente.<\/p>\n

Recentemente, o CIMMYT (Centro Internacional de Melhoramento de Milho e Trigo) registrou um evento de ventos fortes com dura\u00e7\u00e3o de tr\u00eas dias, que mostrou correntes de vento vindas do I\u00eamen, onde a cepa Ug99 est\u00e1 presente, atravessando o Paquist\u00e3o e a \u00cdndia, e chegando at\u00e9 a China. "Felizmente, n\u00e3o havia esporos de ferrugem no I\u00eamen naquele momento \u2013 estava fora do ciclo", disse Peterson. "Mas isso levanta a preocupa\u00e7\u00e3o de que, se as coisas acontecerem na sequ\u00eancia correta, a dissemina\u00e7\u00e3o dessa doen\u00e7a possa ocorrer rapidamente. E o CIMMYT estima que de dois ter\u00e7os a tr\u00eas quartos do trigo plantado atualmente na \u00cdndia e no Paquist\u00e3o sejam altamente suscet\u00edveis a essa nova cepa de ferrugem do caule."\u201c<\/p>\n

Peterson tamb\u00e9m observou que as linhagens 75% a 80% do material gen\u00e9tico do trigo s\u00e3o suscet\u00edveis \u00e0 doen\u00e7a. "Estamos ficando sem genes resistentes para usar contra essa doen\u00e7a altamente virulenta", disse ele.<\/p>","protected":false},"excerpt":{"rendered":"

Uma cepa da doen\u00e7a da ferrugem do caule do trigo (Ug99) se espalhou da \u00c1frica para o Oriente M\u00e9dio e pode chegar \u00e0 \u00c1sia\u2026<\/p>","protected":false},"author":110,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[5],"tags":[],"class_list":["post-13582","post","type-post","status-publish","format-standard","hentry","category-markets"],"yoast_head":"\nWorld Wheat Crops Threatened By Stem Rust - AgriBusiness Global<\/title>\n<meta name=\"description\" content=\"A strain of wheat stem rust disease (Ug99) has spread from Africa to the Middle East, and could reach Asia and the rest of the world in the future,\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.agribusinessglobal.com\/pt\/markets\/world-wheat-crops-threatened-by-stem-rust\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"World Wheat Crops Threatened By Stem Rust - 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