{"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\/es\/markets\/world-wheat-crops-threatened-by-stem-rust\/","title":{"rendered":"Cultivos mundiales de trigo amenazados por la roya del tallo"},"content":{"rendered":"<p>Una cepa de la enfermedad de la roya del tallo del trigo (Ug99) se ha extendido desde \u00c1frica al Medio Oriente y podr\u00eda llegar a Asia y al resto del mundo en el futuro, seg\u00fan un art\u00edculo de la <em><a href=\"http:\/\/www.farmandranchguide.com\/\" target=\"_blank\" rel=\"noopener noreferrer\">Gu\u00eda de granjas y ranchos<\/a><\/em>.<\/p>\n<p>Seg\u00fan el art\u00edculo, el Dr. Jim Peterson, criador de trigo en <a href=\"http:\/\/oregonstate.edu\/\" target=\"_blank\" rel=\"noopener noreferrer\">La Universidad Estatal de Oregon<\/a>, EE.UU., y presidente del Comit\u00e9 Nacional de Mejoramiento del Trigo (NWIC), advirti\u00f3 que Ug99 es una raza de roya del tallo que bloquea los tejidos vasculares en los granos de cereales, incluidos el trigo, la avena y la cebada. A diferencia de las royas de las hojas o de las rayas que pueden reducir el rendimiento de los cultivos, las plantas infectadas con Ug99 pueden sufrir p\u00e9rdidas de hasta 100%.<\/p>\n<p>La cepa Ug99 ya apareci\u00f3 en Ir\u00e1n, coloc\u00e1ndola cerca de las principales \u00e1reas de producci\u00f3n de trigo en Asia, como Pakist\u00e1n e India, que representan 20% de la producci\u00f3n mundial anual de trigo. Dadas las condiciones de viento adecuadas, la enfermedad podr\u00eda viajar muy r\u00e1pidamente.<\/p>\n<p>Recientemente, hubo un evento de viento de tres d\u00edas registrado por el CIMMYT (el acr\u00f3nimo en espa\u00f1ol de International Maize and Wheat Improvement Center) que mostr\u00f3 fuertes corrientes de viento que se mov\u00edan desde Yemen, donde est\u00e1 presente Ug99, a trav\u00e9s de Pakist\u00e1n e India, y llegando hasta China. . &quot;Afortunadamente, no hab\u00eda esporas de \u00f3xido en Yemen en ese momento, estaba fuera de ciclo&quot;, dijo Peterson. \u201cPero esto suscita la preocupaci\u00f3n de que si las cosas suceden en la secuencia correcta, esta enfermedad podr\u00eda generalizarse r\u00e1pidamente. Y el CIMMYT estima que de dos tercios a tres cuartos del trigo que se siembra ahora en India y Pakist\u00e1n son altamente susceptibles a esta nueva cepa de roya del tallo \u201d.<\/p>\n<p>Peterson tambi\u00e9n se\u00f1al\u00f3 que 75% a 80% de material de mejoramiento de trigo es susceptible a la enfermedad. \u201cNos estamos quedando sin genes resistentes para desplegar frente a esta enfermedad altamente virulenta\u201d, dijo.<\/p>","protected":false},"excerpt":{"rendered":"<p>Una cepa de la enfermedad de la roya del tallo del trigo (Ug99) se ha propagado desde \u00c1frica hasta Oriente Medio y podr\u00eda llegar a Asia...<\/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":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - 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