{"id":60311,"date":"2018-03-09T22:48:07","date_gmt":"2018-03-09T22:48:07","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/respuesta-nutricional-y-fisiologica-de-los-ca%c2%adtricos-al-rayado-y-sus-implicaciones-agronomicas\/"},"modified":"2018-03-09T22:48:07","modified_gmt":"2018-03-09T22:48:07","slug":"respuesta-nutricional-y-fisiologica-de-los-ca%c2%adtricos-al-rayado-y-sus-implicaciones-agronomicas","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/quimica-agricola\/respuesta-nutricional-y-fisiologica-de-los-ca%c2%adtricos-al-rayado-y-sus-implicaciones-agronomicas\/","title":{"rendered":"Respuesta nutricional y fisiol\u00f3gica de los c\u00edtricos al rayado y sus implicaciones agron\u00f3micas"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Carlos Fernando Rivas Grela <\/strong><\/h2>\n<p>En el presente trabajo se estudi\u00f3 el efecto del rayado sobre la productividad y comportamiento fisiol\u00f3gico de diferentes cultivares de c\u00edtricos durante la fase de ca\u00edda fisiol\u00f3gica. El rayado, en cualquiera de las fechas practicadas, demostr\u00f3 disminuir transitoriamente la ca\u00edda de frutitos, aunque la mejora de la productividad se logr\u00f3 aplicando el rayado en el periodo comprendido entre antes de la antesis y la ca\u00edda de p\u00e9talos. Aunque el retraso en la abscisi\u00f3n es general para todos los tipos de brotes, se demostr\u00f3 que el incremento en el cuajado final se atribuye a los brotes reproductivos con hojas. Este efecto se atribuye al incremento de la eficiencia cu\u00e1ntica del fotosistema ii (\u00c2\u00bf psii) que se ve estimulada a partir de los 30 d\u00edas posteriores al tratamiento. Contrariamente a lo que ocurri\u00f3 con los brotes reproductivos con hojas, la \u00c2\u00bf psii de los brotes vegetativos disminuy\u00f3, lo que se explica por la acumulaci\u00f3n de az\u00facares de reserva. Tambi\u00e9n se observ\u00f3 una disminuci\u00f3n del nivel de \u00e1cido absc\u00edsico (aba) en frutitos, tanto de inflorescencias con hojas como \u00e1filas, durante los 7 d\u00edas despu\u00e9s del rayado. A pesar del est\u00edmulo sobre el crecimiento reproductivo, se observ\u00f3 un incremento en malonildialdeh\u00eddo (mda) y de la fluorescencia clorof\u00edlica basal (fo) en hojas de los \u00e1rboles rayados, lo que es indicativo de da\u00f1o oxidativo y disfunci\u00f3n del apartato fotosint\u00e9tico, respectivamente. A pesar de ello, los an\u00e1lisis bioqu\u00edmicos registraron un incremento de la actividad de las enzimas ascorbato peroxidasa (apx), catalasa (cat), super\u00f3xido disminutasa (sod), glutati\u00f3n reductasa (gr) y dehidroascorbato reductasa (dhar), que act\u00faan de forma acoplada para extinguir ls especies reactivas del ox\u00edgeno (ros). Adem\u00e1s, se observ\u00f3 un incremento de la s\u00edntesis de carotenoides y cambios en el estado de de-epoxidaci\u00f3n (dps) del ciclo de las xantofilas que no conllev\u00f3 cambios en la disipaci\u00f3n energ\u00e9tica a trav\u00e9s del psii (npq). Otro<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Respuesta nutricional y fisiol\u00f3gica de los c\u00edtricos al rayado y sus implicaciones agron\u00f3micas<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Respuesta nutricional y fisiol\u00f3gica de los c\u00edtricos al rayado y sus implicaciones agron\u00f3micas <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Carlos Fernando Rivas Grela <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Polit\u00e9cnica de Valencia<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 31\/07\/2007<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Manuel Agusti Fonfria<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: vicente Almela orense <\/li>\n<li>Manuel Tal\u00f3n cubillo (vocal)<\/li>\n<li>lorenzo Zacarias garcia (vocal)<\/li>\n<li>salvador Zaragoza adriaensens (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Carlos Fernando Rivas Grela En el presente trabajo se estudi\u00f3 el efecto del rayado sobre la productividad [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","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-4)","background-image":"","background-repeat":"repeat","background-position":"center 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