{"id":53610,"date":"2018-03-09T22:41:20","date_gmt":"2018-03-09T22:41:20","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/control-de-la-floracion-en-el-genero-prunus-factores-climaticos-y-nutricionales\/"},"modified":"2018-03-09T22:41:20","modified_gmt":"2018-03-09T22:41:20","slug":"control-de-la-floracion-en-el-genero-prunus-factores-climaticos-y-nutricionales","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-de-la-vida\/control-de-la-floracion-en-el-genero-prunus-factores-climaticos-y-nutricionales\/","title":{"rendered":"Control de la floraci\u00f3n en el g\u00e9nero prunus. factores clim\u00e1ticos y nutricionales"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Diego Esteban Gonz\u00e1lez Rossia <\/strong><\/h2>\n<p>Los prunus tienen tendencia a cuajar muchos frutos, lo que reduce las posibilidades de obtener frutos con buen tama\u00f1o y calidad. Esta tesis doctoral describe una t\u00e9cnica agron\u00f3mica basada en la aplicaci\u00f3n de \u00e1cido giber\u00e9lico (ga3), para reducir la floraci\u00f3n y los costos de aclareo manual en cultivares de prunus. Tambi\u00e9n se estudian las implicaciones de los frutos y los inhibidores de la s\u00edntesis de giberelinas (paclobutrazol, prohexadione-ca) en el proceso de la floraci\u00f3n. Complementariamente, se estudiaron los requerimientos de temperatura para la brotaci\u00f3n y floraci\u00f3n, y su dependencia de los contenidos en carbohidratos (ch). La aplicaci\u00f3n de ga3 durante el per\u00edodo de inducci\u00f3n floral redujo la floraci\u00f3n en unos 40%-50% en melocotones, nectarinas y ciruelos, siendo 50 mg 1-1 la dosis m\u00e1s adecuada de ga3. El tratamiento afect\u00f3 la distribuci\u00f3n de las flores a lo largo del ramo y algunos aspectos de la eficiencia del psii. Se comprob\u00f3 un efecto inhibidor del fruto sobre el proceso de floraci\u00f3n, directamente mediante la reducci\u00f3n del n\u00famero de yemas florales (yf), e indirectamente reduciendo el n\u00famero de brotes en desarrollo. De ah\u00ed que se proponga la hip\u00f3tesis de que la floraci\u00f3n no es un proceso inductivo, sino m\u00e1s bien un proceso inhibitorio. Tanto el contenido de ch del floema de brotes y de ra\u00edces fibrosas, no ha podido relacionarse con el proceso de iniciaci\u00f3n floral, aunque s\u00ed con los requerimientos energ\u00e9ticos para brotar. Sin embargo, se han encontrato evidencias de algunas perturbaciones en el proceso de reducci\u00f3n del i\u00f3n nitrato en \u00e1rboles con escasa tendencia a florecer. Los experimentos sobre varetas, demostraron que el fr\u00edo promueve la brotaci\u00f3n de yemas vegetativas (yv) y yf, siendo mayor el efecto sobre las primeras. Una gran acumulaci\u00f3n de fr\u00edo disminuye el porcentaje la brotaci\u00f3n de las yf en cultivares con bajos requerimientos de fr\u00edo disminuyendo el tiemp\u00ed\u00b2 medio de brotaci\u00f3n (mtb<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Control de la floraci\u00f3n en el g\u00e9nero prunus. factores clim\u00e1ticos y nutricionales<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Control de la floraci\u00f3n en el g\u00e9nero prunus. factores clim\u00e1ticos y nutricionales <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Diego Esteban Gonz\u00e1lez Rossia <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Polit\u00e9cnica de Valencia<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 29\/06\/2006<\/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: manuel Abad berjon <\/li>\n<li>marisa Badenes catala (vocal)<\/li>\n<li>gerardo Llacer ill (vocal)<\/li>\n<li>Fernando Fornes sebasti\u00e1 (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Diego Esteban Gonz\u00e1lez Rossia Los prunus tienen tendencia a cuajar muchos frutos, lo que reduce las posibilidades [&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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