{"id":67544,"date":"2018-03-09T22:55:59","date_gmt":"2018-03-09T22:55:59","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/obtencion-de-ha%c2%adbridos-triploides-ca%c2%adtricos\/"},"modified":"2018-03-09T22:55:59","modified_gmt":"2018-03-09T22:55:59","slug":"obtencion-de-ha%c2%adbridos-triploides-ca%c2%adtricos","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-de-la-vida\/obtencion-de-ha%c2%adbridos-triploides-ca%c2%adtricos\/","title":{"rendered":"Obtenci\u00f3n de h\u00edbridos triploides c\u00edtricos"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Pablo Aleza Gil <\/strong><\/h2>\n<p>Resumen: la presencia de semillas en los frutos de mandarina es una caracter\u00edstica indeseable ya que el mercado de consumo en fresco no acepta frutos con semillas. Los h\u00edbridos triploides de c\u00edtricos son de gran inter\u00e9s ya que no producen semillas ni inducen la formaci\u00f3n de semillas en otros genotipos por polinizaci\u00f3n cruzada. Los h\u00edbridos triploides se pueden obtener mediante hibridaci\u00f3n som\u00e1tica entre protoplastos haploides y diploides y mediante hibridaci\u00f3n sexual entre parentales diploides y entre parentales diploides y tetraploides. El objetivo general de esta tesis doctoral es la obtenci\u00f3n de parentales para la producci\u00f3n de h\u00edbridos triploides de c\u00edtricos, la caracterizaci\u00f3n de los diferentes tipos de hibridaciones sexuales que permiten obtener h\u00edbridos triploides y un mejor conocimiento de la biolog\u00eda reproductiva de los c\u00edtricos en relaci\u00f3n con la obtenci\u00f3n de h\u00edbridos triploides. Estos objetivos generales se concretan en los siguientes objetivos espec\u00edficos: 1. Obtenci\u00f3n de plantas haploides mediante la t\u00e9cnica de ginog\u00e9nesis in situ inducida por polen irradiado y posterior rescate y cultivo de embriones in vitro. Se han obtenido genotipos haploides, dobles haploides y aneuploides de clementina `clemenules\u00c2\u00bf y uno de los genotipos haploides ha sido elegido por el consorcio internacional de gen\u00f3mica de c\u00edtricos para la secuenciaci\u00f3n del genoma completo de los c\u00edtricos. 2. Obtenci\u00f3n de plantas tetraploides de diferentes genotipos apom\u00edcticos de mandarinos, naranjos dulces y pomelos que puedan ser utilizados como parentales masculinos en hibridaciones 2x x 4x para la obtenci\u00f3n de h\u00edbridos triploides. Mediante citometr\u00eda de flujo se han identificado plantas tetraploides espont\u00e1neas en 15 genotipos de los 17 estudiados, con frecuencias que oscilaron entre el 9,7% en mandarino `kinnow\u00c2\u00bf y el 0,5% en mandarino `page\u00c2\u00bf. Se demuestra que todos los genotipos tetraploides obtenidos proceden de la duplicaci\u00f3n del n\u00famero de cromosomas de c\u00e9lulas de la nucela. 3. Obtenci\u00f3n<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Obtenci\u00f3n de h\u00edbridos triploides c\u00edtricos<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Obtenci\u00f3n de h\u00edbridos triploides c\u00edtricos <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Pablo Aleza Gil <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Polit\u00e9cnica de Valencia<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 20\/10\/2008<\/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>Luis Navarro Lucas<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: vicente Moreno ferrero <\/li>\n<li>fran\u00f3is l\u00e9on Luro (vocal)<\/li>\n<li>Mar\u00eda Herrero romero (vocal)<\/li>\n<li>Mar\u00eda Luisa Badenes catal\u00e1 (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Pablo Aleza Gil Resumen: la presencia de semillas en los frutos de mandarina es una caracter\u00edstica indeseable [&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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