{"id":81864,"date":"2018-03-10T00:05:45","date_gmt":"2018-03-10T00:05:45","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/caracterizacion-racial-de-aislados-de-plasmopara-halstedii-mildiu-del-girasol-y-estudio-de-herencia-de-la-resistencia-en-lineas-puras-de-helianthus-annuus-l\/"},"modified":"2018-03-10T00:05:45","modified_gmt":"2018-03-10T00:05:45","slug":"caracterizacion-racial-de-aislados-de-plasmopara-halstedii-mildiu-del-girasol-y-estudio-de-herencia-de-la-resistencia-en-lineas-puras-de-helianthus-annuus-l","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-agrarias\/caracterizacion-racial-de-aislados-de-plasmopara-halstedii-mildiu-del-girasol-y-estudio-de-herencia-de-la-resistencia-en-lineas-puras-de-helianthus-annuus-l\/","title":{"rendered":"Caracterizacion racial de aislados de plasmopara halstedii (mildiu del girasol) y estudio de herencia de la resistencia en lineas puras de helianthus annuus l."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Mar\u00eda  Leire Molinero Ruiz <\/strong><\/h2>\n<p>De plantas de girasol con s\u00edntomas de mildiu tomadas entre 1994 y 1998 en  distintas zonas de espa\u00f1a, se obtvieron 85 aislados de p. Halstedii. todos ellos se inocularon en l\u00edneas de girasol adem\u00e1s de la 1. Esta,sigue siendo la raza m\u00e1s extendida, y la 10 -m\u00e1s virulenta que las dem\u00e1s parece restringida a la zona nororiental del pa\u00eds.  al estudiar la virulencia (fcv) de aislados monoespor\u00e1ngicos y masales del hongo, as fcv obtenidas no siempre coincidieron con las esperadas, lo que indic\u00f3 una alta heterogeneidad patog\u00e9nica de aislados. Adem\u00e1s, la identificaci\u00f3n de genotipos de p. Hastedii parece relacionarse con el genotipo hu\u00e9sped en intercci\u00f3n con el hongo.  se efectuaron cruces de las l\u00edneas ha-61, rha-274, rha-235 y 799-1 por los parentales susceptibles ha-89 y cmsha-89, y se evaluaron las reacciones de sus descendencias f2 y r1 a las razas 6,7 \u00f3 10 del hongo.  la resistencias a la raza 6 y a la 7 en ha-61 y rha-274, as\u00ed como las resistencias en la raza 6 y a la 10 en 799-1, parecen estar reguladas por dos genes dominantes, siendo uno epist\u00e1tico sobre el otro. La resistencia de rha-325 a la raza 7 parece estar regulada por dos genes complementarios. Ha-89 y cmsha-89 parecen portar alelos que modifican las segregaciones esperadas en las descendencias de ha-61, rha-274 y 799-1 y act\u00faan en la regulaci\u00f3n de la resistencia de rha-325.  de 42 aislados de p. Halstedii evaluadas frente a la dosis comercial de metalaxyl, solo uno de ellos fue tolerante. Al efectuar tratamientos a dosis menores, se distinguieron tres grupos de aislados en funci\u00f3n de su reacci\u00f3n: tolerantes, moderadamente tolerantes y sensibles. Se compar\u00f3 la efectividad de dos  formularios de metalaxyl aplicadas a las dosis y frente a dos aislados de diferente tolerancia. La incidencia de plantas con s\u00edntomas dependi\u00f3 \u00fanicamente del h\u00edbrido inoculado. En el experimento con el aislado m\u00e1s tolerante, se observo menos esporulaci\u00f3n en el h\u00edbrido d<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Caracterizacion racial de aislados de plasmopara halstedii (mildiu del girasol) y estudio de herencia de la resistencia en lineas puras de helianthus annuus l.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Caracterizacion racial de aislados de plasmopara halstedii (mildiu del girasol) y estudio de herencia de la resistencia en lineas puras de helianthus annuus l. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Mar\u00eda  Leire Molinero Ruiz <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 C\u00f3rdoba<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 20\/12\/1999<\/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>Jos\u00e9 Mar\u00eda Melero Vara<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Rafael manuel Jimenez diaz <\/li>\n<li>ignacio Solis martel (vocal)<\/li>\n<li>Jos\u00e9 Mart\u00ednez fern\u00e1ndez (vocal)<\/li>\n<li>Carlos Lopez herrera (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Mar\u00eda Leire Molinero Ruiz De plantas de girasol con s\u00edntomas de mildiu tomadas entre 1994 y 1998 [&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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