Molecular characterization and seed germination of blue corn landraces with accelerated aging.
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| Autores: | , , , , |
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| Formato: | artículo original |
| Estado: | Versión publicada |
| Fecha de Publicación: | 2011 |
| Descripción: | The objectiveof this work was to determine the effect of accelerated agingon seeds of blue corn landraces. The study was conducted inthe laboratorie s of National Polytechnic Institute and NationalUniversity of México. See ds of four blue corn landraces(Cuijingo, Cocotitlán, Puebla and Oaxaca), were subjectedto accelerated aging treatments: humid heat (HH, 41°C, 72h, and 100% r. h.), and dry heat (DH, 60°C, 48 h. The parametersmeasured were: radicle protrusion (RP) in at 0 to 72h of imbibition, and after seven days of incubation at 25°C,normal seedlings (NS ), abnormal seedlings (AS ), and deadseeds (DS) were counted. The molecular characterization byRA PD was also performed and the respective dendrogramswere constructed. In normal seedlings obtained from seedswithout accelerated ageing, the varie tie s Oaxaca and Pueblawere significantly superior. Seedling dry weight diminishedwith deterioration, being minimum under dry heat. The numberof abnormal seedlings increased under both deteriorationtreatments, in the order Oaxaca, Puebla, Cocotitlán andCuijingo. Differentiation of the band profiles among controland deteriorated seeds occurred in the sequence: Oaxaca(31,6%), Cocotitlán (25,8%), Puebla (19,6%) and Cuijingo(18,6%). These similarity values were inversely related toseed vigour, and irectly related to the presence of abnormalities in seedlings. |
| País: | Portal de Revistas UCR |
| Institución: | Universidad de Costa Rica |
| Repositorio: | Portal de Revistas UCR |
| Lenguaje: | Español |
| OAI Identifier: | oai:portal.ucr.ac.cr:article/11833 |
| Acceso en línea: | https://revistas.ucr.ac.cr/index.php/agromeso/article/view/11833 |
| Access Level: | acceso abierto |
| Palabra clave: | Zea mays seed viability genomic finger printing RAPDs. viabilidad seminal huella genómica |