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Generación y valoración de líneas tolerantes a la salinidad

Authors: Català, Maria M.; Domingo, Concha; Tomàs, Núria; Pla, Eva;

Generación y valoración de líneas tolerantes a la salinidad

Abstract

La salinidad es un problema creciente en la agricultura que afecta a muchos cultivos disminuyendo el rendimiento de las cosechas. Para tratar esta problemática en el cultivo del arroz, el IRTA de Amposta y el IVIA en el 2011 iniciaron un proyecto de 3 años. El objetivo fue caracterizar molecularmente, fisiológicamente y agronómicamente una colección de variedades mutantes de arroz obtenidas a partir del Bahía mediante irradiación y preseleccionadas previamente en base a la mayor tolerancia a elevadas concentraciones de sal en cultivo hidropónico. El ensayo de valoración agronómica se realizó en el delta del Ebro, en dos localizaciones con niveles de salinidad de 5,31 dS/m (zona no salina) y de 53,60 dS/m (zona salina). El diseño experimental fue de bloques al azar con 4 repeticiones y se testaron 6 variedades mutantes del Bahía comparadas con el propio Bahía. Durante todo el cultivo se evaluó el desarrollo agronómico de cada una de las variedades. En general, las condiciones de salinidad extrema afectaron de forma negativa al vigor de las plantas, a la altura, a la densidad de panículas, al número de panículas y en consecuencia a la producción, con una disminución en este último parámetro del 30%. De todas las variedades mutantes testadas, destacó la MS por presentar los mejores resultados de desarrollo agronómico en condiciones salinas, obteniendo el valor máximo de densidad de panículas y de producción.

Country
Spain
Keywords

Variedades de arroz, Resistencia a la salinidad, Salinidad, P33 Soil chemistry and physics, F40 Plant ecology, F30 Plant genetics and breeding

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green