4 research outputs found

    Chlorophyll fluorescence imaging reveals genetic variation and loci for a photosynthetic trait in diploid potato

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    Physiology and genetics are tightly interrelated. Understanding the genetic basis of a physiological trait such as the quantum yield of the photosystem II, or photosynthetic responses to environmental changes will benefit the understanding of these processes. By means of chlorophyll fluorescence (CF) imaging, the quantum yield of photosystem II can be determined rapidly, precisely and non-invasively. In this article, the genetic control and variation in the steady-state quantum yield of PSII (桅PSII) is analyzed for diploid potato plants. Current progress in potato research and breeding is slow due to high levels of heterozygosity and complexity of tetraploid genetics. Diploid potatoes offer the possibility of overcoming this problem and advance research for one of the globally most important staple foods. With the help of a diploid genetic mapping population two genetic loci that were strongly associated with differences in 桅PSII were identified. This is a proof of principle that genetic analysis for 桅PSII can be done on potato. The effects of three different stress conditions that are important in potato cultivation were also tested: salt stress, low temperature and deficiency in the macronutrient phosphate. For the last two stresses, significant decreases in photosynthetic activity could be shown, revealing potential for stress detection with CF based tools. In general, our findings show the potential of high-throughput phenotyping for physiological research and breeding in potato.</p

    Memoria: Desarrollo de estrategias de comunicaci贸n mediante el estudio de la relaci贸n entre arte, documento y archivo para visibilizar la labor art铆stica del CIDEA

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    Programa de trabajo final de graduaci贸n modalidad seminarioEl estudio de las estrategias del archivo en el 谩mbito del arte se genera a trav茅s de la experimentaci贸n y el ejercicio cr铆tico en el desarrollo de estrategias de comunicaci贸n y sus correspondientes modelos determinados por el personal docente del seminario: revista, exhibici贸n y propuesta art铆stica. Los modelos fueron asignados uno a cada subgrupo de trabajo, demandaron la aplicaci贸n de conocimientos te贸rico-pr谩cticos, habilidades y herramientas adquiridas en los a帽os de aprendizaje en la carrera de Arte y Comunicaci贸n Visual, as铆 como durante el proceso de investigaci贸n del seminario. Estos modelos se consideraron experimentales por su proceso creativo y por su car谩cter de innovaci贸n que consisti贸 en repensar el archivo como parte de los insumos art铆sticos dentro del CIDEA. Se desea que estos subproductos sienten las bases de una discusi贸n argumentativa que permita contemplar futuros desarrollos o la evoluci贸n de las alternativas que se presenten como fruto de esta investigaci贸n.Escuela de Arte y Comunicaci贸n Visua
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