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Características macroscópicas y microscópicas de seis genotipos de vid (Vitis spp.) con distintos niveles de susceptibilidad a Mildiu

Authors: Boso Alonso, Susana; Alonso-Villaverde Iglesias, Virginia; Santiago Blanco, José Luis; Gago Montaña, Pilar; Dürrenberger, M.; Düggelin, M.; Kassemeyer, H. H.; +1 Authors

Características macroscópicas y microscópicas de seis genotipos de vid (Vitis spp.) con distintos niveles de susceptibilidad a Mildiu

Abstract

[ES] Se estudió la morfología foliar en 5 genotipos de vid pertenecientes a Vitis vinifera, y uno de la spp. Vitis riparia. Estudios previos, demostraron la existencia de diferentes niveles de susceptibilidad a Mildiu (Plasmopara viticola). El objetivo fue comprobar si existen diferencias en hoja a nivel macro y microscópico entre estos genotipos, que pudiese tener alguna relación con la susceptibilidad a Mildiu. Se observaron diferencias macroscópicas entre los diferentes genotipos en relación a la morfología de la hoja. Los estudios microscópicos también mostraron diferencias en cuanto al índice estomático en el envés de la hoja, a la densidad de pelos, en el grosor de limbo y en la morfología y grosor del parénquima en empalizada y lagunar. Se comprobó que las dos variedades que en estudios anteriores se mostraron como las menos susceptibles a Mildiu, fueron las más similares en cuanto a las características de su parénquima lagunar y ambas presentaban ausencia o una proporción muy baja de ceras en su parte abaxial.

[EN] This work reports the leaf morphology of five grapevine genotypes belonging to Vitis vinifera and one to Vitis riparia. Earlier studies showed different levels of susceptibility to grapevine downy mildew (Plasmopara viticola). The aim was to detect differences between the leaf morphology of these cultivars at the macro- and microscopic levels, and their possible association with susceptibility and resistance to downy mildew. Distinct macroscopical differences among the genotypes were seen in terms of leaf morphology. The microscopical studies revealed also differences in the stomatal index of the lower sides of the leaves, in the thickness of the limbus, and in the morphology and thickness of the palisade and spongy mesophyll cells. The two cultivars that in earlier studies were found to be the least susceptible to downy mildew were the most similar in terms of their spongy mesophyll. Both showed very little or no wax on the abaxial surface of their leaves.

8 páginas, 5 figuras, 1 tabla.- Este trabajo se presentó en el Congreso celebrado en Zagreb (Croacia) entre el 28 de junio y el 3 de julio de 2009.

Esta investigación fue financiada con becas de la Fundación Martin Escudero y del Ministerio de Educación y Ciencia (España).

Peer reviewed

Keywords

Ampelogaphy, Histology, Susceptibility, Susceptibilidad, Vitis vinifera L., Ampelografía, Histología, Downy mildew, Mildiu

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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.
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influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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impulse
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