Document details

Morfoanatomia foliar de onze cultivares de videira (Vitis vinifera L.subsp. vinifera)

Author(s): Santos, Ana Cristina Rocha de Figueiredo

Date: 2014

Persistent ID: http://hdl.handle.net/10400.5/8287

Origin: Repositório da UTL

Subject(s): leaf; mesophyll; stomata; indumentum; cultivars; grapevine


Description

This work describes the leaf morphoanatomy of 11 grapevine cultivars, grown at Tapada Ajuda, Lisbon. The white cultivars studied were ‘Alvarinho’, ‘Arinto’, ‘Encruzado’, ‘Macabeu’, ‘Moscatel Galego’, ‘Moscatel de Setúbal’ and ‘Viosinho’. The red ones were ‘Cabernet Sauvignon’, ‘Syrah’, ‘Touriga Nacional’ and ‘Trindadeira’. The leaf area was determined by scanning and under Light Microscopy the thickness of the cuticule, epidermis, total mesophyll as well as palisade and spongy parenchyma. Under Scanning Electron Microscopy, stomata type, their length and width and density were observed, as the existence of indumentum. Significant differences were observed among the white and red cultivars for all the parameters studied. In general, leaves with lower specific weight showed ticker spongy parenchyma. In all cultivars, three types of stomata were observed – at the same level, raised above and sunken regarding the other epidermal cells, showing differences among their relative proportions. ‘Moscatel de Setúbal’ and ‘Moscatel Galego’ showed the highest stomata density value, for the white cultivars. Among the red ones, differences in the sunken and raised above stomata were observed, but not for the same level stomata. ‘Trincadeira’ presented the highest value for the leaf area, the greater stomata density and the highest sunken stomata percentage, with 38.1%.

Mestrado em Engenharia Agronómica - Instituto Superior de Agronomia

Document Type Master thesis
Language Portuguese
Advisor(s) Monteiro, Ana Maria da Silva; Xavier, Generosa Maria Manso Teixeira
Contributor(s) Santos, Ana Cristina Rocha de Figueiredo
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