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Madera y bosques

versión On-line ISSN 2448-7597versión impresa ISSN 1405-0471

Resumen

ARAMBULA-SALAZAR, Jorge Armando et al. Seasonal variation in the phenolic content of oak leaves (Quercus sideroxyla) in different soil textures. Madera bosques [online]. 2010, vol.16, n.3, pp.49-59. ISSN 2448-7597.

The seasonal variation and the soil texture effect were evaluated in the phenolic contents (Folin-Ciocalteu) of Quercus sideroxyla (red oak) leaves as a parameter of the genus deterioration. Leaves of six trees from eight sites were sampled and their edaphic characteristics determined as soil texture: clayed (12,5%), lime-clayed (75%) and clay-sandy (12,5%). Soils and sites were unaltered during the four season collections. It was found in spring a notorious decrease in phenolic content of Quercus leaves followed by a substantial increase during summer. A high positive correlation was found between phenolic content of leaves and electric conductivity of clay-sandy soils, and also between soil moisture retention and phenolic content, independently of the soil texture.

Palabras llave : Oak; phenolic; leaves; Quercus sideroxyla; soil.

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