CRECIMIENTO RADIAL DEL CORCHO EN LOS ALCORNOCALES ESPAÑOLES: RELACIONES ENTRE ANATOMÍA Y BIOCLIMA.

A comparative study of the reproduction cork radial growth between the main cork productive areas in Spain is raised: Extremadura-Huelva, Cádiz, Girona and Castellón. The results show that environmental variables bring about significant differences in the annual increments and in the ratio between cork types (late/early cork). The highest average thickness had be en measured in Cádiz (Jerez de la Frontera - 5.587 mm) and the lowest in Castellón (Artana - 1.964 mm). Remaining results yield between 2.963 mm, measured in Sta. Cristina d' Aro (Girona), and 3.566 mm, in Casas de Miravete (Cáceres). These asymmetries are due to the higher early cork development. The most equilibrated corks in the contributions of each cork type are those produced in Cáceres (::::60:40) and Castellón (::::75:25), resisting with those observed in the other areas. The obtained results showed significant correlation with c1imatic (annual average temperature, precipitation) and bioc1imatic (It, Ic) parameters