“…Mycorrhization trials have been made with different micropropagated plant species: pine (Rancillac, 1982;Normand et al, 1996), birch (Grellier et al, 1984), poplar (Heslin and Douglas, 1986), eucalyptus (Poissonier, 1986;Tonkin et al, 1989), oak (Herrmann et al, 1998), chestnut (Strullu et al, 1986;Martins, 1992;2004;Martins et al, 1996;Martins and Pais, 2005), cork oak (Díez et al, 2000). These trials were performed as an effort to make micropropagation a sustainable propagation method for plant species recalcitrant to conventional propagation, increasing in vitro plant performances.…”