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On-line version ISSN 1806-9088
BANDEIRA, Fabiana Schmidt; XAVIER, Aloisio; OTONI, Wagner Campos and LANI, Elisonete Ribeiro Garcia. Ex vitro acclimatization of plants propagated by in vitro grafting of Eucalyptus urophylla x E. grandis clones. Rev. Árvore [online]. 2007, vol.31, n.5, pp.773-781. ISSN 1806-9088. http://dx.doi.org/10.1590/S0100-67622007000500001.
This work aimed to evaluate the survival and growth of two Eucalyptus urophylla x E. grandis clones obtained by in vitro grafting technique during the ex vitro acclimatization stage. Grafted plants were obtained from rootstocks from seedlings of in vitro-germinated Eucalyptus grandis and E. urophylla, and apexes from stem tips (average 10 mm) of two micropropagated Eucalyptus urophylla X E. grandis clones. After 50 days of in vitro culture, the plants were transferred to ex vitro conditions and plant survival and growth were evaluated. High grafting survival rates (87%) were recorded at 70 days in the ex vitro condition, as well as good height growth. Clones showed similar performance in relation to the used stocks, indicating that the chosen acclimatization process was efficient.
Keywords : Vegetative propagation; in vitro propagation; tissue culture.