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In vitro propagation of tolerant alders for the conservation of riverbanks. Study of their resistance to phytophthora alni

Document Citado por Relacionados
Vincent
AutorM. C. San José - M. J. Cernadas - L. V. Janeiro - N. Blázquez - F. Mosteiro - A. De Anta - E. De Castro - B. Cuenca
Páginas103-109
103
IN VITRO PROPAGATION OF TOLERANT
ALDERS FOR THE CONSERVATION OF
RIVERBANKS. STUDY OF THEIR RESISTANCE
TO PHYTOPHTHORA ALNI
M.C. San José a, M.J. Cernadas a, L.V. Janeiro b, N. Blázquez a,
F. Mosteiro a, A. De Anta c, E. De Castro c y B. Cuenca d
a Instituto de Investigaciones Agrobiológicas de Galicia, CSIC, Avda. de Vigo s/n,
15705 Santiago;
b Diputación de Lugo. San Marcos 8, 27001 Lugo;
c Confederación Hidrográfica Miño-Sil (CHMS), El Progreso 6, 32005 Ourense;
dTRAGSA, Vivero de Maceda, 32700 Maceda, Ourense
Corresponding author: sanjose@iiag.csic.es
I. INTRODUCTION
The common alder [Alnus glutinosa (L.) Gaertn.] is a medium-sized
tree that is widely distributed over the continent of Europe, north and
north-east Asia, and north-east Africa, where it has considerable
importance in the maintenance of the riparian ecosystems. In the last few
years, its habitat has greatly deteriorated, not only due to deforestation,
but also due to the effect of different diseases, among which should be
highlighted is that known as alder blight disease caused by the Phytophthora
alni oomycete (Brasier et al., 2004). The disease has caused the death of
numerous specimens without there being, until now, any effective method
for its control.
Biotechnology techniques, in particular micropropagation, offer the
possibility to propagate, conserve, and improve selected specimens of
different species. Within these methods, the in vitro propagation by means
axillary buds culture is the most widely used, since it ensures the genetic
stability of the micropropagated material, as well as the production of a
large number of plants in a relatively short period of time. The first works
on the in vitro regeneration of alder go back to the 1980’s in which the
importance of actinorhizal host plants in forestry were recognized.

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