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Reunión
Anual del Grupo de Trabajo de Forestales, parques y Jardines, Logroño
2004
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4205 |
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Estudio de los tipos de compatibilidad vegetativa de Cryphonectria
parasitica en castaños de Galicia
O.
Aguín¹, J.P. Mansilla¹ , M. Mata¹, A. Romero² Y F.
Ruiz²
1 Estación Fitopatolóxica do Areeiro ,
Excma. Diputación Provincial de Pontevedra, Subida a la Robleda s/n,
36153 Pontevedra, España. www.efa-dip.org
2 Xunta de Galicia.
Consellería de Medio Ambiente. Dirección Xeral de Montes e
Industrias Forestais. San Lázaro s/n.15703 Santiago de Compostela. A
Coruña.
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ABSTRACT: Chestnut blight is a quarantine disease caused
by Cryphonectria parasitica Murrill (Barr). The high incidence of the
disease in chestnuts growing in northwestern Spain (Mansilla et al.,
2000;Valdezate et al., 2001;Homs et al., 2002) led to the implementation of a
control method to reduce or paliate damage caused by this pathogen. So far,
biological control using hypovirulent strains seemed to be the most effective
in European countries such as Italy and France (Cortesi et al., 1998). But the
success of this method is influenced by several factors. The number of
vegetative compatibility types (vc) of C. parasitica populations needs
to be low and the hypovirulent has to be compatible with the virulent mycelia,
since the transmission of the hypovirus is more efficient among strains
belonging to the same compatibility type (Anagnostakis, 1977). Thus, the
objective of the present work was to determine the vegetative compatibility
types (vc) of C. parasitica in Galician chestnuts as a previous step for
an establishment of a biological control program in Galicia.
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