LOURIZÁN IDENTIFIES CROSSES OF CHESTNUT TREE WITH DRYOCOSMUS KURIPHILUS PEST RESISTANCES
Lourizán Forestry Research Centre reached the first preliminary conclusions which are going to be more extensive and consistent in 2018. The project results will be used to guide the new chestnut woods plantations.
The Dryocosmus kuriphilus pest, which was firstly detected in Galicia in 2014, is almost spread in the entire region. In order to face the problem, the biological struggle through the Torymus sinensis parasitoid insect is the only solution in short terms. However, in medium terms, there are more perspectives in order to reduce the Dryocosmus kuriphilus impact.Lourizán Forestry Research Centre works on the identification of controlled clones, varieties and crosses which can have pest resistances or tolerances.
The research team which works with the Dryocosmus kuriphilus in Lourizán, coordinated by Josefa Fernández, started the study in 2015, shortly after the detection of the pest in Galicia. The project is developed in a greenhouse: an insectarium hermetically sealed in order to prevent accidental pest releases; where clones, crosses and traditional chestnut varieties are exposed to the wasp infestation.
The first tests, started in 2015, focused hybrids clones which were led to forestry production, as well as controlled crosses between late varieties ("Garrida", "De Parede" and "Presa") and Eurasian hybrids. Two Asian species were also evaluated Castanea crenata and Castanea mollissima. The tests were extended to 10 chestnut tree varieties in 2016 and to 26 varieties in 2017, among which the most demanded are included.
The news is published in the Campo Galego web. In the following link you can read the full article: