Evaluation of foliar resistance to Phytophthora infestans in potato varieties in Belgium (2013-2014)
- César, V. (2015). Evaluation of foliar resistance to Phytophthora infestans in potato varieties in Belgium (2013-2014). Poster in: Euroblight workshop, Brasoc (Romania),
|Evaluation of foliar resistance to Phytophthora infestans in potato varieties in Belgium (2013-2014)
|Late blight caused by Phytophthora infestans is one of the most devastating diseases of potato. Under favorable environmental conditions and without fungicide protection, the foliage of susceptible varieties can be destroy in a few weeks. Its development is closely linked to climatic conditions: the mild and humid climate, frequently encountered in Western-Europe is usually responsible for epidemics. Farmers are interested to know information about resistance to late blight especially for the organic farming system. Indeed, the use of less susceptible varieties typically saves several fungicides applications on a season and reduce the environmental impact. In 2013 and 2014, 36 varieties were tested for their susceptibility to late blight. This study was performed under natural conditions. The dynamic of the foliage destruction was measured and a score of 1 to 9 has been assigned to each of the varieties. 6 varieties have scored higher than 8,5. Results are also used to identify new genotypes in order to use it in our breeding program.