Major differences in susceptibility to a key pathogen among various grapevine cultivars

What is it about?

Botrytis cinerea is a major, key, fungal pathogen in grapevine worldwide. The susceptibility of winegrape cultivars to Botrytis cinerea is a debated topic, and the available classifications are based on professional experience rather than on experimental data. The main aim of this study was to compare and classify the susceptibility of several winegrape cultivars to B. cinerea and its relation to fruit maturity under two contrasting climatic and cropping conditions : Chile and France. As the main conclusion, the classification of cultivars according to the susceptibility to B. cinerea was similar in both countries, despite the contrasting climatic conditions and cropping practices.

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Why is it important?

This study is important because the precise knowledge about grapevine cultivar susceptibility is a key parameter in plant disease management for helping to reduce the number of fungicide applications.

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