Ringtest to evaluate four methods of resistance testing in fodder radish against Meloidogyne chitwoodi

To measure levels of resistance in fodder radish cultivars a reliable, objective and cost effective testing method is required. In 2006 German and Dutch plant breeder’s organizations (Bundesverband Deutscher Pflanzenzüchter; BDP and Plantum), a number of research institutes (PRI, PPO (WUR) and JKI) and breeding companies started this “Ring test project”.Aim of this project was to compare different methods to quantify the level of resistance in fodder radish varieties against Meloidogyne chitwoodi. The final aim is to find the best method and criteria which can serve as an European standard for evaluation of the level of resistance in fodder radish (Raphanus sativus) against M. chitwoodi. In total four fodder radish genotypes, delivered by various breeding companies, and one reference (susceptible) fodder radish cultivar were investigated with three different lab tests and one field-experimen