1. Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Gatersleben, Germany;
2. Leibniz Institute of Plant Biochemistry (IPB), Halle, Germany;
3. Leibniz Institute of Vegetable and Ornamental Crops (IGZ), Großbeeren & Erfurt, Germany;
4. Institute for Biology of the University Erlangen‐Nuernberg, Erlangen, Germany