1. Plant Science and Breeding Simon H. Steiner, Hopfen GmbH Mainburg Germany
2. Deptartment of Bioorganic Chemistry Leibniz Institute of Plant Biochemistry (IPB) Halle/Saale Germany
3. Research and Development S.S. Steiner, Inc. New York USA
4. Institute of Agricultural and Nutritional Sciences Martin‐Luther University (MLU) Halle/Saale Germany
5. Department of Molecular Genetics Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) Seeland Germany
6. Institute for Ecological Chemistry, Plant Analysis and Stored Product Protection Julius Kühn‐Institute (JKI), Federal Research Centre for Cultivated Plants Berlin Germany