Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben and Institute of Computer Science, Martin-Luther-University Halle-Wittenberg, Germany. grafahr@ipk-gatersleben.de|Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben and Institute of Computer Science, Martin-Luther-University Halle-Wittenberg, Germany. grafahr@ipk-gatersleben.de|Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben and Institute of Computer Science, Martin-Luther-University Halle-Wittenberg, Germany. grafahr@ipk-gatersleben.de|Leibniz-Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben and Institute of Computer Science, Martin-Luther-University Halle-Wittenberg, Germany. grafahr@ipk-gatersleben.de