sentences:  However, Georg Scheu's son Heinz Scheu has claimed in a book that Siegerrebe was the result of self-pollination of Madeleine Angevine.Siegerrebe received varietal protection and was released for general cultivation in Germany in 1958.In 2006, there were of Siegerrebe in Germany with a decreasing trend, in similarity with other "new breeds" of white varieties.