The red grape variety originates from England. Synonyms are Caillaba, Ingram's Hardy, Ingram's Hardy Prolific Muscat, Ingrams, Kader's Vineyard no. 30, Muscat Caillaba, Muscat d'Eisenstadt, Muscat de Noir Eisenstadt, Muscat Ingram, Muscat Ingram Prolific, Muscat Ingranis, Muscat Ingram's, Muscat Ingranis, Muscat Noir d'Eisenstadt, Muscat Rustique Prolifique de Ingram and Prolific Muscat. The selection was made by a private breeder named Ingram. The selection was made by a private breeder named Ingram. According to DNA analyses last done in 2018, it is a presumed natural cross between Muscat Blanc x unknown partner. However, this is based on only 20 DNA markers (see Molecular genetics). The variety was a crossing partner of the new varieties Menoir, Muscat St. Laurent, Muskat-Ottonel and Regner. It is a parent of the variety Muscat Gris de la Calmette, which was created by natural crossing.
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