Pinot blanc and Pinot gris arose as independent somatic mutations of Pinot noir
By S. Vezzulli, U. Malossini, L. Leonardelli, M. Stefanini, F. Mattivi, R. Velasco, C. Moser. 2014
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View Paper: https://www.semanticscholar.org/paper/da0f0a5895ec3e6f0d4c4984471bdfb2903b8ac9