Robert Krueger. Learn about the importance of conserving diverse genetics from citrus relatives. See how trifoliate oranges (Poncirus) and citranges helped provide disease resistant rootstocks to the citrus industry. The National Clonal Germplasm Repository for Citrus and Dates in Riverside, California is the genebank responsible for maintaining world-class collections of citrus crops and their wild relatives for the USDA National Plant Germplasm System.
History of Citrus Rootstocks
