Historic American Apple Cultivars: Identification and Availability

摘要

Apples (Malus Mill.) have been economically and socially important throughout the centuries in North America. Apple cultivar (Malus x domestica Borkh.) collections that include historic cultivars are valued for their unique diversity, historical significance, and also as a resource to identify unknown trees; however, not all of the historically significant apple cultivars are currently included in these collections. We used historic books, publications, and nursery catalogs to develop an inventory of apple cultivars that were propagated and grown in the United States before 1908. We collected synonym, introduction date, and original source country information for 891 historic apple cultivars. Most of the historic American cultivars originated as seedlings first planted in the United States. Some cultivars were brought to the United States from the United Kingdom, France, Russia, Germany, and other European countries. We classified historic apple cultivars based on their availability over time and popularity in nursery catalogs. Ninety percent of the most popular historic apple cultivars in the United States were available in 2015 in the U.S. and U.K. national collections and within several commercial and private collections. This work identified high priority historic cultivars that are not currently protected within genebanks that could be added to genebank collections in the future.