Fig. 2
From: Key lessons from resistant tree breeding programmes in the Northern Hemisphere
Timeline indicating prominent events in American chestnut (Castanea dentata) breeding programme carried out by the American Chestnut Co-operators Foundation (ACCF). Numbered references are: 1Jacobs et al. (2013). 2Griffin et al. (1983). 3http://www.accf-online.org/accf1.htm. 4http://www.accf-online.org/breed.html. 5ACCF Newsletters (2002–2017; http://www.accf-online.org/news.html). 6Griffin et al. (2005)