Fig. 5
From: Key lessons from resistant tree breeding programmes in the Northern Hemisphere
Timeline indicating prominent events in Western White Pine (WWP) breeding programmes carried out in North America. Programmes shown: Dorena Genetic Resource Centre (blue text, solid lines); British Columbia Ministry of Forests (red text, dashed lines); Inland Empire Tree Improvement Co-operative (brown text, dotted lines). Numbered references are: 1King et al. (2010). 2McDonald et al. (1984). 3Sniezko et al. (2012). 4Kinloch et al. (1999). 5Hunt (2004). 6Bingham (1983). 7Fins et al. (2001). 8Hoff and McDonald (1980). 9Kearns et al. (2012). 10Mahalovich (2010). 11Schwandt et al. (2013)