Hans M. Heybroek

Dr Hans M. Heybroek is a Dutch botanist best known for his researches into the genus Ulmus. Director of the Dorschkamp Research Institute for Forestry & Landscape Planning from 1954 until his retirement in 1992, he was responsible for the raising and release of numerous elm hybrid cultivars, notably Columella. Before he took charge of the institute, Heybroek investigated the Coral Spot fungus Nectria cinnabarina in elm. In 1960 he travelled to the Kashmir to search for a frost-hardy form of the Himalayan Elm Ulmus wallichiana as a source of anti-fungal genes, for use in the Dutch elm research programme.

Publications

• The Dutch elm breeding program. Dutch Elm Disease Research, Chapter 3, in Sticklen & Sherald, Eds. (1993). Springer Verlag, New York, USA.
• Elms of the Himalaya (co-author R. Melville). Kew Bulletin Vol. 26(1), 1971, London.
• Resistant Elms for Europe. In Burdekin, D. A. (Ed.) Research on Dutch elm disease in Europe. For. Comm. Bull. 60. pp 108 - 113. 1983.