1. Plant Gene Resources of CanadaSaskatoon Research CentreAgriculture and Agri‐Food Canada 107 Science Place Saskatoon SK Canada S7N 0X2
2. Dep. of Plant SciencesUniv. of Saskatchewan 51 Campus Dr. Saskatoon SK Canada S7N 5A8
3. Dep. of BiologyMcGill Univ. Montreal QC Canada H3A 1B1