© 1984 by Institute of Chartered Foresters
Isoperoxidase Variation in Ulmus L
Department of Applied Biology Cambridge
Institute of Terrestrial Ecology Merlewood, Grange-over-Sands
Isoperoxidase zymograms are presented for leaf extracts of 69 English and 16 exotic elm trees. The commonest zymogram was found in some samples of six species in four sections of the genus, and is presumed to be ancestral. Wide variation was found in the sexually reproducing species U. glabra in contrast to the relatively invariant zymograms of the mainly vegetatively reproducing U. minor.