Peroxidase isoenzymes in Linum.

Isoenzymes of peroxidase were separated on acrylamide gels in 2 genotypes of Linum usitatissimum L. and their F 1, F 2 and first backcross progeny. Active extracts were obtained from homogenates of main stem tissue; activity was measured both before and after electrophoretic separation. The relationship of isoenzyme activity to gross (prior to electrophoretic separation) activity was investigated, as well as the relative behaviour of isoenzyme activity in the various genotypes and generations. Gross activity was correlated with isoenzyme activity; there was also evidence of maternal as well as genetic effects on isoenzyme activity.