PEROXIDASE ACTIVITY IN LINUM USITATISSIMUM L

Peroxidase activity was measured at three stages, from seedling to maturity, in stem tissue of two genotypes of Linum usitatissimum, and their reciprocal F1 hybrids. The plants were grown throughout in growth chambers, allowing close control over the environmental conditions. There were large and consistent differences between the activities of the parental genotypes, and between dialysed and undialysed extracts. Activities in both parents and the F1 were expressed on a logarithmic scale. The activity of the F1 fell, with one exception, between the activities of the two parents. The relationship of F1 activity to the mean of the parental activities fluctuated with the stage of growth. © 1969 OXFORD UNIVERSITY PRESS.