A comparison of the peroxidase isozymes of wheat plants grown at 6 °C and 20 °C

The peroxidase isozymes from the first leaf of seven varieties of wheat of different levels of cold hardiness have been studied by agar gel electrophoresis. The plants were grown under controlled conditions at 6 °C or 20 °C. The isozyme pattern changes during ontogeny. The intensity of staining of the fastest moving "anionic" band is much greater in the leaves of the common wheats grown at 6 °C than in similar leaves from plants grown at 20 °C. This increase in peroxidase is apparently not associated with cold hardiness.