Effects of applied auxin, gibberellin and cytokinin on the activity of peroxidases in the peduncles of rose flowers
1992
Zieslin, N. | Ben-Zaken, R.
The activity of peroxidases in the proximal part of the flower peduncle of rose cv. Nubia was promoted by exogenous application of auxin but not by gibberellin or cytokinin. In cv. Mercedes the activity was promoted also by gibberellin and cytokinin. In the distal parts of the peduncles of both cultivars, peroxidase activity was not affected by any of the applied growth regulators. In young flowers of cv. Nubia the protein content of the peduncles was affected only by cytokinin, and in aged flowers only by auxin, while in "Mercedes" peduncles the content of protein was not affected by any of the applied growth regulators. The specific activity of peroxidases was promoted by auxin in peduncles of Nubia and by both auxin and cytokinin in peduncles of "Mercedes" flowers.
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