RESULTS OF PROPAGATION WITH LEAF CUTTINGS OF SAINTPAULIA IONANTHA

ISHS Acta Horticulturae 64: Symposium on Production of Potted Plants and Cut Flowers

RESULTS OF PROPAGATION WITH LEAF CUTTINGS OF SAINTPAULIA IONANTHA

Author:

W.U.v. Hentig

Abstract:
Past results with Saintpaulia ionantha Wendl. showed, that a special age of mother plants and a special stage of development of the leaf cuttings are profitable for propagation. This was confirmed again. Later it was shown, that there is a relation between the length of petiole of leaf cuttings and the formation of adventitious shoots.

There are three important statements:

The most favourable age of mother plants for the propagation by leaf cuttings is between the fifth and tenth month of growth. The best results are in the first third of this time.
Propagating leaves of the middle leaf zone of the plants and those of the upper (youngest) leaf zone showed adventitious shoots earlier than the leaves of the lowest (eldest) zone. With increasing age of mother plants differences became greater.
Also the length of the petioles of leaf cuttings has an influence on the time of formation of adventitious shoots. Therefore number, size and weight of formed adventitious shoots depend on it. Shorter lengthes of petioles gave best results. An attempt to determine the reason for this will be made.

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