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ISHS Acta Horticulturae 275: International Symposium on the Culture of Subtropical and Tropical Fruits and Crops

RAPID VEGETATIVE PROPAGATION OF PAPAYA PLANTS BY CUTTINGS

Authors:   O. Reuveni, D.R. Shlesinger
Abstract:
Means of increasing initial propagules from selected papaya plants are described. A combined treatment of 6-benzylaminopurine (BA, 500 mg/l) and gibberellic acid (GA, 1000 mg/l) in a lanolin paste, or three sprays with BA (500 mg/l) and GA (100 mg/l) effectively released axillary buds along the stem from apical dominance.

The many shoots obtained can be rooted under intermittent mist or serve as a source of explants for in vitro propagation. Plants obtained from rooted cuttings were grown in a greenhouse to serve as stock plants for cuttings. By cutting back and hedging of the stock plants, many shoots with small leaves and thin (8 to 12 mm) stems were produced.

Semi-hardwood cuttings of three selected clones rooted well (85 to 100%) after 3 weeks under mist. The base of the cuttings was dipped in talcum powder containing 1% benomyl (Benlate) and 1% potassium salt of indole-3-butyric acid. An aerated medium and bottom heat of 30°C were optimal.

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