Cutting propagation of an old Italian genepool of evergreen azaleas
2010
Scariot, V. | Merlo, F. | Larcher, F.
Cuttings of evergreen azaleas were collected from 73 old mother plants, present in historical parks and gardens in Northern Italy, in July 2003. The apical cuttings, 4-10 cm long, were selected on the base of their degree of lignification, with 4-7 leaves. The cuttings were treated with an antibacterial solution (ossichinoline 5 g L-1) and planted in perlite + peat (1:1) substrate. No treatments with growth regulators were applied. Rooting was performed in a greenhouse with basal temperature of 20°C. Air humidity was kept constant (80-85%) by nebulisation. Cultivation lasted 2 years, according to the usual practice. Percentage of rooted cuttings, and quality and dry weight of roots were recorded in order to evaluate rooting aptitude. Rooting percentage ranged between 34% and 95%. Cluster analysis separated the cultivars in five main groups based on root quality. At present, the propagated plants are kept in catalogue fields.
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