Document Type : Research Paper
Authors
1 Assistant Professor, Department of Horticulture, Seed and Plant Improvement Institute, Karaj, Iran.
2 Researcher, Department of Horticulture, Seed and Plant Improvement Institute, Karaj, Iran
3 Researcher, Department of Horticulture, Seed and Plant Improvement Institute, Karaj, Iran.
Abstract
Using apple clonal rootstocks is necessary for improving crop efficiency in apple orchards. After grafting
of apple cultivars on malling rootstocks, the extra parts of the rootstock was used as stem cuttings. Apical,
middle and basal parts of these shoots were used as cuttings. Two propagation conditions, greenhouse and
nursery and three concentrations of Indole-3- Butyric acid (IBA) on rooting, callus production, root
number and root length of two apple rootstocks (MM106, MM111). Some cuttings were placed upside
down. The results showed that there were significant differences among the different treatments of
cultural system, cutting position, type of rootstock and IBA concentration. The percentage of rooting in
nursery propagation system with inverted cuttings (28.77%) have significant difference with greenhouse
system (22.19%) and MM106 with 38.82% rooting had a significant difference to MM111 with 12.4%
rooting. The highest rooting percentage (38.82%) was obtained at 2500 mg/l of IBA.
Keywords
)