1Department of Plant Breeding, Faculty of Agriculture and Natural Resources, Islamic Azad University, Science and Research Branch, Tehran, Iran
2Department of Horticultural Sciences, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran
3Department of Horticultural Sciences, Seed and Plant Improvement Institute, Karaj, Iran
4Department of Horticultural Sciences, Faculty of Agriculture and Natural Resources, Islamic Azad University, Science and Research Branch, Tehran, Iran
Objective: In vitro propagation of AZ x M9 new apple rootstock resulted of breeding program of vegetative apple rootstock in Iran was investigated. Methods: Nodal explants were inoculated in Murashige and SKoog (MS) medium supplemented with various concentrations of 6-benzylaminon purine (BAP) (0.4, 0.8 and 1.2 mg/l) alone or with naphthalene acetic acid (NAA) (0.1 mg/l). We examined the effect of different concentrations of iron sequestrene (Fe-EDDHA) and thiamin vitamin in ½ MS and Linsmaier and Skoog (LS) media supplemented with indol-3-butric acid (IBA) (1 mg/l) on rooting of attained plantlets. Results: According to our results, 0.4 BAP + 0.1 NAA treatment in MS medium was the best component which resulted in the highest proliferation rate (6.73). As well, we estimated the highest root number in ½ MS + 0.15 g/l Fe-EDDHA + 2.4 g/l thiamin.