Abstract
The review describes the successive stages of work on the production of virus-free apple planting stocks using biotechnology methods. Compositions of nutrient media, duration and temperature regime of plant material treatment, and other details for all stages of cryopreservation (cryotherapy), chemotherapy, detection of viruses are presented, methods of in vitro initiation, micropropagation, in vitro rooting and adaptation of plant material to the soil substrate are discussed. Virus-free collection of Malus domestica Borkh. and M. sieversii Ledeb. M. Roem. is preserved by in vitro culture and cold storage (+4 °C). Cryopreservation of shoot tips of apple historic cultivars and wild forms in liquid nitrogen at -196° will preserve this valuable material for a long time and, if necessary, can be used in breeding. Virus-free apple rootstocks and cultivars will be available to provide planting material of a super-elite class for local nurseries and in general will promote the development of the domestic nursery.
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