The study of the method of culture in vitro as a method of vegetative propagation of coniferous trees

Abstract

Research is aimed at improving the technology of vegetative propagation of coniferous trees in vitro by selecting optimal media for sterilizing the explants of vegetative parts of plants, and using growth regulators to obtain callus and stimulating the root formation of test-tube plants. The objects of study are the vegetative parts of conifers: the buds and parts of the annual shoots. Plant objects sterilized and planted on nutrient media of different composition according to the scheme of experiments. Laboratory studies were conducted, on the basis of which successful use of sodium hypochlorite was noted compared with other reagents for sterilization of explants. According to the results of the experiments, a Woody Plant Medium nutrient medium was identified which promotes the best survival of the explants of conifers. The effect on growth survival of explants and their viability in culture in vitro, growth regulators such as 2.4-dichlorophenoxyacetic acid and 2.4-dinitrophenol in nutrient media was also determined. With the further cultivation and reproduction of coniferous plants, this technique allows to obtain planting material that most economically preserved in the offspring the economically valuable traits and properties of the parent plant.