Serzhuk O. Working out of methods to create parent material for hawthorn (Crataegus L.) breeding

Subject of research - the regularities of recurrence of regeneration ability in vivo and in vitro of hawthorn species and varieties for the new parent material development for breeding.The aim - to devise the methods of parent material development on the basis of breeding process technology improvement and briding new methods of accelerated hawthorn reproduction. The methods of research are field, laboratory, statistic. The evaluation of hawthorn species are varieties according to economic characters is given, the modes and methods of parent material development in howthorn breeding in that number with the use of biotechnological link for the accelerated reproduction in vitro of genotipes with economic characters for following their including in the breeding process are improved. The breeding numbers of different hawthorn specied selected in the experimets are the basis for new variety development with high crop yield and fruit quality.The introduction - the research results are used in breeding and educational programmes of the National Dendropark "Sophiyivka", Uman National Agrarian University, Pavlo Tychina Uman State Pedagogical University, Institute of Root Crop. The field of application - the breeding research institutions, the agricultural production.