Adaptive potential of varrieties of Korean chrysanthemums of Botanical Garden-Institute Ufa scientific centre of RAS selection in the conditions of continental climate of ob forest-steppe region

The results of a six-year study of biological features and ornamental qualities of 10 varieties of Korean chrysanthe- mums, created in Botanical Garden-Institute of the UNC RAS, in Ob forest-steppe region are presented. For the varieties Atysh, Afarin, Volny Agideli, Guzel, Director Shigapov, Zagir Ismagilov, Karaidel, Leysan, Polyanka, Radik Gareev the comparison of their phenorhythms and morphology in conti- nental and moderately continental climate are given. It is re- vealed that in the conditions of Ob forest-steppe region ex- treme beginning of wintering, when in first-second decade of November there are minimum temperatures below -20 °C for several days, leading to significant loss of most varieties. In this regard, mother plants of varieties are recommended to be kept in greenhouses. Such varieties as Guzel, Director Shigapov, Karaidel, Polyanka and control variety Isabel had winter hardiness at the level of 85-100 % during all years of the research, except extreme wintering with a sharp decrease in air temperature in November which caused the decrease of winter hardiness up to 40 %...