Relation Between Electrical Impedance Spectroscopy Parameters and Frost Hardiness in Shoots of Apple Rootstocks Relation Between Electrical Impedance Spectroscopy Parameters and Frost Hardiness in Shoots of Apple Rootstocks Relation between frost hardiness and parameters of electrical impedance spectroscopy in saplings of different development stage of Pinus sylvestris L. var. mongolica Litv. THE DISTRIBUTION OF DIELECTRIC RELAXATION TIME OF THE WOOD-ADSORPTIVE WATER SYSTEM Relation between Electrical Impedance Spectroscopy Parameters and Frost Hardiness in Stems and Needles of Pinus bungeana