DEGREE OF SPECIES WINTER HARDINESS LILAC IN ORENBURG PREDURALJA CLIMATIC AND GEOGRAPHICAL CONDITIONS
A major component of the adaptive capacity of the plant is winter hardiness. The degree of realization of the potential hardiness depends on the progress of meteorological conditions in the preparation of plants to winter, in winter and during the transition to the growing season. Are strongly influenced by the conditions of the previous growing season, and autumn, pests and diseases that contribute to the overall condition of the plants on the eve of a period of rest. In connection with this assessment hardiness lilac species of great scientific and practical interest. The results of the investigations have revealed differences in the degree of stability of different types of lilacs taxonomic origin to the low temperatures in the conditions of the Orenburg Ural region. The kinds of high, medium and low resistance to low temperatures.