THE PHYSIOLOGICAL DISORDERS OF SOUR CHERRY CULTURES: NECROSIS AND VITRIFICATION
Schattenmorelle and North Star cultures showed distinct symptoms of vitrification. For both cultivars, content of dry matter was evidently higher in healthy (H) leaves than in vitreous (V) ones. However, the metabolic activity of H leaves in comparison to V leaves was different in both cvs. For example, content of chlorophyll in H and V leaves was the same for Sch., but V leaves of NS contained more chlorophyll than H leaves.