THE INFLUENCE OF MOTOR-CAR EXHAUST ON THE CONTENT OF NON-STRUCTURAL CARBOHYDRATES IN STEM APICES, FLORAL MERISTEMS AND APICAL BUDS OF TAGETES PATULA L. AND CALENDULA OFFIC1NALES L

摘要

It has been shown that the decrease in flowering of Tagetes patula L. and Calendula officinales L. under conditions of environmental pollution due to motor-car exhaust fumes results in a reduction of non-structural carbohydrates in stem apices, floral meristems and apical buds. This might be one of the reasons for reduced flowering intensity. A comparison of the results showed that the negative effect of pollutants on non-structural carbohydrates in generative organs was greater in Calendula officinales L than in Tagetes patula L.