Stability of development and dynamics of vitamin C content in the leaves of the berry apple tree in the conditions of technogenic pollution of the city of Novoaltaysk

Abstract

The article considers the stability of the development of the berry apple tree in different growing conditions in Novoaltaysk. The fluctuating asymmetry of apple leaves was evaluated by 5 morphological features. We revealed a significant increase in comparison with the control of the leaf width, the length of the second second-order vein from the base of the leaf, the distance between the bases of the first and second second-order veins and the distance between the ends of the first and second second-order veins in apple leaves growing along highways and near industrial enterprises. There are 3 zones that differ in the integral indicator of the stability of the development of leaves in apple trees: conditionally normal (control), with an average degree of disturbance and critical. A regular change in the vitamin C content in the leaves of apple trees in a row is described: control -> courtyards, parks, squares -> roads with medium traffic intensity -> roads with high traffic intensity -> industrial zone.