Effect of total and local heat shock on shoots and roots the mass ratio of ipt-transgenic and untransformed tobacco plants

The effect of heating (up to 40°C) the entire plant or just roots on the content of cytokinins and growth of untransformed and transgenic tobacco plants in which the ipt-gene responsible for synthesis of cytokinin, was induced by heat shock. There is a parallelism in the changes of the content of cytokinins in the 5th and 6th leaf and shoot fresh weight of plants of both genotypes under total heat shock. Correlation between the changes in the content of cytokinins in roots and their fresh weight could not be detected.