Fig. 4.

Fresh mass of tissue and rosmarinic acid (RA) content in tumours induced with Agrobacterium tumefaciens strain A281 (T1) and A. tumefaciens strain B6S3 (T2), hairy roots (HR1) induced with Agrobacterium rhizogenes A4 and normal roots (NR3). Tissues were cultured on solid (s) or in liquid (lq) medium on an orbital shaker (80 rpm). Values represent the mean of 8 measurements (2 independent experiments)±S.D. Cultivation on solid or in liquid medium did not induce significant differences in growth or RA production in the investigated tissues (t--test, p≤0.05)