Fig.3From: Biochemical response and nutrient uptake of two arbuscular mycorrhiza-inoculated chamomile varieties under different osmotic stressesInteraction effect of osmotic stress (control, − 0.4, and − 0.8 MPa) × arbuscular mycorrhiza (AM) × variety and on proline a and total soluble sugar b content of chamomile. Means within a column followed by the different letter are significantly different at P ≤ 0.05. Standard error of the mean of total soluble sugar (n = 6) and proline (n = 4)Back to article page