Fig. 1From: Improved chromium tolerance of Medicago sativa by plant growth-promoting rhizobacteria (PGPR)Effect of inoculation with NT19, NT15, NT20, and NT27 on the dry weight of the shoot (A) and root (B) of M. sativa in the absence (−Cr (VI)) and the presence of Cr (VI)(+ Cr(VI)). Values are means ± SE; values with different letters are significantly different (p < 0.05)Back to article page