Fig. 3
From: Alleviation of iron deficiency in pear by ammonium nitrate and nitric oxide
Effects of exogenous NH4NO3 and NO on the root phenotype of pear under iron deficiency stress. A Root phenotype of pear treated with NH4NO3 and NO. B Effects of exogenous NH4NO3 and NO on root length, root surface area, root average diameter, and total root tip number under iron deficiency. The data are expressed as the mean ± SD (n = 3). Different letters indicate significant differences at P < 0.05 (LSD test)