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. 2015 Nov 19;6:1007. doi: 10.3389/fpls.2015.01007

FIGURE 1.

FIGURE 1

Morphological effect of urea and NBPT on the shoot and root systems of maize plants. Five-day-old maize plants were grown hydroponically for 7 days in a nutrient solution supplied with 0.5 mM urea in presence or absence of 0.897 μM NBPT (Urea + NBPT treatment or Urea treatment, respectively) or exposed to a N-free nutrient solution, with or without NBPT (Control + NBPT treatment or Control treatment, respectively). For each treatment, a picture of two representative shoots and a picture of a root system are shown.