Author(s)

Dimitris L. Bouranis, Alexandros Dionias, Styliani N. Chorianopoulou, Georgios Liakopoulos, Dimosthenis Nikolopoulos

Plant Physiology Laboratory, Department of Crop Science, Agricultural University of Athens, Athens, Greece.

Seven-day-old maize (Zea mays) plants were grown hydroponically for ten days in N-deprived nutrient solution. The distribution profiles according to the position on the stem of the –N laminas stomatal conductance, transpiration rate, photosynthetic rate (1st-group) were monitored, along with the corresponding profiles of dry mass, water amount, water content, length, surface area, and specific surface area (2nd-group), relative to control. In the uppermost –N laminas, the changes within a parameter of the 1st-group were significantly higher and of the 2nd-group significantly lower than the control, respectively. Correlations of the corresponding values among the parameters of the 1st-or 2nd-group were linear. The parameters between groups correlated non-linearly. Transpiration rate was divided by the lamina’s dry mass correlated with surface area in a power-type function. The slopes of the response ratios linear relations between the various pairs of parameters could be used for simulation of a lamina’s response to the deprivation.

N-Deprivation; Hydroponics; Zea mays; Stomatal Conductance; Transpiration Rate; Photosynthetic Rate; Response Ratios

Bouranis, D. , Dionias, A. , Chorianopoulou, S. , Liakopoulos, G. and Nikolopoulos, D. (2014) Distribution Profiles and Interrelations of Stomatal Conductance, Transpiration Rate and Water Dynamics in Young Maize Laminas under Nitrogen Deprivation. American Journal of Plant Sciences, 5, 659-670. doi: 10.4236/ajps.2014.55080.