Under solution culture conditions, the effect of nitrogen and phosphorus-deficiency on maize(Zea mays L.)root hydraulic conductivity were studied both at the level of individual root and whole roots system using pressure chamber. The results showed that the hydraulic conductivity of roots different with genotype and nutrition condition(Fig.1), which were observed not only at individual root level, but also at whole root system level. Results of inhibition experiment with HgCl 2 and de-inhibition experimen...
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