Table 7. Differences in Photosynthetic Parameters between Mesophyll and Veins with Zn-deficient treatment

These differences were in response to zinc deficiency stress in soybean leaves (20-nm residue from chemicals and water) compared to Control (340 nm Zn) for six weeks. Three areas of mesophyll and three veins were chosen from every leaf for quantification (n = 4–6 leaves per treatment). Mann-Whitney U test statistics were used for significant differences. The Z value represents standardized value corrected for the presence of ties.

ParameterTissuenMedianMean RankSum of RanksUZP
MoMesophyll121.33517.082051273.14930.0016
Vein121.117.9295
ΦPoMesophyll120.64618.5810325−2.684680.0073
Vein120.7078516.42197
ΨET2oMesophyll120.42888.8310628−2.511470.012
Vein120.5132516.17194