. 2018 Dec 18;179(2):369–381. doi: 10.1104/pp.18.00953

Table 8. Differences in Photosynthetic Parameters between Mesophyll and Veins with Zn-replete 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.

Parameter	Tissue	n	Median	Mean Rank	Sum of Ranks	U	Z	P
M_o	Mesophyll	18	1.1	19.72222	355	184	0.68389	0.49404
M_o	Vein	18	1.06	17.27778	311	184	0.68389	0.49404
Φ_po	Mesophyll	18	0.7678	18.16667	327	156	−0.17401	0.86
Φ_po	Vein	18	0.76785	18.83333	339	156	−0.17401	0.86
Ψ_ET2o	Mesophyll	18	0.4863	17.83333	321	150	−0.36387	0.72
Ψ_ET2o	Vein	18	0.48695	19.16667	345	150	−0.36387	0.72