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

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.

Parameter	Tissue	n	Median	Mean Rank	Sum of Ranks	U	Z	P
M_o	Mesophyll	12	1.335	17.08	205	127	3.1493	0.0016
M_o	Vein	12	1.11	7.92	95	127	3.1493	0.0016
Φ_Po	Mesophyll	12	0.6461	8.58	103	25	−2.68468	0.0073
Φ_Po	Vein	12	0.70785	16.42	197	25	−2.68468	0.0073
Ψ_ET2o	Mesophyll	12	0.4288	8.83	106	28	−2.51147	0.012
Ψ_ET2o	Vein	12	0.51325	16.17	194	28	−2.51147	0.012