Table 2. Correlation between stress responses and antioxidative mechanism of Japanese mint grown under an individual macro- and micronutrient deficiency at 60 days after transplanting.
| Stress responses | ||||||
|---|---|---|---|---|---|---|
| Antioxidative responses | Electrolyte leakage | SPAD chlorophyll reading | ||||
| Macronutrients | ||||||
| - N | - P | - K | - N | - P | - K | |
| TPC | r = − 0.334 | r = − 0.327 | r = − 0.876 | r = 0.629 | r = 0.854 | r = − 0.401 |
| TFC | r = − 0.613 | r = − 0.191 | r = − 0.315 | r = 0.315 | r = − 1.000* | r = − 0.894 |
| DPPH | r = 0.645 | r = 0.463 | r = − 0.117 | r = − 0.354 | r = 0.904 | r = − 1.000* |
| ABTS | r = 0.989 | r = − 0.633 | r = 0.491 | r = − 0.885 | r = 0.622 | r = 0.823 |
| Micronutrients | ||||||
| - Fe | - Mn | - Cu | - Fe | - Mn | - Cu | |
| TPC | r = − 0.969 | r = − 0.828 | r = 0.519 | r = − 0.624 | r = − 0.369 | r = − 0.969 |
| TFC | r = 0.673 | r = − 0.934 | r = 0.995 | r = − 0.399 | r = − 0.570 | r = − 0.641 |
| DPPH | r = − 0.993 | r = 0.991 | r = 0.877 | r = − 0.299 | r = 0.743 | r = − 0.963 |
| ABTS | r = − 0.999* | r = − 0.674 | r = 0.098 | r = 0.446 | r = − 0.973 | r = − 0.767 |
Notes.
r, correlation coefficient
*
significant correlation at the 0.05 level.
- TPC
- total phenolic content
- TFC
- total flavonoid content
- DPPH
- 2, 2-diphenyl-1-picrylhydrazyl radical scavenging activity
- ABTS
- 2, 2′-azino-bis-(3-ethylbenzothiazoline-6-sulfonate) radical cation scavenging activity