Table 1 Grading criteria for drought damage survey of G. sinensis leaves.
Grade | Drought symptoms |
|---|---|
0 | No obvious drought stress symptoms |
1 | Lightly affected, few leaves wilt and turn yellow |
2 | Moderate damage, about 1/2 of the leaves turning yellow and drying out |
3 | Severe damage, total leaf yellowing, massive defoliation |
