Table 5 The investigation of Leaf Wither Degree under the cold stress conditions
Degree | LWD (Leaf Wither Degree) | Cold-tolerance Capacity |
|---|---|---|
1 | Normal leaf | Very strong |
3 | 1/4 of total leaf area to wither | Strong |
5 | 1/4–1/2 of total leaf area to wither | Middle strong |
7 | Greater than 2/3 of total leaf area to wither | Weak |
9 | Total plants wither | Very weak |