Table 3. Description of infection types and codes used (adapted from Levine & Cherewick 1952).
Infection
Type |
Host
Response |
Symptoms |
|
|
|
0 |
Immune |
No vivible
uredia |
0; |
Very
resistant |
Hypersensitive
flecks |
1 |
Resistant |
Small
uredia with necrosis |
2 |
Moderately resistant |
Small to
medium sized uredia with green islands and surrounded by necrosis or chlorosis |
3 |
Moderately susceptible |
Medium
sized uredia with or without chlorosis |
4 |
Susceptible |
Large
uredia without chlorosis |
|
|
|