Diagnosis. Here is an outline presented as an overview of wilt diagnosis for ginger. More information is included on the linked pages below.
1. Signs
- bacterial ooze from infected tissues
- bacterial streaming from infected tissues
2. Symptoms
3. Serological tests
4. DNA tests
5. Bioassay
6. Testing services
Comparison of various testing methods for diagnosis of bacterial wilt of edible ginger:
Diagnostic
method |
Time
required |
Reliability |
Cost |
Signs |
Minutes |
High |
Low |
Symptoms |
Minutes |
Low |
Low |
Serological tests |
Minutes |
High |
Moderate |
DNA tests |
Hours |
High |
High (equipment, skill) |
Bioassay |
Days |
Moderate |
Moderate (pots, medium, |
Testing services |
Days |
High |
Moderate |
Pathogen detection. The bacterial wilt pathogen can be detected using a number of different laboratory methods and from several different sources:
1. Soil
2. Water
3. Infected plant tissue
Video: Detection of Ralstonia solanacearum race 4 using PCR (Polymerase Chain Reaction)