Table 1 The identification standard of Verticillium wilt resistance of cotton
From: QTL mapping associated with Verticillium wilt resistance in cotton based on MAGIC population
Incidence level | Symptom description |
|---|---|
Level 0 | Healthy, disease-free leaves |
Level 1 | Part of 1–2 cotyledons or the entire leaf turns yellow and soft, but the true leaves show no symptoms |
Level 2 | Cotyledons and one true leaf showed symptoms |
Level 3 | Two true leaves showed symptoms |
Level 4 | All leaves show symptoms. In severe cases, the leaves fall off or the top center dies |