Table 1.

Disease severity rating scale for internal symptoms present in rhizome of banana plants caused by Fusarium oxysporum f.sp. cubense (Carlier et al., 2003).

Rating	Description of symptom
1	Clean rhizome with no evidence of vascular discoloration
2	Isolated points of vascular discoloration
3	Up to 33% of vascular tissue exhibiting discoloration
4	Between 33 and 66% of the vascular tissue discolored
5	Greater than 66% of the vascular tissue discolored
6	Total discoloration of vascular tissue