The Symptom and Genetic Diversity of Cassava Brown Streak Viruses Infecting Cassava in East Africa

Table 5

Mean symptom severity scores for each CBSD isolate on different cassava varieties (on a 0–5 scale using the procedure of [9]).

Cassava variety	Mean symptom severity scores for each virus isolate						Mean symptom severity^1
	CBSUV-			CBSV-
	[UG:Kab4-3:07]	[KE:Mwa16-2:08]	[TZ:Kib10-2:03]	[TZ:Zan6-2:08]	[MZ:Nam1-1:07]	[TZ:Nal3-1:07]
Albert	1.9	2.9	2.2	2.8	4.0	3.9	3.0
Kiroba	1.9	2.0	2.0	2.4	3.0	2.7	2.3
Ebwanateraka	1.9	2.6	2.1	2.8	4.0	4.0	3.0
Colombian	1.9	2.9	2.1	2.9	4.0	4.0	3.0
TMS 60444	2.1	2.9	2.7	3.1	4.0	4.0	3.1
Mean symptom severity^2	1.9	2.7	2.2	3.0	3.8	3.7	2.8

¹Mean symptom severity for each variety.
²Mean symptom severity for each virus isolate.