Table 1. Disease rating (symptom rating) scale for evaluation of cotton leaf curl virus disease.

Disease index (%)	Severity grade	Symptoms	Remarks
0	0	No Symptoms	Resistant
1–20	1	Thickening of only secondary and tertiary veins.	Highly tolerant
21–30	2	Thickening of secondary and primary (mid rib) veins.	Tolerant
31–50	3	Vein thickening (V.T), leaf curling (L.C) or enation (E) or both.	Susceptible
>50	4	Stunting along with vein thickening leaf curling/enation.	Highly susceptible