. 2022 Dec 10;8(12):e12217. doi: 10.1016/j.heliyon.2022.e12217

Table 3.

Disease severity key for MRRD disease of cowpea.

Disease scale	Interpretation	Resistance rating
1	No visible symptoms on plants.	Highly resistant (HR)
3	Lesions are limited to cotyledonary tissue or hypocotyl.	Resistant (R)
5	Lesions have progressed from cotyledons to about 2 cm of stem tissues.	Tolerant (T)
7	Lesions are extensive on stem and branches.	Susceptible (S)
9	Most of the stem and growing points are affected by the development of sclerotia.	Highly susceptible (HS)