Southern Blight (Sclerotium rolfsii Sacc.) of Cowpea: Genetic Characterization of Two Sources of Resistance

Table 3

Segregation for resistance to southern blight (Sclerotium rolfsii) in parental, F₁, and F₂ populations of the cross “Carolina Cream” x “Brown Crowder” (Allelism study).

Population	Numberofresistantplants^a	Numberofsusceptibleplants^b	Total number of plants	Frequency of susceptible plants (%)
Carolina Cream (P1)	57	1	58	1.7
Brown Crowder (P2)	52	4	56	7.2
F1	61	15	76	19.7
F2	201	34	235	14.5

^aResistant plant (stem lesion score ≤2).
^bSusceptible plant (stem lesion score ≥3).