Table 1.

Sequential Inoculation Treatments of Microbotryum species on Silene vulgaris.

		First Inoculation (Resident Infection)
		M. sil-1	M. lag-1	Water
Second Inoculation (Challenge Infection)	M. sil-1		24 (27)	7 (7)
	M. sil-2	39 (39)	*	36 (36)
	M. lag-1	39 (39)		34 (35)
	M. lag-2	30 (31)	26 (31)	23 (29)
	Water	8 (8)	24 (30)

Number of diseased plants per treatment, with total number of flowering plants in brackets. It was among the diseased plants that the pathogen genotype was determined. Columns represent the genotype infected first ("resident infection"), and rows represent the genotype infected second ("challenge infection"). "M. sil" = Microbotryum silenes-inflatae, "M. lag" = Microbotryum lagerheimii. Two distinct genotypes of each species were used ("1" or "2"), with the genotype used as the resident infection designated as "1" throughout. The treatment designated by * (M. lagerheimii-1 then M. silenes-inflatae-2) only had one plant survive to the flowering stage, and was dropped from subsequent analyses.