Table 2.

Statistical P values for the comparison of slopes (in parentheses) and estimates of the intercepts (in parentheses) for the amount of MGDG^a or DGDG regressed against harvest time for wheat cultivars resistant and susceptible to tan spot (lines shown in Figs. 2 and 3).

MGDG
Comparison of slopes	S-b (-2.37)	R+ (-1.91)	S+ (-8.61)
R- (-2.39)	0.9896	0.8112	0.0025
S- (-2.37)	-	0.8227	0.0025
R+ (-1.91)	-	-	0.0011
Comparison of interceptsc
R- vs. S- (96.5 vs. 87.3)	0.0482	-	-
R+ vs. R- (85.4 vs. 96.5)	0.0172	-	-
R+ vs. S- (85.4 vs. 87.3)	0.6890	-	-
DGDG
Comparison of slopes	S- (-1.01)	R+ (-1.70)	S+ (-5.02)
R- (-1.25)	0.7771	0.5996	<0.0001
S- (-1.01)	-	0.4215	<0.0001
R+ (-1.70)	-	-	0.0001
Comparison of interceptsc
R- vs. S- (54.7 vs. 49.9)	0.0127	-	-
R+ vs. R- (49.5 vs. 54.7)	0.0064	-	-
R+ vs. S- (49.5 vs. 49.9)	0.8212	-	-

^aAbbreviations: MGDG = monogalactosyldiacylglycerol; and DGDG = digalactosyldiacylglycerol.

^bR- = wheat cultivars resistant to tan spot without inoculation; S- = susceptible cultivars without inoculation; R+ = resistant cultivars with inoculation; and S+ = susceptible cultivars with inoculation. Slopes (normalized signal/mg/day) and estimates of the intercepts are shown in parentheses.

^cThe estimates of the intercepts were only compared for those pairings where the slopes of the lines were not significantly different.