Table 3.

Multiple linear regression with groups for year of FHB related species on thousand grain weight (TGW) (g) and specific weight (SW) (kg/hl) in UK malting barley samples collected from 2007 to 2011 with sufficient grain numbers available for analysis. Regression of TGW on DNA of M. majus, M. nivale and F. avenaceum was significant and fitted separate, non-parallel lines for each individual year. Regression of SW on DNA of F. avenaceum and F. graminearum fitted separate but parallel lines for each year.

Year	Equation
	TGW (g)	SW (kg/hl)
2007	y = 32.25 + 2.10 logFa − 12.8 logMn + 11.0 log Mm	y = 57.79 − 1.172 logFa − 0.892 logFg
2008	y = 42.24 − 2.44 logFa − 3.97 logMn + 6.05 log Mm	y = 62.17 − 1.172 logFa − 0.892 logFg
2009	y = 47.13 + 0.46 logFa − 1.94 logMn − 1.68 log Mm	y = 61.83 − 1.172 logFa − 0.892 logFg
2010	y = 47.49 − 1.98 logFa + 2.76 logMn − 0.77 log Mm	y = 63.60 − 1.172 logFa − 0.892 logFg
2011	y = 38.39 − 2.54 logFa + 2.70 logMn − 3.38 log Mm	y = 62.77 − 1.172 logFa − 0.892 logFg
	d.f. = 177, R2 = 0.40, P < 0.001	d.f. = 64, R2 = 0.48, P < 0.001