Table 5.

The seasonal mean monomer/dimer and seed and skin tannin concentration and content in 2010/2011 and 2011/2012.

Treatment	Monomer and dimer seed concentrations (mg/g seed)	Monomer and dimer seed contents (mg/berry)	Total seed tannin concentration (mg/g seed)	Total seed tannin content (mg/berry)	Monomer and dimer skin concentrations (mg/g skin)	Monomer and dimer skin contents (mg/berry)	Total skin tannin concentration (mg/g skin)	Total skin tannin content (mg/berry)
2010/2011
Standard (control)	5.89	0.33	44.61 a	2.20	0.093 a	6.67 a	0.010 a	0.668 a
Leaf removal west	4.93	0.26	43.26 a	2.02	0.065 b	7.06 a	0.006 b	0.693 a
STD-UV-B	4.88	0.27	39.96 ab	1.96	0.039 c	6.54 a	0.003 c	0.634 a
LRW-UV-B	5.37	0.28	37.58 b	1.75	0.065 b	4.78 b	0.006 b	0.448 b
Significance	ns	ns	*	ns	***	*	***	*
2011/2012
Standard (control)	5.41 a	0.30 a	44.88 a	2.40	0.090 ab	5.591	0.010 a	0.509 b
Leaf removal west	0.34 c	0.29 a	42.22 a	2.36	0.116 a	6.372	0.010 a	0.588 a
LR (-UV-B, 2xOp50)	0.09 c	0.01 b	42.80 a	2.31	0.086 b	6.117	0.007 ab	0.566 ab
LR(-UV-B, 2xUHI)	2.94 b	0.25 a	25.88 b	2.24	0.068 b	6.237	0.005 b	0.533 ab
Significance	***	***	***	ns	*	ns	*	*

Each value represents the mean of five replicates at eight sampling dates in 2010/2011 and five replicates at 10 sampling dates in 2011/2012. Means in columns followed by a different letter are significantly different within one season. Monomers: C, (+)-catechin; EC, (−)-epicatechin; ECG, (−)-epicatechin-3-O-gallate. Dimers: B1, Ec-(4β-8-)Cat; B2, Ec-(4β-8-Ec. Treatments: STD (shaded/control); LRW (leaf removal west); STD with decreased UV-B radiation (STD-UV-B); LRW with decreased UV-B radiation (LRW-UV-B); LR (-UV-B, -PAR) (leaf removal with decreased UV-B radiation and 2xOp50 UV sheets added on both sides of the bunch zone); LR (-UV-B, 2xUHI) (leaf removal with decreased UV-B radiation and 2xUHI UV sheets added on both sides of the bunch zone). Different letters indicate significant differences at p ≤ 0.05, 0.01, and 0.001, respectively; ns, not significant.