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. 2012 Feb 29;63(8):3071–3082. doi: 10.1093/jxb/ers027

Table 2.

Pearson product moment correlations between the average chemical composition [lipids, LIP; lignin, LIG; total soluble phenols, PHE; protein, PRO; cellulose, CEL; hemicellulose, HCE; starch, STA; total soluble sugars, TSS; organic acids, OA; minerals, MIN; amino acids, AA; total methylxanthine alkaloids, ALK; nitrogen, N; carbon, C; heat of combustion, Hc; leaf construction costs determined according to Williams et al. (1987), CCW; leaf construction costs determined according to Poorter (1994), CCP; total maintenance costs, MC; mass–based net carbon assimilation rate, Am; mass–based respiration rate, Rm; carbon isotope composition ratio, δ13C; payback times, PBT; specific leaf area, SLA; and relative growth rate, RGR] of coffee plants grown under contrasting light and water conditions; n=40; *P ≤0.05, **P ≤0.01, ***P ≤0.001 and ns P >0.05.

LIG PHE PRO CEL HCE STA TSS OA MIN AA ALK N C Hc CCW CCP MC Am Rm δ13C PBT SLA RGR
LIP –0.12ns 0.16ns 0.10ns –0.09ns –0.24ns –0.30* 0.17ns 0.08ns –0.33* 0.46** 0.25ns 0.12ns 0.16 ns 0.32* 0.35* 0.23ns 0.57*** –0.26ns 0.04ns 0.35* 0.17ns 0.13ns 0.06ns
LIG 0.19ns –0.15ns –0.48*** 0.20ns –0.17ns 0.04ns –0.24ns 0.14ns –0.06ns 0.20ns 0.17ns 0.18 ns 0.11ns 0.09ns 0.27* 0.20ns 0.07 ns 0.27* 0.27* –0.03ns –0.30* 0.12ns
PHE 0.15ns –0.76*** –0.92*** –0.10ns 0.62*** –0.84*** –0.77*** 0.61*** 0.88*** 0.32* 0.82*** 0.73*** 0.83*** 0.89*** 0.25ns 0.64*** 0.80*** 0.72*** –0.31* –0.79*** 0.61***
PRO –0.21ns –0.24ns –0.55*** –0.12ns 0.01ns –0.03ns 0.50*** 0.04ns 0.56*** 0.13ns 0.40** 0.35* 0.40* 0.77*** –0.22 ns 0.02ns 0.10ns 0.15ns –0.35* 0.09ns
CEL 0.73*** 0.07ns –0.60*** 0.56*** 0.65*** –0.47** –0.78*** –0.15ns –0.76*** –0.71*** –0.73*** –0.75*** –0.34* –0.37** –0.67*** –0.71*** 0.36* 0.59*** –0.51***
HCE –0.06ns –0.76*** 0.74*** 0.79*** –0.63*** –0.70*** –0.17ns –0.66*** –0.79*** –0.86*** –0.81*** –0.37* –0.56*** –0.55*** –0.54*** 0.45** 0.74*** –0.55***
STA 0.40* –0.23ns –0.14ns –0.25ns –0.07ns –0.49*** 0.11ns 0.08ns 0.08ns –0.11ns –0.55*** 0.67*** –0.12ns –0.12ns –0.74*** 0.11ns 0.38**
TSS –0.46** –0.74*** 0.19ns 0.50*** –0.43** 0.56*** 0.67*** 0.69*** 0.46** 0.17ns 0.75*** 0.48*** 0.45** –0.72*** –0.44** 0.56***
OA 0.59*** –0.42** –0.72*** –0.40** –0.63*** –0.52*** –0.65*** –0.74*** 0.05ns –0.61*** –0.43** –0.40* 0.49*** 0.73*** –0.60***
MIN –0.28* –0.58*** 0.10ns –0.66*** –0.63*** –0.74*** –0.64*** –0.02ns –0.44** –0.54*** –0.70*** 0.36* 0.44** –0.52***
AA 0.67*** 0.60*** 0.58*** 0.67*** 0.68*** 0.74*** 0.67*** 0.34* 0.24ns 0.55*** 0.18ns –0.61*** 0.44**
ALK 0.28* 0.81*** 0.61*** 0.71*** 0.85*** 0.22ns 0.51*** 0.76*** 0.79*** –0.22ns –0.82*** 0.60***
N –0.01ns 0.19ns 0.24ns 0.53*** 0.35* –0.50*** –0.01ns 0.06ns 0.41** –0.54*** –0.42**
C 0.80*** 0.83*** 0.97*** 0.21 ns 0.62*** 0.76*** 0.72*** –0.46** –0.60*** 0.69***
Hc 0.98*** 0.83*** 0.54*** 0.58*** 0.52*** 0.58*** –0.44** –0.65*** 0.69***
CCW 0.91*** 0.45** 0.47*** 0.55*** 0.64*** –0.45** –0.70*** 0.67***
CCP 0.45** 0.58*** 0.75*** 0.75*** –0.27* –0.82*** 0.44**
MC 0.31* 0.08ns 0.26ns 0.15ns –0.41* 0.07ns
Am 0.51*** 0.31* –0.83*** –0.43** 0.76***
Rm 0.63*** –0.18ns –0.77*** 0.44**
δ13C –0.28* –0.29* 0.46**
PBT 0.23ns –0.67***
SLA –0.27*