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Table 1 Phenotypic (above the diagonal) and genetic (below the diagonal) correlations for photosynthetic characteristics and wood traits in the linkage mapping population (n = 300)

From: Identification and characterization of nuclear genes involved in photosynthesis in Populus

  Pn Cond Ci Trm D H V MFA Hol α-cel Lig
Pn 1 0.624** 0.066** 0.374** 0.330** 0.322** 0.310** −0.109** −0.011 0.007 −0.086**
Cond 0.626** 1 0.729** 0.732** 0.101** 0.075* 0.058 −0.042 0.016 −0.035 −0.082*
Ci 0.067 0.738** 1 0.756** −0.079* −0.098** −0.107** 0.041 0.047 −0.032 −0.060
Trm 0.376** 0.739** 0.770** 1 0.128** 0.114** 0.089** 0.044 0.038 0.027 0.007
D 0.332** 0.101 −0.080 0.130* 1 0.722** 0.938** −0.035 0.026 0.147** −0.066*
H 0.325** 0.075 −0.099 0.118* 0.732** 1 0.772** −0.064 0.061 0.155** −0.025
V 0.312** 0.036 −0.108 0.091 0.940** 0.776** 1 −0.040 0.033 0.144** −0.058
MFA −0.114* −0.043 0.047 0.050 −0.037 −0.070 −0.043 1 −0.096** −0.180** 0.151**
Hol −0.023 0.035 0.084 0.074 0.050 0.130 0.064 −0.137* 1 0.200** −0.080*
α-cel 0.008 −0.038 −0.030 0.027 0.155** 0.164** 0.153** −0.209** 0.455** 1 −0.367*
Lig −0.088 −0.084 −0.063 0.006 −0.068 −0.027 −0.060 0.160** −0.164* −0.398** 1
  1. **P ≤ 0.01; *P ≤ 0.05. P-value shows the credibility of correlation.
  2. Pn, photosynthetic rate; Cond, conductance to H2O; Ci, intercellular CO2 concentration; Trm, transpiration rate; MFA, microfiber angle; H, tree height; D, diameter at chest height; V, stem volume; Hol, holocellulose; α-cel, α-cellulose; Lig, lignin content.