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Table 2 Correlations between bud set traits in a Populus nigra full-sib family (POP5).

From: Phenotypic plasticity, QTL mapping and genomic characterization of bud set in black poplar

  (a)       (b)       
  date2.5 date2 date1.5 date1 date0.5 subproc1 subproc2 date2.5 date2 date1.5 date1 date0.5 subproc1 subproc2
date2.5   0.97 0.89 0.81 0.62   -0.84   0.98 0.93 0.83 0.63   -0.24
   *** *** *** ***   ***   *** *** *** ***   **
date2 0.99   0.96 0.89 0.61   -0.92 0.99   0.98 0.90 0.69   -0.20
  0.00   *** *** ***   *** 0.00   *** *** ***   *
date1.5 0.93 0.97   0.97 0.63 0.24 -0.96 0.98 1.00   0.96 0.76 0.36 -0.12
  0.01 0.00   *** *** ** *** 0.00 0.00   *** *** *** ns
date1 0.87 0.93 0.98   0.68 0.33   0.96 0.99 1.00   0.88 0.50  
  0.02 0.01 0.00   *** ***   0.01 0.00 0.00   *** ***  
date0.5 0.78 0.72 0.58 0.84   0.03   0.88 0.93 0.96 0.98   0.49  
  0.03 0.04 0.05 0.02   ns   0.02 0.01 0.01 0.00   ***  
subproc1    -0.08 -0.17 0.11   -0.27    -0.31 -0.42 -0.59   0.28
    0.08 0.08 0.08   ***    0.07 0.07 0.05   ***
subproc2 -0.92 -0.98 -1.00    0.08   -0.56 -0.47 -0.37    0.74  
  0.01 0.00 0.01    0.08   0.06 0.06 0.07    0.04  
  1. POP5 grown in two experimental sites in Italy: Cavallermaggiore (CV) and Viterbo (VT). Data were analyzed on cumulative night length (CNL) basis. (a) Within site phenotypic (above the diagonal) and genetic (below the diagonal, with ± standard deviation (SD)) correlations for CV and (b) likewise for VT. The levels of significance of the Pearson coefficient are indicated as: ns, non-significant; *, P ≤ 0.05; **, P ≤ 0.01; ***, P ≤ 0.001.