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Table 1 ANOVA for various eco-physiological traits measured in genotype 592 and 520 grown in a growth chamber (three blocks) and exposed to two experimental conditions: well-watered or drought

From: Genome-wide transcriptional and physiological responses to drought stress in leaves and roots of two willow genotypes

   Source of variation
Traits   Block Genotype (G) Treatment (T) G x T Error
   (d.f. = 2) (d.f. = 1) (d.f. = 1) (d.f. = 1) (d.f. = 52)
Total plant DWa (g) MS 0.048 0.055 20.355 0.315 0.059
  p-value 0.452 0.338 <0.001 0.025  
Total leaf N pool (g) MS 0.020 0.024 0.972 0.034 0.005
  p-value 0.030 0.038 <0.001 0.014  
RGRa (g g−1 wk−1) MS 0.003 0.006 1.188 0.018 0.003
  p-value 0.456 0.184 <0.001 0.025  
Number of syll. shoots MS 50 2269 1050 874 46
  p-value 0.342 <0.001 <0.001 <0.001  
Leaf DWa (g) MS 0.343 0.857 31.523 0.057 0.302
  p-value 0.328 0.098 <0.001 0.665  
LW/W (%) MS 108 2640 399 1465 220
  p-value 0.614 <0.001 0.183 0.013  
LARa (m2 g−1) MS 2.87 97.30 13.57 1.39 0.92
  p-value 0.052 <0.001 <0.001 0.223  
SLAa (m2 kg−1) MS 58.0 42.2 390.8 10.7 12.7
  p-value 0.015 0.074 <0.001 0.363  
Shoot DWa (g) MS 0.018 0.077 22.310 0.042 0.067
  p-value 0.768 0.289 <0.001 0.434  
SW/W (%) MS 441 1410 15 2190 223
  p-value 0.149 0.015 0.787 0.003  
LAPa (g m−2 wk−1) MS 68 728 8080 5 40
  p-value 0.191 <0.001 <0.001 0.729  
SPADa (rel. units) MS 3.6 844.1 46.9 2.3 8.1
  p-value 0.645 <0.001 0.020 0.596  
Root DWa (g) MS 0.476 0.321 15.384 0.405 0.126
  p-value 0.029 0.116 ≤0.001 0.079  
RW/W (%) MS 2490 31 4997 643 114
  p-value <0.001 0.606 <0.001 0.021  
No. of leaves MS 546 2640 36803 1995 231
  p-value 0.103 0.001 <0.001 0.005  
Leaf temperature (°C) MS 9.56 0.19 13.56 1.26 0.70
  p-value <0.001 0.607 <0.001 0.185  
RWCa (%) MS 105.1 86.7 818.2 132.0 199.3
  p-value 0.595 0.513 0.048 0.420  
Leaf Δ13C (‰) MS 1.7 40.6 138.8 14.5 1.1
  p-value 0.224 <0.001 <0.001 0.001  
Leaf Δ18O (‰) MS 0.16 0.12 59.12 5.94 0.27
  p-value 0.555 0.503 <0.001 <0.001  
Leaf Δ13C/Δ18O MS 0.002 0.035 0.242 0.023 0.001
  p-value 0.190 <0.001 <0.001 <0.001  
  1. The ANOVA model included the main effects Block, Genotype and Treatment and the Genotype x Treatment interaction; Block was treated as random factor, and Genotype and Treatment were treated as fixed factors. MS = mean square. d.f. = degrees of freedom
  2. aTrait abbreviations: DW dry weight (biomass), RGR relative growth rate, LAR leaf area ratio, LAP leaf area productivity, SLA specific leaf area, SPAD values indicate leaf chlorophyll content (here assessed two days before the final harvest), RWC relative water content P-values ≤ 0.05 are shown in bold