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Table 3 Quantitative genetic partitioning of variation and significance of effects across drought and control treatments, and Pearson correlation coefficients for across-treatment genotypic correlations (r GE ) for each trait. Standard error is indicated in parenthesis. Estimates of r GE for all traits are significantly different than 0, as indicated by a significant effect of Genotype; r GE for above- and below-ground biomass, root:shoot ratio, and fruit production are significantly less than 1, as indicated by significant effects of genotype × treatment interactions

From: Genotypic variation in biomass allocation in response to field drought has a greater affect on yield than gas exchange or phenology

Random effects Fixed effect Cross env corr.
Trait Block(treatment) Genotype Genotype × treatment IRGA ID Residual Treatment r GE
       df F  
A 1.0489 (0.6012) 24.6608 (3.7907)** 0 (0)NS 25.2078 (20.6757) NS 52.363 (1.9286)** F1, 13.9 1.83NS 0.79
Fv'/Fm' 0.00004 (0.00002) 0.004 (0.0006)** 0.000004 (0.00004) NS 0.001 (0.0008) NS 0.002 (0.00007)** F1, 13.9 0.10NS 0.94
gs (mol m-2 s-1) 0.0008 (0.0004) 0.004 (0.0007)** 0 (0)NS 0.005 (0.004) NS 0.02 (0.0007)** F1, 13.9 10.52§ 0.59
W g 8.147 (5.031) 48.858 (11.887)** 0 (0)NS 0 (.)NS 516.8 (19.030)** F1, 14 16.4§ 0.37
δ13C 0.032 (0.032) NS 1.361 (0.4875)§ 0 (0)NS -- 0.532 (0.063)** F1, 10.3 0.84NS 0.83
LMA (g m-2) 2.270 (1.813)NS 27.552 (6.051)** 0 (0)NS -- 182.32 (7.717)** F1, 9.44 6.88 0.49
Above-ground biomass (g) 16.732 (6.578)§ 76.132 (11.384)** 10.403 (2.784)* -- 69.470 (2.678) F1, 15.2 18.73* 0.89
Below-ground biomass (g) 0.009 (0.004) 0.099 (0.015)** 0.012 (0.004)* -- 0.098 (0.004) F1, 16.5 12.09§ 0.90
Root:Shoot ratio 0.00002 (0.000009) 0.00004 (0.00001)** 0.00003 (0.00001)§ -- 0.0003 (0.00001)** F1, 16.2 21.57* 0.42
Leaf area (cm2) 2.393 (1.271) 25.084 (4.440)** 2.280 (1.798) NS -- 48.864 (2.182)** F1, 11 9.76§ 0.70
Plant height (cm) 5.308 (2.570) 94.227 (13.967)** 2.292 (3.182) NS -- 148.64 (5.635)** F1, 14.4 22.41* 0.80
Fruit production (number of fruits) 384.17 (162.83)§ 5832.09 (887.96)** 1227.68 (251.17)** -- 4857.45 (183.6)** F1, 19.7 59.06** 0.90
Days to flowering 0.3736 (0.166) 4.074 (0.596)** 0 (.)NS -- 6.8388 (0.243)** F1, 13.9 1.88NS 0.74
  1. A photosynthetic rate, Fv'/Fm' chlorophyll fluorescence in light, g s stomatal conductance, E transpiration rate, W g intrinsic water use efficiency (A/g s ), δ 13 C carbon isotope composition, N area nitrogen concentration on a leaf area basis, LMA leaf mass per area, NSnot significant, P < 0.1, P < 0.05, § P < 0.01, * P < 0.001,** P < 0.0001