Article Figures & Data
Figures
- Figure 1.
Chlorophyll fluorescence measurements in Italian alder foliage following application of NaCl.
- Figure 2.
Leaf necrosis development in Italian alder following application of the NaCl.
- Figure 4.
Correlation of chlorophyll fluorscence v cell electrolyte leakage in Italian alder following application of NaCl.
- Figure 3.
Correlation of chlorophyll fluorescence v leaf necrosis in Italian alder following application of NaCl.
Tables
- Table 1.
Interaction of sodium chloride and waterlogging singly and in combination on stres detection methodology and leaf macronutrient concentration.
Item df Waterlogging Sodium Chloride Sodium Chloride x Waterlogging chlorophyll fluorescence 95 nsz P<0.01 P<0.01 leaf necrosis 95 ns P<0.01 P<0.01 cell electrolyte leakage 95 ns P<0.01 P<0.01 growth 29 P<0.01 P<0.01 P<0.01 Ca 5 P<0.05 P<0.01 P<0.01 P 5 P<0.01 ns P<0.01 Mg 5 P<0.01 ns P<0.05 K 5 P<0.01 P<0.05 P<0.01 Na 5 ns P<0.01 P<0.01 Cl 5 ns P<0.01 P<0.01 ↵z ns = not significant; * = significant at P<0.05; ** = significant at P<0.01; compared to controls.
- Table 2.
Effects of sodium chloride applications on macronutrient concentrations and chlorophyll fluorescence in leaves of Italian alder growing in well drained and waterlogged compostz.
Nutrient Concentration (% leaf concentration) Treatment Ca P Mg K Na Cl Well Drained Compost Distilled Watery 0.84 0.34 0.40 0.34 0.03 0.28 2% NaCl 0.94** 0.36 nsx 0.41 ns 1.38 ns 0.32** 1.06** 4.5% NaCl 0.93* 0.34 ns 0.40 ns 1.40* 1.07** 3.08** 7% NaCl 0.88 ns 0.33 ns 0.37 ns 1.27* 1.86** 4.56** Waterlogged Compost Waterlogged Compost (W) 0.58** 0.17** 0.24** 0.78** 0.06 ns 0.31 ns W + 2% NaCl 0.56** 0.18** 0.25** 0.88** 0.39** 1.40** W + 4.5% NaCl 0.81 ns 0.35 ns 0.38 ns 1.07** 1.18** 3.55** W + 7% NaCl 0.95** 0.39** 0.38 ns 1.61** 1.66** 4.58** ↵z Analysis taken at day 30; n=6; Ca = calcium; P = phosphorous; Mg = magnesium; K = potassium; Na = sodium; Cl = chloride
↵y Trees growing in freely drained compost sprayed with distilled water were used as controls
↵x ns = not significant;
↵* = significant at P<0.05;
↵** = significant at P<0.01 compared to controls
- Table 3.
Effects of sodium chloride applications on growth and chlorophyll fluorescence of Italian alder growing in well drained and waterlogged compostz.
Treatment Stem Growth (cm) Chlorophyll Fluorescence (Fv/Fm) Well Drained Compost Distilled Watery 47.3 0.84 2% Salt 44.4nsx 0.82 4.5% salt 41.9* 0.81 7% salt 38.3** 0.80 Waterlogged Compost Waterlogged (W) 12.1** 0.83 W + 2% salt 8.6** 0.82 W +4.5% salt 7.4** 0.80 W + 7% salt 5.4** 0.80 r2 adj = 0.09%
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