Table 1.
Shoot dry weight (g) | 0·29 ± 0·03 |
Root dry weight (g) | 0·15 ± 0·01 |
Stele area (mm2) | 2·91 ± 0·15 |
Secondary aerenchyma area (mm2) | 8·37 ± 1·45 |
Stem area (mm2) | 12·7 ± 1·48 |
Percentage of aerenchyma area in stems (%) | 63·8 ± 4·74 |
Lenticel height at stems above water surface (mm) | 6·60 ± 0·51 |
Aerenchyma area indicates the area not of gas spaces but of aerenchymatous tissues in cross-sections. Percentage of aerenchyma area indicates not porosity but the percentage of stem area occupied by aerenchymatous tissue area in cross-sections.
Digital images of stem cross-sections were photographed using a microscope and analysed with ImageJ 1·38x software (National Institutes of Health, USA) to measure each tissue area.
Values are the mean (±s.e.) of five plants.