Biomass partitioning and root to shoot ratio of 2-year-old pin oak (Quercus palustris) seedlings grown in either acidic or alkaline soil medium and inoculated with live or autoclaved soil from 3 different sites.
Soil pH1 | Site2 | Autoclaved inoculum | Shoot mass(g) | Root mass(g) | Total mass(g) | Root/shoot |
---|---|---|---|---|---|---|
Acidic | Forest | No | 7.83 a3 | 8.41 ab | 16.23 a | 1.09 a |
Acidic | Chlorotic | No | 5.83 ab | 7.92 abc | 13.76 ab | 1.36 a |
Acidic | Non-chlorotic | No | 7.46 a | 8.24 ab | 15.69 a | 1.13 a |
Acidic | Forest | Yes | 7.94 a | 8.43 ab | 16.37 a | 1.05 a |
Acidic | Chlorotic | Yes | 5.12 abcd | 6.95 abc | 12.07 ab | 1.39 a |
Acidic | Non-chlorotic | Yes | 7.19 a | 10.33 a | 17.51 a | 1.47 a |
Alkaline | Forest | No | 5.60 abc | 7.50 abc | 13.09 ab | 1.35 a |
Alkaline | Chlorotic | No | 3.36 bcd | 5.47 bcd | 8.83 bc | 1.72 a |
Alkaline | Non-chlorotic | No | 5.60 abc | 6.96 abc | 12.55 ab | 1.46 a |
Alkaline | Forest | Yes | 2.19 d | 3.24 d | 5.43 c | 1.50 a |
Alkaline | Chlorotic | Yes | 3.79 bcd | 4.79 cd | 8.49 bc | 1.35 a |
Alkaline | Non-chlorotic | Yes | 2.65 cd | 3.17 d | 5.82 c | 1.10 a |
Means | 5.38 | 6.78 | 12.15 | 1.33 | ||
ANALYSIS OF VARIANCE | ||||||
Model | 0.00124 | 0.0021 | 0.0010 | 0.0545 | ||
pH | 0.0001 | 0.0001 | 0.0001 | 0.0541 | ||
Site | 0.1421 | 0.5393 | 0.2936 | 0.1089 | ||
Inoculation | 0.0658 | 0.0687 | 0.0550 | 0.6066 | ||
pH*Site | 0.3650 | 0.5329 | 0.5157 | 0.1914 | ||
pH*lnoculation | 0.1680 | 0.0199 | 0.0472 | 0.0761 | ||
Site*lnoculation | 0.5098 | 0.6861 | 0.6551 | 0.5092 | ||
pH*Site*lnoculation | 0.2494 | 0.1813 | 0.1943 | 0.0887 |
↵1 Acidic soil pH = 5.5 and alkaline soil pH = 7.5.
↵2 Soil inoculum from pin oak forest stand, urban chlorotic pin oak trees, and urban non-chlorotic pin oak trees.
↵3 Means (n = 36) in the same column with a different letter are significantly different at the α = 0.05 level using a Fisher’s protected LSD.
↵4 Significance probabilities from the F statistic from an ANOVA. Significant values (P ≤ 0.05) in bold.