Table II. Partitioning of phenotypic variance among accessions subjected to three watering conditions.
The level of significance (ns, nonsignificant; *, P < 0.05; **, P < 0.01; and ***, P < 0.001) and the percentage of variance explained (SSx/SStotal) are indicated for each parameter (accession and soil water content) and for their interaction (accession × soil water content). Degrees of freedom are indicated in parentheses. Hypotheses were tested using F ratios from type III mean squares for each ANOVA. Nonsignificant terms are reported but not included in the final model.
| Variable | Accession (17) | Soil Water Content (2) | Accession × Soil Water Content (34) | Total |
|---|---|---|---|---|
| Rosette dry weight | 62.49*** | 15.12*** | 6.74** | 84.35 |
| Projected rosette area | 46.46*** | 34.06*** | 12.42*** | 92.93 |
| Total leaf area | 37.61*** | 40.60*** | 11.99*** | 90.21 |
| Growth rate | 13.37*** | 55.18*** | 12.19*** | 80.74 |
| No. of leaves | 82.37*** | 1.23*** | 4.15* | 87.75 |
| Lamina-petiole ratio | 46.29*** | 14.01*** | 11.19** | 71.49 |
| Transpiration rate | 41.28*** | 17.62*** | 12.90*** | 71.80 |
| Leaf temperature | 10.70** | 2.74** | 6.36ns | 13.44 |
| Water content | 46.90*** | 13.59*** | 8.36ns | 60.49 |
| Relative water content | 41.34*** | 18.84*** | 12.05** | 72.23 |
| Leaf dry matter content | 51.68*** | 6.05*** | 12.77** | 70.49 |
| Stomatal density | 29.42*** | 16.14*** | 18.26* | 63.81 |
| Flowering time | 57.80*** | 12.77*** | 7.05*** | 77.62 |