Table 2.
Excluding indehiscent floral organs from ga20ox1 ga20ox2 results in growth relationships similar to wild type
| Genotype | Ln(Stamen) intercept (−GA) | Ln(Stamen) gradient (−GA) | Ln(Stamen) intercept (+GA) | Ln(Stamen) gradient (+GA) | Ln(Petal) intercept (−GA) | Ln(Petal) gradient (−GA) | Ln(Petal) intercept (+GA) | Ln(Petal) gradient (+GA) |
|---|---|---|---|---|---|---|---|---|
| Wild type (Col-0) | [0.8730] | [0.0133] | [0.9440] | [− 0.0005] | [1.1331] | [0.0083] | [1.2191] | [− 0.0120] |
| ga20ox1 | [0.8546] | [0.0204] | [0.8853] | [0.0044] | [1.1379] | [0.0138] | [1.1565] | [− 0.0120] |
| ga20ox2 | [0.8590] | [0.0172] | [0.9107] | [0.0029] | [1.1309] | [0.0089] | [1.1423] | [− 0.0015] |
| ga20ox3 | [0.9044] | [0.0097] | [0.9210] | [0.0052] | [1.1469] | [0.0067] | [1.1727] | [− 0.0007] |
| ga20ox1 ga20ox2 | [0.4345] a | [0.0285] a | [0.8396] a | [0.0091] | [0.7316] a | [0.0184] | [1.1509] | [0.0025] a |
| ga20ox1 ga20ox3 | [0.9670] | [0.0141] | [0.9019] | [0.0100] | [1.1770] | [0.0206] | [1.1849] | [− 0.0009] |
| ga20ox2 ga20ox3 | [0.8296] | [0.0202] | [0.8852] | [0.0095] | [1.0914] | [0.0159] | [1.1864] | [− 0.0018] |
| ga20ox1 ga20ox2 ga20ox3 | [− 0.6024]b | [0.0487]b | [0.8711]a | [0.0021] | [− 0.3146]b | [0.0658]a | [1.1364]a | [− 0.0036] |
| ± for 95% CI | [0.0528] | [0.0085] | [0.0528] | [0.0085] | [0.0660] | [0.0106] | [0.0660] | [0.0106] |
Re-analysis of linear regression modelling of stamen and petal lengths in newly opened Arabidopsis flowers across flower positions 1–10 under control growth conditions (see “Materials and methods”), excluding values from ga20ox1 ga20ox2 flowers where stamens were indehiscent at flower opening (Fig. 4b, c). Removal of data from indehiscent flowers marginally increased the explanatory power of both models: R 2 = 93% (stamens) and 85.8% (petals) of variance, respectively. Values shown are estimated intercepts (organ length in mm at theoretical flower position 0) and gradients (change in organ length in mm with flower position) and the ± adjustment for 95% confidence intervals (CI). Parameter estimates for ga20ox1 ga20ox2 are highlighted in bold. The analysis was performed on transformed data to fit statistical assumptions (see “Materials and methods”) so the values are given in square brackets. Superscript letters denote significant difference from the wild type (p < 0.05). Genotypes marked with different superscript letters are significantly different from one another