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. 2017 Dec 20;31(2):171–191. doi: 10.1007/s00497-017-0320-3

Table 1.

Linear regression modelling of floral organ lengths across the early Arabidopsis inflorescence

(a)
Genotype Ln(Pistil) intercept (−GA) Ln(Pistil) gradient (−GA) Ln(Stamen) intercept (−GA) Ln(Stamen) gradient (−GA) Petal intercept (−GA) Petal gradient (−GA) Sepal intercept (−GA) Sepal gradient (−GA)
Wild type (Col-0) [0.8639] [− 0.0030] [0.8730] [0.0133] 3.1144 0.0275 2.5604 − 0.02445
ga20ox1 [0.9282]a [0.0024] [0.8546] [0.0204] 3.1296 0.0452 2.7309a − 0.01884
ga20ox2 [0.7523]b [0.0034] [0.8590] [0.0172] 3.0995 0.0300 2.2452b 0.01101a
ga20ox3 [0.8589] [− 0.0064] [0.9044] [0.0097] 3.1680 0.0213 2.4997 − 0.01264
ga20ox1 ga20ox2 [0.3903]c [0.0216]a [− 0.0945]a [0.0914]a 1.3181a 0.1325a 2.0323c 0.01216a
ga20ox1 ga20ox3 [0.9450] [0.0071]b [0.9670]b [0.0141] 3.2349 0.0753b 2.6641a − 0.00051a
ga20ox2 ga20ox3 [0.6606]b [0.0162]a [0.8296] [0.0202] 2.9798 0.0527 2.1825b 0.01287a
ga20ox1 ga20ox2 ga20ox3 [0.0436]d [0.0362]c [− 0.6024]c [0.0487]b 0.6830b 0.0737b 2.0175d − 0.00105
± for 95% C.I. [0.0481] [0.0078] [0.0672] [0.0108] 0.1942 0.0312 0.0870 0.01298
(b)
Genotype Ln(Pistil) intercept (+GA) Ln(Pistil) gradient (+GA) Ln(Stamen) intercept (+GA) Ln(Stamen) gradient (+GA) Petal intercept (+GA) Petal gradient (+GA) Sepal intercept (+GA) Sepal gradient (+GA)
Wild type (Col-0) [0.9233] [− 0.0111] [0.9440] [− 0.0005] 3.3775 − 0.0362* 2.8789* − 0.05398*
ga20ox1 [0.9070] [− 0.0099]* [0.8853] [0.0044]* 3.1862 − 0.0358* 2.7967* − 0.04837*
ga20ox2 [0.8356]a* [− 0.0034] [0.9107]* [0.0029] 3.1416 − 0.0049 2.6190a* − 0.01852a*
ga20ox3 [0.8380] [0.0045]a [0.9210] [0.0052] 3.2390 − 0.0017 2.8923* − 0.04217*
ga20ox1 ga20ox2 [0.8460]* [− 0.0015]* [0.8396]a* [0.0091]* 3.1806* 0.0064a* 2.6933a* − 0.01737a*
ga20ox1 ga20ox3 [0.9196] [− 0.0038] [0.9019] [0.0100] 3.2915 − 0.0040* 2.7725* − 0.03004b*
ga20ox2 ga20ox3 [0.8875]* [− 0.0008]* [0.8852] [0.0095] 3.2821 − 0.0051* 2.7590* − 0.01666ab*
ga20ox1 ga20ox2 ga20ox3 [0.9033]* [− 0.0093]* [0.8711]a* [0.0021]* 3.1326a* − 0.0118* 2.7891* − 0.03058b*
± for 95% C.I. [0.0481] [0.0078] [0.0672] [0.0108] 0.1942 0.0312 0.0870 0.01300

Linear regression modelling of floral organ lengths in stage 13 Arabidopsis flowers across flower positions 1–10 under control growth conditions (a) and exogenous GA treatment (b) (see “Materials and methods”). The linear models fitted accounted for a significant proportion of variance (p < 0.001): R 2 = 86% (pistils), 92% (stamens), 81.7% (petals) and 63.6% (sepals) 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) given four independent flowers per genotype per flower position, and the ± adjustment for 95% confidence intervals (CI). Where analysis was performed on transformed data to fit statistical assumptions (see “Materials and methods”), these 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. Asterisks indicate a significant effect of GA treatment (p < 0.05) compared to control growth conditions