Hormone interplay in the regulation far-red-responsive stem elongation in tomato 4 155 Figure S4.5. Stem responses to different IAA treatments. We treated 14 day-old tomatoes with 25 μM or 100 μM IAA by whole plant spray, or by brushing onto leaf 1 and internode 1. Spray and brush were applied 3 times over one week treatment period. The data includes measurements of (a) stem length of 25 μM IAA treatment, (b) hypocotyl length of 25 μM IAA treatment, (c) hypocotyl diameter of 25 μM IAA treatment, (d) stem length of 100 μM IAA treatment, © hypocotyl length of 100 μM IAA treatment , (f) hypocotyl diameter of 100 μM IAA treatment, (g) stem length of brushing 100 μM IAA on internode or leaf 1, (h) hypocotyl length of brushing 100 μM IAA on internode or leaf 1, (i) hypocotyl diameter of brushing 100 μM IAA on internode or leaf 1,. The data are presented as mean ± SEM, and different letters indicate significant differences between treatments based on ANOVA analysis with Tukey’s post hoc test (P<0.05). There were 6-9 biological replicates, and the experiment was repeated twice. Picture (a) was created with Biorender.
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