Fig. 1
From: The old pea model in a new light: power of auxin over photoassimilates
Impact of sucrose feeding and cotyledon removal on axillary bud outgrowth competition. (a) Decapitated control plant. After axillary bud growth initiation the upper bud outcompeted the lower bud. Image captured 7 days after treatment. (b) Competition pattern between the upper and lower axillary bud in decapitated 7-day-old plants. (c) 0.4 M sucrose solution applied in 1.5 ml microtube mounted in place of removed apex. After bud-growth initiation the upper bud outcompeted the lower bud as in control plants. Image captured 7 days after treatment. (d) Competition pattern between the upper and lower axillary bud in 7-day-old decapitated plants fed with 0.4 M sucrose solution. (e) Decapitated and decotyledonated plant. The upper axillary bud was initiated and formed a shoot only. Image captured 7 days after treatment. (f) Competition pattern between the upper and lower axillary bud in 7-day-old decapitated and decotyledonated plants. (g) Plant decapitated at stage of 14-day-old. The upper axillary bud was initiated and formed a shoot only. Image captured 7 days after treatment. (h) Competition pattern between the upper and lower axillary bud in 14-day-old decapitated plants. (i) Plant decapitated at stage of 21-day-old. The upper axillary bud was initiated and formed a shoot only. Image captured 7 days after treatment. (j) Competition pattern between the upper and lower axillary bud in 21-day-old decapitated plants. (k) 0.4 M sucrose solution applied in 1.5 ml microtube mounted in place of removed apex in decotyledonated plant. The upper axillary bud was initiated and formed a shoot only. (l) Competition pattern between the upper and lower axillary bud in 7-day-old decapitated and decotyledonated plants fed with 0.4 M sucrose solution. Errors = standard error of the mean (n = 45). Statistically significant differences (identified by Student’s t-test): α = 0.05* and α = 0.01**
