Interaction of rps10b-1 with high-branching mutants. (a) Effect of rps10b-1 on the number of rosette branches at maturity in max2-1, max4-1, brc1-2, brc1-2 brc2-1, amp1-1 and axr1-3 mutant backgrounds. Branches ≥ 0.5 cm were counted, average ± SEM, n = 8-10. (b-g) Rosette centres of selected genotypes from (a), seen from above at early flowering stage. The primary inflorescences were between 3.0 and 3.4 cm long and were removed to reveal the rosette leaf axils. Scale bar in (b) for (b-g) 5 mm. (h) The rps10b-1 bud initiation defect at apical rosette axils is rescued in the rps10b-1 amp1-1 double mutant. Quantitative analysis of rosette axillary shoot development at the reproductive stage was carried out as in Figure 2h, but only the topmost six rosette leaf axils of each plant were scored, n = 10-11.