ns, nonsignificant.
aLinear (L) and quadratic (Q) trends describing the node number response to MDT.bMeans within rows followed by the same letter are not significantly different by Tukey’s honestly significant difference test at P ≤ 0.05.cTreatment not included in analysis because of plant death (globe amaranth) or not included in experiment (osteospermum).*Significant at P ≤ 0.05.**Significant at P ≤ 0.01.***Significant at P ≤ 0.001.