Figure 1.

The effect of rootstock (B) and crop load (C) interaction (A) on the ratio of flowering promoters to inhibitors phytohormones in “Ligol” and “Auksis” buds. *The different letters on bars of same cultivar indicate significant differences. The analysis was conducted with all data resulting from 9 trees of “Ligol” and “Auksis” apple tree grafted on M.26, M.9, B.396, P 67, and P 22, with crop-load adjusted to 75, 113, and 150 fruits per tree. The data were processed using analysis of variance (ANOVA), the Turkey (HSD) multiple range test at the confidence level p = 0.05. Promoters—zeatin and jasmonic acid; Inhibitors—indolyl-3 acetic acid; abscisic acid; gibberellins (GA₇, GA₃, GA₁).