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The PCA scatterplot, indicating distinct differences in phytohormones, soluble sugars and return bloom depending on rootstock (A, C) and crop load (B, D) in “Ligol” and “Auksis” apple trees respectively. The analysis was conducted with all data resulting from 9 trees of “Ligol” and “Auksis” apple trees 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.
