Abstract
Berry qualities of the grafted 'Gold Finger' grapevines were determined to evaluate the impacts of the resistant rootstocks on fruit quality. Compared to the own-rooted vines, berry and cluster weights and skin color were altered by the rootstocks to varying extents. The rootstock of 101-14M maintained TSS/TA and the contents of fructose, glucose, and sucrose, and SO4 decreased these parameters. 101-14M and 3309C increased and reduced the resveratrol content, respectively. SO4, 5BB, and 3309C decreased the total free amino acid content, along with the changes in amino acid composition. The amounts of aroma components were widely altered by the rootstocks. Additionally, a digital gene expression tag profiling revealed that the biological processes were largely altered by 3309C and 101-14M, including sugar, amino acid, and aroma metabolisms. In summary, the rootstock of 101-14M generally maintained berry quality, and SO4, 5BB, and 3309C imparted varying influences on different quality parameters.
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