Effects of interaction of UV-B radiation and water deficit on phenolic compounds in 'Pinot Noir' fruit

Authors

  • Meng Sun 1) Centre for Viticulture and Oenology, Faculty of Agriculture and Life Sciences, Lincoln University, Christchurch, New Zealand; 2) Jiangsu Academy of Agricultural Sciences (JAAS), Nanjing, Jiangsu, China
  • B. Jordan Centre for Viticulture and Oenology, Faculty of Agriculture and Life Sciences, Lincoln University, Christchurch, New Zealand
  • R. Hofmann Centre for Viticulture and Oenology, Faculty of Agriculture and Life Sciences, Lincoln University, Christchurch, New Zealand
  • G. Creasy Sabrosia SAS, Pompignan, France

DOI:

https://doi.org/10.5073/vitis.2022.61.27-36

Keywords:

UV-B radiation, water deficit, skin total phenolics, skin anthocyanin, skin tannins, seed tannins, Vitis vinifera 'Pinot Noir'

Abstract

Environmental issues (high UV-B radiation and water deficit) can challenge 'Pinot Noir' growth in New Zealand. The aim of this work is to determine separated and combined UV-B and water deficit effects on phenolic composition of 'Pinot Noir' fruit. In 2016-2017 vintage, two rows of 'Pinot Noir' grapevines in the West Vineyard at Lincoln University were chosen for the study. In comparison to exposure to natural UV-B in the vineyard, the potted vines were put into a glasshouse for the experiments. When berries were directly exposed to UV-B and water deficit, skin anthocyanin and skin total phenolics accumulated to a greater degree in the berry skins. The combined stresses caused larger increases in contents of skin total phenolics than the water deficit in the vineyard and glasshouse. Skin tannin contents were increased by UV-B and water deficit, but there were no consistent changes in seed tannin contents between treatments during ripening and no statistically significant differences between treatments at harvest. This research reported that canopy management (UV-B exposure) interacting with a moderate water deficit may be a good way for vineyard management to increase the accumulation of anthocyanins and tannins in berry skins.

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Published

2022-02-17

Issue

Vol. 61 No. 1 (2022): Vitis

Section

Article

License

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