Journal of Zhejiang Agricultural Sciences ›› 2025, Vol. 66 ›› Issue (12): 3002-3007.DOI: 10.16178/j.issn.0528-9017.20250546

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Effects of growth regulator treatments on fruit quality of Vitis davidii Foëx

ZHU Mengfei1(), ZHOU Pingping2, ZHENG Ting3, WU Jiang3,*()   

  1. 1. Agricultural Economic Service Center in Gaoqiao Sub-district, Tongxiang City, Tongxiang 314515, Zhejiang
    2. Puyuan Dasheng Fruit and Vegetable Farm in Tongxiang City, Tongxiang 314520, Zhejiang
    3. Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, Zhejiang
  • Received:2025-07-30 Online:2025-12-11 Published:2025-12-17

Abstract:

Vitis davidii Foëx is an important wild resource in China, with rich nutrients and strong resistance, but small fruit size, multiple seeds, low sugar content, and no aroma. This study investigated the effects of commonly used treatments such as GA, CPPU, TDZ, ABA, BR, and MeJA on the seedlessness, fruit expansion and fruit quality of Vitis davidii Foëx. The results showed that the single fruit weight treated with 25-75 mg·L-1 GA during the peak flowering period was significantly(p<0.05) greater than that treated with CPPU or TDZ. T5 treatment during the peak flowering period (using 25 mg·L-1 GA+2.5 mg·L-1 TDZ for the first treatment, and 50 mg·L-1 GA+10 mg·L-1 TDZ for the second treatment after 15 days) showed the best seedlessness effect, the highest epidermal thickness, total epidermal cell area, and average epidermal cell area. The total phenolic and anthocyanin contents of Vitis davidii Foëx fruits of T5 treatment during the final flowering period were the highest, while the soluble solids (TSS) content, resveratrol content, and tannin content of H2O treatment (T0) were the highest.The fruit quality of Vitis davidii Foëx grown in greenhouses was better than that in long corridors. During the color conversion period, MeJA treatment resulted in the highest bunch weight and single fruit weight, as well as the highest TSS content, while BR treatment resulted in the highest resveratrol, tannin, and anthocyanin contents of Vitis davidii Foëx fruits. The above results provide a theoretical basis for the cultivation and production of Vitis davidii Foëx.

Key words: Vitis davidii Foëx, seedlessness, expansion, maturity, fruit quality

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