The Effect of N and KH 2 PO 4 on Skin Color, Sugars, and Organic Acids of “Flame Seedless” Grape
In: Agronomy, Vol 13, Iss 902, p 902 (2023, Jg. 13 (2023), Heft 902, p 902
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Zugriff:
Anthocyanins, soluble sugars, and organic acids play a vital role in the color and flavor of grape berries. N and KH 2 PO 4 are essential nutrients for grape growth and development. However, the research on the effects of foliar spraying of KH 2 PO 4 on the skin color and flavor of grapes under different N levels were not systematic. In this study, “Flame seedless” grapes were used as the test material. There were six treatments in this experiment, including low nitrogen (LN), low nitrogen + KH 2 PO 4 (LNK), moderate nitrogen (MN), moderate nitrogen + KH 2 PO 4 (MNK), high nitrogen (HN), and high nitrogen + KH 2 PO 4 (HNK). Foliar spraying of KH 2 PO 4 on grapes significantly increased total K, anthocyanin contents, and the color index of red grapes (CIRG) in LN, MN, and HN. In the N and KH 2 PO 4 treatments, foliar spraying of KH 2 PO 4 significantly increased the content of methylated, acetylated, and coumarylated anthocyanins under MN treatment. The glucose and fructose contents of MNK were the highest compared to other treatments. The sole use of N showed the highest glucose and fructose contents with MN application. Anthocyanin had a significant positive correlation with soluble sugars; and showed a significant negative correlation with organic acids. Overall, foliar spraying of 0.5% KH 2 PO 4 improved the color and flavor of “Flame seedless” grapes under all N levels, with the most significant effect at MN.
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The Effect of N and KH 2 PO 4 on Skin Color, Sugars, and Organic Acids of “Flame Seedless” Grape
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Autor/in / Beteiligte Person: | Wu, Linnan ; Wang, Fangxia ; Sha, Riye ; Li, Xujiao ; Yu, Kun ; Feng, Jianrong |
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Zeitschrift: | Agronomy, Vol 13, Iss 902, p 902 (2023, Jg. 13 (2023), Heft 902, p 902 |
Veröffentlichung: | MDPI AG, 2023 |
Medientyp: | academicJournal |
ISSN: | 2073-4395 (print) |
DOI: | 10.3390/agronomy13030902 |
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