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Different irrigation strategies affect proximate composition and fatty acid rfiepoils of grape seeds under semi-arid conditions
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DOI：10.55730/1300-011X.3231.png)
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Abstract
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Grapevine (Vitis vinifera) is one of the most widely cultivated horticultural plants with high socioeconomic value, and it is extensively appreciated for its colorful berries and the wines made from its berries. Variations in the phytochemical compounds of different tissues of grape berries under different cultural practices have been explored in numerous studies in recent years. In this study, variations in the physical, proximate, and fatty acid compositions of grape (Vitis vinifera L. 'Red Globe') seeds under different partial root-zone drying and deficit irrigation treatments were investigated. The results showed that different irrigation treatments and irrigation levels affected the vitality, moisture, and oil contents of grape seeds. However, the number of fatty acids in grape seed oil did not change according to the different irrigation treatments. The major fatty acid in grape seed oil for all irrigation treatments was linoleic acid, followed by oleic acid, palmitic acid, and stearic acid, respectively. Under drought stress, the linoleic acid in the seeds of the grapes decreased while the oleic, palmitic, stearic, myristic, docosahexaenoic, and palmitoleic acids increased. The partial root-zone drying treatments increased the amount of polyunsaturated fatty acids (PUFAs) and the ratio of PUFAs to saturated fatty acids in the seeds.
Keywords:
Seed oil
drought stress
Vitis vinifera L.
water deficit
oil composition
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