Akademik Veri Yönetim Sistemi
Scientia Horticulturae, cilt.341, 2025 (SCI-Expanded)
The cultivation of grapes is highly influenced by climatic conditions, and widespread cultivation reflects their adaptability to different climates around the world. Understanding the effects of climatic conditions on grape cultivation is crucial for optimizing grape production and maintaining quality. Few field studies have examined the impacts of changing climate and weather patterns on plant physiology and frost resistance, despite climate's critical role in cultivation. Over two years (2020 and 2021) of dormant periods, the impact of air temperature parameters (minimum, mean, and maximum) on the degree of frost on the 1st, 3rd, 5th, 10th and 15th days prior to the sample day was examined. Furthermore, an investigation was conducted into the correlation between the air temperatures throughout the sampling time and the changing in reducing sugar (ReS) and proline (Pro) content in the grapevine buds. Our study show that the minimum, maximum, and average air temperatures in the 1st, 3rd, 5th, 10tht, and 15th days preceding the sampling period significantly influence the freezing temperatures of three Vitis vinifera L. cv ‘Trakya İlkeren’: Tİ, ‘Michele Palieri’: MP and ‘Red Globe’: RG grape buds. The impact of pre-sampling air temperatures influenced the level of freezing degree in all cultivars. However, in the comparison of reducing sugars and proline content substantial differences in the grape buds were observed across cultivars. Our results also revealed a strong association between the reducing sugar content and maximum air temperatures on days 3, 5, and 10 before sampling in the early Tİ cultivar. Conversely, no significant correlation was found between air temperatures and reducing sugar levels in RG. Proline concentrations were most correlated with the minimum temperatures on the 5th, 10th, and 15th days before sampling, as well as the average temperature 10 days before sampling in RG cultivars. The correlation between air temperature and proline in the Tİ and MP cultivars was less significant than the RG cultivar.