Effect of Light Intensity and Temperature on Growth and Quality Parameters of Grafted Vines

Abstract

Light and temperature are the most important environmental conditions that impact the growth and quality of grafted vines. In this research, the most suitable light and temperature conditions were tested to determine the best environment for grafted vines grown in pots. This study was conducted to determine the influence of different growth conditions, such as open field, shaded greenhouse and unshaded greenhouse, on grafted vine growth and quality. The length and diameter of shoot, trunk diameter, mean and total leaf area, total soluble sugars, starch and total carbohydrate contents of 'Narince' and 'Trakya Ilkeren' vines, grafted on 5C rootstock, were investigated in this study. Shaded conditions yielded significantly higher shoot lengths, mean and total leaf areas than other conditions (p<0.05). Among the growth parameters, the highest correlation (r = 0.819) was observed between shoot length and plant total leaf area (p<0.01). The total soluble sugars, starch and total carbohydrates content of vines under shaded and unshaded conditions were higher (p<0.05) than those under open field conditions. Grafted vines had the highest carbohydrate content in unshaded conditions. Under different light intensity, temperature and relative humidity conditions studied, the better results were obtained in the case of unshaded conditions.