Effects of Bagging on the Micro Environment and Quality of Table Grape'Ruidu Kemei'
The'Ruidu Kemei'grape variety has shown ideal performance in Gansu production area.Aiming to screen the suitable fruit bag types with perfecting its flower and fruit management,effects of bagging using 3 different colored fruit bags(white,green,and gradient blue with the control of net bag)on the micro environment and fruit quality of'Ruidu Kemei'grapes were studied.Results showed that the daily variation of average light intensity in the gradient blue bag was higher than that in the white and green bags between 14:00 and 18:00 in a day.The daily average temperature bagged with white,green,and gradient blue increased compared to that in the net bag.After 45 days of bagging,the L*,a*,and b*values of the peel were higher in the gradient blue and green bags compared to that in other two treatments.The berry weights of fruits in gradient blue,white,and green bags were higher than that in net bag.Among them,the gradient blue bag was the highest,20.26％higher than that in the net bag,followed by the white bag,15.77％higher than that in the net bag.Treatment with 3 different colored fruit bags increased the solid-acid ratio of the fruits while reducing the soluble solids,titratable acidity,and flavonoid content.The gradient blue fruit bag resulted in a higher total sugar content,which was 2.54％higher compared to that in the net bag.After 15 days of bagging,the polyphenol content in the gradient blue bag was higher than that in other treatments,which was 7.96％higher than that in the net bag,after which it began to decline.The white bag treatment showed a sharp decrease in polyphenol content 30 days after bagging,reaching the lowest point at 45 days.Principal component analysis indicated that the gradient blue fruit bag could improve the uniformity and tidiness of fruit coloring in the Ruido Kemei variety,enhancing fruit quality and making it suitable for high-quality cultivation of this variety,whereas in areas with relatively weakerlight exposure,white fruit bags could be used.
国家科技期刊平台
NSTL
万方数据
