Zhong Haixia, Yadav Vivek, Wen Zhang, Zhou Xiaoming, Wang Min, Han Shouan, Pan Mingqi, Zhang Chuan, Zhang Fuchun, Wu Xinyu
The State Key Laboratory of Genetic Improvement and Germplasm Innovation of Crop Resistance in Arid Desert Regions (Preparation), Key Laboratory of Genome Research and Genetic Improvement of Xinjiang Characteristic Fruits and Vegetables, Institute of Horticultural Crops, Xinjiang Academy of Agricultural Sciences, Urumqi, China.
Front Plant Sci. 2023 Jun 9;14:1200071. doi: 10.3389/fpls.2023.1200071. eCollection 2023.
Xinjiang is the largest grape-producing region in China and the main grape cultivation area in the world. The Eurasian grape resources grown in Xinjiang are very rich in diversity. The sugar composition and content are the main factors that determine the quality of berries. However, there are currently no systematic reports on the types and contents of sugars in grapes grown in Xinjiang region. In this research, we evaluated the appearance and fruit maturity indicators of 18 grape varieties during fruit ripening and determined their sugar content using GC-MS. All cultivars primarily contained glucose, D-fructose, and sucrose. The glucose content in varieties varied from 42.13% to 46.80% of the total sugar, whereas the fructose and sucrose contents varied from 42.68% to 50.95% and 6.17% to 12.69%, respectively. The content of trace sugar identified in grape varieties varied from 0.6 to 2.3 mg/g. The comprehensive assessment by principal component analysis revealed strong positive correlations between some sugar components. A comprehensive study on the content and types of sugar will provide the foundation to determine the quality of grape cultivars and effective ways to utilize resources to improve sugar content through breeding.
新疆是中国最大的葡萄产区和世界主要葡萄种植区。新疆种植的欧亚葡萄资源具有非常丰富的多样性。糖的组成和含量是决定浆果品质的主要因素。然而，目前尚无关于新疆地区葡萄中糖的种类和含量的系统报道。在本研究中，我们评估了18个葡萄品种在果实成熟过程中的外观和果实成熟指标，并使用气相色谱-质谱联用仪（GC-MS）测定了它们的糖含量。所有品种主要含有葡萄糖、D-果糖和蔗糖。各品种中葡萄糖含量占总糖的42.13%至46.80%，而果糖和蔗糖含量分别为42.68%至50.95%和6.17%至12.69%。葡萄品种中鉴定出的微量糖含量在0.6至2.3毫克/克之间。通过主成分分析进行的综合评估显示，一些糖成分之间存在强正相关。对糖的含量和种类进行综合研究将为确定葡萄品种的品质以及通过育种利用资源提高糖含量的有效途径提供基础。
