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Fruit Characteristics of Citrus Trees Grown under Different Soil Cu Levels

文献类型： 外文期刊

作者： Mo, Xiaorong 1 ; Chen, Chuanwu 3 ; Riaz, Muhammad 4 ; Moussa, Mohamed G. 5 ; Chen, Xiangling 6 ; Wu, Songwei 1 ; Tan, Qiling 1 ; Sun, Xuecheng 1 ; Zhao, Xiaohu 1 ; Shi, Libiao 1 ; Hu, Chengxiao 1 ;

作者机构： 1.Huazhong Agr Univ, Key Lab Arable Land Conservat Middle & Lower Reac, Minist Agr, Wuhan 430070, Peoples R China

2.Beibu Gulf Univ, Coll Resources & Environm, Qinzhou 535011, Peoples R China

3.Guangxi Acad Specially Crops, Guangxi Lab Germplasm Innovat & Utilizat Specialt, Guilin 541004, Peoples R China

4.Zhongkai Univ Agr & Engn, Coll Resources & Environm, Guangzhou 510225, Peoples R China

5.Egyptian Atom Energy Author, Soil & Water Res Dept, Nucl Res Ctr, Cairo 13759, Egypt

6.Guangxi Acad Agr Sci, Hort Res Inst, Nanning 530007, Peoples R China

关键词： citrus; copper; pericarp color; sugar; acid

期刊名称：PLANTS-BASEL （ 影响因子：4.658； 五年影响因子：4.827 ）

ISSN：

年卷期： 2022 年 11 卷 21 期

页码：

收录情况： SCI

摘要： The effects of the increased soil copper (Cu) on fruit quality due to the overuse of Cu agents have been a hot social issue. Seven representative citrus orchards in Guangxi province, China, were investigated to explore the fruit quality characteristics under different soil Cu levels and the relationship between soil-tree Cu and fruit quality. These results showed that pericarp color a value, titratable acid (TA), and vitamin C (Vc) were higher by 90.0, 166.6, and 22.4% in high Cu orchards and by 50.5, 204.2, and 55.3% in excess Cu orchards, compared with optimum Cu orchards. However, the ratio of total soluble solids (TSS)/TA was lower by 68.7% in high Cu orchards and by 61.6% in excess Cu orchards. With the increase of soil Cu concentrations, pericarp color a value and Vc were improved, TA with a trend of rising first then falling, and TSS/TA with a trend of falling first then rising were recorded. As fruit Cu increased, pericarp color a value and TSS reduced and as leaf Cu increased, TSS/TA decreased while Vc was improved. Moreover, a rise in soil Cu enhanced leaf Cu accumulation, and a rise in leaf Cu improved fruit Cu accumulation. Fruit Cu accumulation reduced fruit quality by direct effects, leaf Cu improved fruit quality by direct and indirect effects. Soil Cu affected fruit quality by indirect effects by regulating leaf Cu and fruit Cu. Therefore, reasonable regulation and control of soil Cu concentrations can effectively increase pericarp color, sugar, and acid accumulation in citrus fruit.

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