Journal
FOOD CHEMISTRY
Volume 339, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2020.127883
Keywords
Sodium selenite; Foliage spray; Apple quality; Sucrose metabolism enzyme
Funding
- Science and Technology Coordinating Innovative Engineering Project of the Shaanxi Province [2014KTCL02-12, 2016KTCL02-11]
- Shaanxi Engineering Research Center of Circular Agriculture [2015QTGC-083]
- Global Environment Facility (GEF) [G0203-PC]
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Selenium spraying significantly improves Fuji apple yield and internal quality, with increases in vitamin C content and total soluble sugar. The enzyme sucrose phosphate synthase plays a crucial role in sucrose metabolism.
Selenium is an essential trace element that improves fruit quality and nutritional value. However, the effect of sodium selenite on apple quality and its relative sucrose metabolism activity remains unclear. In this study, we investigated the roles of selenite spraying, in improving Fuji apple quality and sucrose metabolism-related enzyme activity. Results showed that foliar spraying of sodium selenite significantly (P < 0.05) increased apple fruit yield and internal quality, but no significant effects on external quality. The apple yield, vitamin C content, sugar-acid ratio and total soluble sugar increased 4.4% to 11.7%, 4.68% to 20.86%, 3.07% to 31.57%, and 4.53% to 18.89%, respectively. Se content is 9.5-fold compared to the control. Significant correlations were observed between neutral invertase, sucrose synthase activity and sucrose phosphate synthase enzymes, and sucrose phosphate synthase enzyme was most crucial. Spraying sodium selenite of 100-150 mg/L could be appropriate for improving Fuji apple yield and quality.
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