Effect of Seawater Irrigation on the Sugars, Organic Acids, and Volatiles in ‘Reliance’ Grape

Ongoing climate change in recent decades exacerbated the decline agricultural water use, and seawater irrigation could feasibly alleviate shortage of resources, which restricts viticulture some countries. However, studies on effects grape volatiles are limited. Herein, ‘Reliance’ grapevines were irrigated with diluted (10% concentrations) field since pea-size berry stage (S1), EL 32 (S2), pre-veraison period (S3) every seven days. Results showed significantly increased sugar content decreased organic acids when compared control berries. Seawater did not induce secondary soil salinization, it enhanced fatty acid isoprene pathways without affecting amino pathway aroma. More terpenes found seawater-treated berries, including citronellol, ?-myrcene, ?-terpineol, trans-rose oxide. Gene profiling by RT-qPCR analysis revealed that VvLOXA be primary gene C6 volatile biosynthesis altered seawater. Moreover, during had best effect fruit quality. This work adds to our understanding aroma quality provides a sufficient basis for utilization vineyards.