Effects of Different Concentrations of Exogenous SA on Fruit Quality of'Cabernet Sauvignon'
Eight-year-old wine grape variety'Cabernet Sauvignon'was sprayed with SA from late July to early August during the grape color transformation period to explore the effect of SA on fruit quality during fruit development,to provide reference for improving wine grape quali-ty.The results showed that there was no significant difference in 100-seed weight of'Cabernet Sauvignon'during the whole growth period when the grape was sprayed with SA,the content of organic acid decreased gradually.At harvest time,the content of carbohydrate reached the highest and the content of organic acid reached the minimum.5 mmol/L SA treatment at harvest time(110 days after anthesis)could signifi-cantly reduce the content of titratable acid in grape fruit,while 3 mmol/L SA treatment could significantly increase the content of carbohydrate and phenol in grape fruit.The SA treatment could improve the quality of'Cabernet Sauvignon'grape fruit.
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