Effects of enhanced UV-B radiation on the quality of grape fruits
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DOI:10.7606/j.issn.1000-7601.2010.01.30
Key Words: UV-B  grape  quality
Author NameAffiliation
SUN Ying College of Enology, Northwest A & F University, Yangling, Shaanxi 712100, China 
ZHANG Zhenwen College of Enology, Northwest A & F University, Yangling, Shaanxi 712100, China Shaanxi Engineering Research Center for Viti-Viniculture, Yangling, Shaanxi 712100, China 
ZHANG Jingyu College of Enology, Northwest A & F University, Yangling, Shaanxi 712100, China 
YANG Lifang College of Enology, Northwest A & F University, Yangling, Shaanxi 712100, China 
GAO Mingliang College of Enology, Northwest A & F University, Yangling, Shaanxi 712100, China 
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Abstract:
      On the basis of outdoor natural sunlight, four radiation intensities including 0μW/cm2 (CK), 10.2 μW/cm2 (T1), 20.7 μW/cm2 (T2) and 30.5 μW/cm2 of ultraviolet-B radiation were used to study their effects on growth and quality of the Vitis vinifera Cabernet Sauvignon. The results showed that enhanced ultraviolet radiation decreased grape size, yield and fruit coloration index. At the same time physiochemical indexes, such as reducing sugar, Titrable acid, A∕S and TSS were down (the sequence was: CK>T1>T2>T3) and the growth of grape were retarded to a certain extent.