Effects of UV-C radiation on Chardonnay fruit quality and photosynthetic physiology of grape leaves
[Objective]The effect of UV-C on the fruit quality formation and photosynthetic physiology of grape leaves during berry development were studied.[Methods]In this paper,the 8-year old grapevines of Chardonnay were subjected to regular UV-C radiation during berry development.The single berry weight,horizontal diameter,longitudinal diameteand,the soluble sugar,the organic acid,Vc and chlorophyll were measured.[Results]The result showed:with grape berry growth,ultraviolet radiation,not change single berry weight,horizontal diameter and longitudinal diameter growth rule and accumulation of soluble sugar and organic acid.And UV-C radiation didn't significantly alter the palisade tissue / spongy tissue structure of leaves of Cabernet Sauvignon and Chardonnay,but significant affected the internal fruit quality and promoted the increase of chlorophyll content and photosynthetic rate.UV-C radiation increased the soluble sugar content 3.25 ％ (20 days after bloom),8.27 ％ (80 days after bloom),respectively;reduced the organic acid content 34.18％ (80 days after bloom);and in the fruit maturation period,Vc contents in the fruits decreased,reduce 5.89％ (80 days after bloom);chlorophyll and photosynthetic rate increased 23.87％,139.24％,respectively.[Conclusion]Results of the study indicated that the UV-C radiation could induce the soluble sugar,the organic acid and chlorophyll,and resulted in the increase of internal fruit quality.
国家科技期刊平台
NSTL
万方数据
维普
