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《South China Fruits》 2017-01
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Effects of Rootstocks on Components and Content Changes of Organic Acids in ‘Hosui' Pear Fruits

XU Wenqing;HE Yonghong;WANG Wei;YI Chengyong;WEI Jun;College of Horticulture and Plant Protection,Yangzhou University;Fruit Farm Management Station of Gaoyou;  
The changes on components and content of organic acids in the fruits of Pyrus pashia Buch.-Ham.,P.calleryana Decne,P.betulaefolia Bunge and the‘Hosui'pear grafted on them were compared with HPLC analysis to study the effects of rootstocks on metabolism of organic acid of their scion varieties.The results showed that the varieties of organic acids in the fruits of rootstocks and their scions were similar,including oxalic acid,quinic acid,malic acid,citric acid and shikimic acid.Organic acid metabolism of‘Hosui'could be regulated by its rootstocks.The content of citric acid would be decreased when the‘Hosui'pear was grafted on P.betulaefolia,leading to increased ratio of malic acid and citric acid,and increased fruit quality.Changes of the contents of malic acid and citric acid in pear fruit were related to rootstock varieties.Especially when the contents of malic acid and citric acid in fruit were not significantly different,it would be difficult to categorize the organic acid metabolism of pear fruit into malic acid-dominant or citric acid-dominant.
【CateGory Index】: S661.2
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