Abstract: Method of body interstocks, head space-solid phase microextraction (HS-SPME) and gas chromatography-mass spectrometry (GC-MS) were used to measure the composing factors of fruit quality and aroma compound of Honglu fruit on different cultivars body interstocks. The results showed that the firmness (7.02 kg·cm-2) and soluble solid sugar content (12.5%) of Honglu fruit on Fuji Highly graft were the highest compared with the fruit on other body graft. However, the firmness and SSC of Honglu fruit on Jonagold interstock were the lowest, but its fruit weight was the highest (211.85 g). The body interstock could not affect the number of aroma compounds of Honglu, but it could affect kinds of aroma significantly. The relative content of the same aroma category of Honglu fruit was different on different cultivars body interstocks. The contents of esters and alcohols were the highest (4.56% and 42.93％, respectively) on Fuji interstock, and they were the lowest on Jonagold body graft, 1.98% and 29.76% respectively. So grafting on Fuji body interstock could enhance the fruit quality of Honglu apple.

Key words: apple, fruit qulity, body interstock, gas chromatography-mass spectrometry