关键词: 新疆野苹果, 果实品质, 香气成分

Abstract: Taking the ripened fruits of 4 Malus sieversii as material, this paper studied the differences in fruit quality indicators including single fruit weight, fruit longitudinal diameter, fruit transverse diameter, fruit shape index, fruit stalk length, fruit stalk thickness, fruit hardness, soluble solid content, acidity, soluble sugar, peel color, flesh color, aromatic compounds, so as to provide references for reasonable utilization of Malus sieversii resources. The results showed that among the 4 Malus sieversii there were extreme significant （P<0.01）or significant （P<0.05）differences in quality indicators, such as single fruit weight and soluble solid content. There were no significant differences in some fruit quality indicators like fruit shape index. The fruits of 4 Malus sieversii contained 51 aromatic compounds (retrieved through NIST14). The main aromatic components (E)-2-hexenal, 1-hexanol, (E)-2-hexen-1-ol etc. were over 0.5%, representing 97.66% of the total aromatic content. There were differences among these 4 Malus sieversii both in aromatic components kinds and contents. Each of them contained unique aroma components, so aroma was an important criteria for evaluating Malus sieversii. There were also big hereditary differences in fruit quality indicators of these 4 Malus sieversii. Thus, all of them possessed good selection potential, since each of them had its own characteristics.

Key words: Malus sieversii, fruit quality, aromatic components