关键词: 梨, 外形, 部位, 矿质元素, 内源激素

Abstract: In order to find out the differences of physiological characteristics among the shapes and positions of pear fruits，‘Korla Xiangli’pears were used as materials to investigate the differences of mineral elements，endogenous hormones and qualities in 3 shapes including calyx abscission and no-hump，calyx persistent and no-hump and calyx persistent and hump as well as 3 positions including stalk-end，equator and calyx-end in fruit with the identical shape. The results indicated that contents of N，Ca，Mg and B in pericarp were higher than those in flesh，N/Ca and K/Ca were lower than those in flesh. Contents of N，K and P as well as N/Ca in fruit of calyx persistent and hump were significantly higher than those in fruit of calyx abscission and no-hump and calyx persistent and no-hump in fruit with the identical shape，the content of Ca at calyx-end was significantly lower than that at stalk-end and equator while thecontent of N and N/Ca at calyx-end were significantly higher than those at stalk-end and equator. Moreover，contents of IAA，ZR and ABA in pericarp were higher than those in flesh. In fruit of calyx persistent and hump，the IAA content and（ZR + IAA + GA3）/ABA were significantly higher than those in fruit of calyx abscission and no-hump and calyx persistent and no-hump，while the content of ABA was significantly lower than that in fruit of calyx abscission and no-hump；Obvious distribution change pattern of the endogenous hormones at different positions of fruit was not observed. The comprehensive quality of fruit of calyx abscission and no-hump is prior to the fruit of calyx persistent according to the comparison of quality indicators. In fruit with the identical shape，SSC and vitamin C at calyx-end were significantly higher than those at stalk-end and equator.

Key words: pear, fruit shape, part, mineral element, endogenous hormone