‘库尔勒香梨’花萼端不同形状果实的矿质元素和内源激素含量比较

以库尔勒香梨(Pyrus sinkiangensis Yü‘Korla Xiangli’)果实为材料,研究了脱萼不突起、宿萼不突起和宿萼突起等3种形状以及同一形状的果柄端、胴部和花萼端等3个部位的矿质元素、内源激素和品质差异。结果表明,果皮的N、Ca、Mg、B含量较果肉高,而N/Ca和K/Ca则较果肉低;宿萼突起果中,N、K、P含量和N/Ca显著高于脱萼不突起果和宿萼不突起果;花萼端Ca含量显著低于果柄端和胴部,而N含量和N/Ca均显著高于果柄端和胴部。果皮的IAA、ZR和ABA含量较果肉高,并且宿萼突起果的IAA含量和(ZR+IAA+GA3)/ABA显著高于脱萼不突起果和宿萼不突起果,ABA含量则显著低于脱萼不突起果;果实不同部位的各内源激素分布未发现明显变化规律。脱萼不突起果综合品质好于宿萼果,花萼端可溶性固形物和维生素C含量显著高于果柄端和胴部。

The Comparison of the Mineral Elements，Endogenous Hormones in Different Shapes and Positions of‘Korla Xiangli’Pears

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.