关键词: 梨, 果实, 发育, 钙, 果胶

Abstract: ‘Huanghua’ and ‘XiaJ1 aJ1’ pears that were significan tly diferent in storage an d texture trait
were used to investigate contents of Ca2
， total calcium in flesh， seeds an d pe ctin， the results showed that：
1) Contents of Ca2 and total calcium were the highest in young fruit stage，then they decreased along with fruits
development．Content of calcium in flesh of‘Huanghua’was significantly higher than that of Xiangnan before
harvest；2)Total calcium content in seeds Was much higher than that in flesh。and it increased along with fmits
development gradually．Content of total calcium in seeds of‘Huanghua’kept rising after rapid expanding stage of
middle July， while that of ‘~ an gnan ’ stopped rising after late July． A Ca2 rapid rising peak in seds of two
eultivars appeared in late fruit development；3)Content of proto pectin increased first，and then it began to de—
crease．The period when proto pectin in ‘Huanghua’stopped increasing was earlier than that of‘Xiangnan’．
and proto pectin of‘Huanghua’Was significantly lower than that of‘~angnan’in late fruit development．Watersoluble
pectin contents of two eultivars increased gradually，and they were adjaeent．

Key words: Pear, Fru it, Development, Calcium, Pectin