梨果各部分(皮、肉、核)钙运转动态的研究初报  

Studies on calcium transportation and its movement in pear fruit

作　　者：刘剑锋[1] 彭抒昂[2] 程云清[1] 

机构地区：[1]华中农业大学,武汉430070 [2]吉林师范大学,吉林四平136000

出　　处：《广西植物》2007年第2期240-243,185,共5页Guihaia

基　　金：国家自然科学基金(30270924);吉林省教育厅科研计划项目(吉教所合字[2004]第57号)~~

摘　　要：以梨品种“黄花”为试材,研究了不同时期于果实的不同部位引入45Ca后各个部位放射性比活及钙分配比率变化。结果表明:(1)在幼果期,引入果肉的钙可快速向果皮与果核扩散,且向果皮扩散的速率较果核快;引入果核的钙也能向果肉中迅速运转。(2)在膨大期,引入果肉的钙可以向果皮、果核和种子扩散,但速率较幼果期慢;引入果核的钙基本上不向果皮和果肉运转。(3)在成熟期,引入果肉中的钙可以迅速向果皮与果核中积累,引入果核的钙向皮肉的运转微弱。Changes of specific activity and distribution ration of calcium in different parts of fruit were determined after radioactive ^45Ca was introduced to fruit through flesh, core and peduncle during different fruit development stages using‘Huanghua＇ （Pyrus pyrifolia NaKai） as materials. The results showed： （1） During young fruit stage, calcium that was injected to flesh could then be distributed to both peel and core rapidly,but to former with a higher speed; and calcium that was introduced from core could diffuse to flesh rapidly. （2）During rapid expanding stage, calcium that was injected to flesh could diffuse to peel,core and seeds,and diffusing speed was lower than young fruit stage; and calcium that was introduced from core could hardly diffuse to flesh and peel. （3）During maturation stage, calcium that was injected to core could hardly diffuse to flesh and peel.

关 键 词：梨 果实发育 钙 运转 

分 类 号：Q945.1[生物学—植物学]