平欧杂种榛果实发育过程中 Vc 含量的变化研究

摘要

以7年生平欧杂种榛‘82-11’、‘84-237’及‘84-402’为研究对象，在果实成熟期每隔3～6天，采用2，6-二氯靛酚滴定法测定Vc含量，分析其果实发育过程中Vc含量变化。结果表明：幼果迅速发育期， Vc相对含量和绝对含量大幅度下降，平均降幅为90.67％和64.44％；从果壳硬化期到果实成熟， Vc相对含量和绝对含量变化不大，降幅较小，其平均下降幅度为39.72％和30.47％。%Three 7-year-old crossbred hazelnuts ‘82-11 ’ , ‘84-237 ’ and ‘84-402 ’ were selected as the tested samples.During fruit maturation period , Vc contents were detected every 3~6 days by using 2, 6-two chloride in-dophenol titration method , the variation of Vc content of hazelnut during fruit development was studied .The results showed that during young fruit rapid development , there was a dramatic reduction both in Vc relative content and in absolute content .During hazelnut shell hardening period to fruit maturation period , Vc relative content and ab-solute content changed little , the average decreasing ranges were 39.72%and 30.47%respectively , and the re-duction rate was small .