摘要
采用营养液水培的栽培方式,以华南型黄瓜材料“9930”为研究对象,在黄瓜植株雌花开放的当天(记为0 d)对黄瓜植株分别进行3个不同供氮水平的处理(CK 12 mmol/L,T1 0 mmol/L和T2 3 mmol/L),研究在短期(7 d)低氮处理期间,黄瓜中抗坏血酸(AsA)和可溶性糖含量变化。结果表明,与对照相比,在低氮处理(T1和T2)果实中总量抗坏血酸(T-AsA)和AsA含量最高增加了69.5%和24%,叶片中T-AsA和AsA含量最高增加了22.4%和20.7%;处理果实和叶片中葡萄糖、果糖、半乳糖含量增加,其中葡萄糖、果糖含量增加显著,果实中木糖含量减少,处理第3 d果实中糖含量达到最大值,与对照相比增加了1倍。试验结果表明,短期低氮处理能够增加黄瓜中AsA和可溶性糖含量,有利于改善果实品质。
In this experiment,the cultivation method of nutrient solution hydroponic culture was adopted,and the South China cucumber material“9930”was taken as the research object.On the day when the female flower of the cucumber plant was opened(recorded as 0 day),the cucumber plants were treated with three different nitrogen supply levels(CK 12 mmol/L,T1 0 mmol/L,T2 3 mmol/L).The changes in AsA content and soluble sugar content in cucumber during short-term low-nitrogen treatment were studied.The results showed that the contents of T-AsA and AsA in fruit increased by 69.5%and 24%in the low-nitrogen treatments(T1 and T2)comparing with the control,and the contents of T-AsA and AsA in leaf increased by 22.4%and 20.7%,respectively.The contents of glucose,fructose and galactose increased in the leaf and fruit especially the content of glucose and fructose increased significantly,the content of xylose in the treated fruit decreased.On the third day of treatment,the sugar content in cucumber fruit reached the maximum,increased by 200%.The results showed that shortterm low-nitrogen treatment can increase the content of AsA and soluble sugar in cucumber,which is beneficial to improve fruit quality.
作者
李云云
李强
余宏军
蒋卫杰
LI Yun-yun;LI Qiang;YU Hong-jun;JIANG Wei-jie(Institute of Vegetables and Flowers,Chinese Academy of Agricultural Sciences,Beijing 100081)
出处
《中国土壤与肥料》
CAS
CSCD
北大核心
2019年第5期46-52,共7页
Soil and Fertilizer Sciences in China
基金
国家自然科学基金项目(31471920,31672203)
关键词
花期
低氮处理
黄瓜
ASA
可溶性糖
flowering stage
low-nitrogen treatment
cucumber
AsA
soluble sugar
作者简介
李云云(1991-),女,山东东营人,硕士研究生,研究方向为蔬菜生理和无土栽培技术。E-mail:yijinlidy@163.com;通讯作者:蒋卫杰,E-mail:jiangweijie@caas.cn。
