苯丙烯酸对黄瓜幼苗生理特性的影响

应用生态学报 ›› 2005, Vol. 16 ›› Issue (5): 915-918.

苯丙烯酸对黄瓜幼苗生理特性的影响

吴凤芝^1,2, 潘凯¹, 周秀艳¹

1. 东北农业大学, 哈尔滨 150030;
2. 东北农业大学, 哈尔滨 150030

收稿日期:2003-07-23 修回日期:2003-12-21 出版日期:2005-05-15 发布日期:2005-05-15
通讯作者: 吴凤芝,女,1963年12月生,博士,教授.主要从事蔬菜生理生态和设施园艺工程技术研究,发表论文多篇.Tel:0451-55190278;E-mail:feng4862@sina.com
基金资助:
国家自然科学基金资助项目(30070430).

Effects of cinnamic acid on physiological characteristics of Cucumis sativus seedling

^1,2

1. Northeast Agricultural University, Harbin 150030, China;
2. Northeast Forestry University, Harbin 150040, China

Received:2003-07-23 Revised:2003-12-21 Online:2005-05-15 Published:2005-05-15

摘要/Abstract

摘要： 采用基质栽培模拟实验,研究了不同浓度苯丙烯酸对黄瓜幼苗生理特性的影响.结果表明,苯丙烯酸对黄瓜幼苗的光合色素、光合速率、蒸腾速率和根系活力产生了抑制作用.当处理浓度为25μmol·L^-1时,对类胡萝卜素产生抑制作用,对叶绿素a、叶绿素b为促进作用;当浓度为50μmol·L^-1时,对光合速率、蒸腾速率和根系活力均产生显著的抑制作用(P<0.05),并随着处理浓度的增加抑制作用增强;当浓度为150μmol·L^-1时,对叶绿素a、叶绿素b产生显著抑制作用(P<0.05);随着处理浓度的增加,对黄瓜上述生理特性的抑制作用增强.低浓度苯丙烯酸(25～50μmol·L^-1)对幼苗根系活力的抑制强度不大,可在处理后期得到恢复;高浓度(100～150μmol·L^-1)处理则表现出显著的抑制作用,随着处理时间延长,抑制作用增强(P<0.05).

关键词: 苯丙烯酸, 化感作用, 光合速率, 蒸腾速率, 黄瓜根系活力

Abstract: With substrate culture,this paper studied the effects of different concentrations of cinnamic acid on the physiological characteristics of Cucumis sativus seedling.The results showed that 25 μmol·L^-1 of cinnamic acid had an inhibition effect on carotenoids,but a promotion effect on chlorophyll a and b.50 μmol·L^-1 of this compound could significantly inhibit the photosynthetic rate,transpiration rate and root activity (P<0.05),and this effect was getting stronger when the concentration was higher.150 μmol cinnamic acid·L^-1 had a significant inhibition effect on chlorophyll a and b (P<0.05).Cinnamic acid had a weak inhibition effect on root activity when its concentration was low(25～50 μmol ·L^-1),but the effect was significant when the concentration was high (100～150 μmol·L^-1),which became stronger with the longer handling time (P<0.05).

Key words: Cinnamic acids, Allelopathy, Photosynthetic rate, Cucumis sativus, Transpiration rate, Root activity

中图分类号:

Q945

吴凤芝, 潘凯, 周秀艳. 苯丙烯酸对黄瓜幼苗生理特性的影响[J]. 应用生态学报, 2005, 16(5): 915-918.

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