摘要
In this study, several general y reported exogenous phenolic acids were selected as regents for potting experiments, aiming at revealing the effects of differ-ent concentrations of exogenous phenolic acids on the growth and development of soybean seedlings. The growth and development indicators of soybean seedlings treated with five different concentrations of exogenous phenolic acids, such as plant height, leaf area, root nodule number and root-shoot ratio, were determined and compared. According to the experimental results, three exogenous phenolic acids with different concentrations exhibited slight effects on plant height of potted soy-bean seedlings. The leaf area of potted soybean seedlings treated with 1.0 g/kg benzoic acid and cinnamic acid varied extremely significantly compared with the control. Root nodule number of potted soybean seedlings treated with 1.0 g/kg ben-zoic acid and vanil ic acid increased remarkably, but 1.0 g/kg cinnamic acid had lit-tle effects on root nodule number. When the concentration of phenolic acids was 1.0 g/kg, three phenolic acids exhibited the maximum effects on root-shoot ratio of potted soybean seedlings. Overal , low concentrations of exogenous phenolic acids exhibited no significant effects on the growth and development of potted soybean seedlings; high concentrations of exogenous phenolic acids inhibited the growth and development of potted soybean shoots, increased root nodule number and improved root-shoot ratio.
以普遍报道的几种外源酚酸为试剂,通过盆栽实验,旨在探讨不同浓度外源酚酸对苗期大豆生长发育的影响。通过设置5种不同浓度外源酚酸的盆栽试验,测定不同浓度外源酚酸对盆栽大豆苗期生长发育指标影响。结果表明不同浓度3种外源酚酸对苗期大豆株高的影响总体较小。1.09 g/kg苯甲酸处理和肉桂处理的苗期大豆叶面积与对照差异达到极显著水平。1.09 g/kg苯甲酸处理和香草酸处理均显著增加了盆栽大豆根瘤数,肉桂酸影响较小。1.09 g/kg不同浓度3种酚酸对盆栽大豆根冠比影响最大。总体上,低浓度外源酚酸对盆栽大豆生长发育影响效果不显著;高浓度外源酚酸抑制了盆栽大豆地上部分生长发育,增加了盆栽大豆根瘤数和提高了盆栽大豆根冠比。
基金
Supported by the Scientific Research Fund for Innovative Research Team of Colleges and Universities in Liaoning Province(2009T088)~~
