| 王茂胜1,2袁李明3袁杨秀祥3袁汪汉成2袁邱忠智4袁蒋选利1.酚酸对烟苗根系生长及叶片光合特性的影响[J].广东农业科学,2014,41(2):14-18 |
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酚酸对烟苗根系生长及叶片光合特性的影响 |
| Effect of phenolic acid on the root growth and photosyntheticcharacteristics of tobacco seedling |
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| DOI： |
| 中文关键词: 烤烟 根系提取物 自毒作用 化感作用 酚酸 |
| 英文关键词: flue cured tobacco root extract autotoxicity allelopathy phenolic acid |
| 基金项目:国家自然科学基金31360448中国烟草总公
司贵州省烟草公司项目201305,201232 ,201018,201336中国
烟草总公司项目(11020100219) |
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| 摘要点击次数: 1869 |
| 全文下载次数: 668 |
| 中文摘要: |
| 为了解酚酸类他感物质对烟苗生长发育的影响研究了苯甲酸对羟基苯甲酸和水杨酸对烟苗根系发
育气体交换特征叶绿素荧光参数及叶绿素含量的影响结果表明3 种酚酸随着浓度的增加烟苗叶片叶绿素含量
SPAD 值均呈先增加后降低趋势3 种酚酸能够显著抑制烟苗根系发育，随着浓度增加，根尖数、总根长和总根表面
积呈先升后降或直接降低的趋势3 种酚酸能够降低净光合速率(Pn)苯甲酸差异不显著3 种酚酸对叶绿素荧光参
数均有影响随着浓度的增加Fv/Fm 有降低趋势，但差异不显著qp 和囟PSII 呈显著下降趋势NPQ 呈显著升高趋
势本试验证明了3 种酚酸对烟苗根系发育光合作用有抑制作用。 |
| 英文摘要: |
| In order to investigate the influence of phenolic allelochemicals on the growth and development of tobacco
seedlings, effect of benzoic acid, p-hydroxy benzoic acid and salicylic acid on seedling root growth, characteristics of gas
exchange, chlorophyll fluorescence parameters and chlorophyll content of tobacco were analyzed in this study. Result
showed that chlorophyll content of seedling leaf (SPAD value) first increased and then decreased with the enhancement of
the three phenolic acids; Three phenolic acids all significantly inhibited the growth of tobacco seedling root, such as tip
number, total root length and total root surface area, which showed the trend of first increased and then decreased or
decreased directly; three phenolic acids all decreased the net photosynthetic rate (Pn), there was no significant difference in
the treatment of benzoic acid; three phenolic acids all had effect on chlorophyll fluorescence parameters, the Fv/Fm value
decreased with the increasing of concentrations, while with no significant difference, qP and PSII values significantly
decreased. Our study exhibited that all three phenolic acids inhibited the developing of tobacco seedlings and the
photosynthesis activity of tobacco plant. |
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