ZHOU Xin-gang,WU Feng-zhi.Effect of Exogenous Vanillin on Cucumber Seedling Growth and Soil Microorganisms[J].Northern Horticulture,2015,39(01):1-4.[doi:10.11937/bfyy.201501001]
外源香草醛对黄瓜幼苗生长及土壤微生物的影响
- Title:
- Effect of Exogenous Vanillin on Cucumber Seedling Growth and Soil Microorganisms
- Keywords:
- Keywords: Cucumis sativus L. FONT-SIZE: 10pt">Keywords: Cucumis sativus L. ' target="_blank" rel="external"> FONT-SIZE: 10pt">; autotoxicity FONT-SIZE: 10pt">autotoxicity ' target="_blank" rel="external"> FONT-SIZE: 10pt">; vanillin FONT-SIZE: 10pt">vanillin ' target="_blank" rel="external"> FONT-SIZE: 10pt">; soil microorganisms' target="_blank" rel="external"> FONT-SIZE: 10pt">soil microorganisms
- 文献标志码:
- A
- 摘要:
- 摘 要:植物可以通过根系分泌、残茬降解等方式释放酚类化合物到土壤中，从而对自身或其它植物产生直接或间接的影响；但酚类化合物对土壤微生物的影响目前尚不十分清楚。该试验以“津绿3号”黄瓜品种为试材，通过外源添加在黄瓜连作体系中测得浓度的香草醛，研究了其对黄瓜幼苗生长及土壤微生物的影响。结果表明: 外源香草醛影响了黄瓜幼苗生长及土壤微生物活性；在培养皿中，0.25～1.00 mmol/L香草醛溶液处理显著抑制了黄瓜种子胚根伸长(P<0.05)；在土壤条件下，0.05～0.20 μmol/g土香草醛处理显著抑制了黄瓜幼苗株高及叶面积(P<0.05)；同时，所有浓度的香草醛处理(0.02～0.20 μmol/g土)均显著提高了土壤脱氢酶活性和土壤微生物生物量碳含量(P<0.05)；总之，外源香草醛能同时抑制黄瓜幼苗生长并促进土壤微生物活性。
- Abstract:
- Abstract:Phenolic compounds,which enter soil as a result of root exudation and residue decomposition,can directly and indirectly affect the growth of their own or other plants.However,the effect of phenolic compounds on soil microorganisms are still not clear.In the present study,taking ‘ Jinlyu No. 3 ’ cucumber as material,the effect of exogenous vanillin at the concentration detected in a continuously monocropped cucumber system were investigated.The results showed that exogenous vanillin significantly affected cucumber seedling growth and soil microbial activity ( P <0. 01).In the Petri dish experiment,vanillin significantly inhibited cucumber radicle elongation at concentration of 0. 25 to 1. 00 mmol/L ( P <0. 05).In the soil,vanillin significantly inhibited cucumber plant height and leaf area at concentration of 0. 05 to 0. 20 μ mol/g soil ( P <0. 05).Meanwhile,all concentrations of vanillin applied (0. 02 to 0. 20 μ mol/g soil) significantly increased soil dehydrogenase activity and soil MBC content ( P <0. 05).Overall,the results showed that vanillin could inhibit cucumber seedling growth,and promote soil microbial activity and soil MBC content.
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备注/Memo
第一作者简介：周新刚（1984-），男，博士，研究方向为设施蔬菜生理生态。E-mail：zxg2025@163.com.
责任作者：吴凤芝（1963-），女，博士，教授，研究方向为设施蔬菜生理生态。E-mail：fzwu2006@aliyun.com.