CUI Xiaohan,PAN Lu,CUI Shimao,et al.Effects of High Temperature and CO2 Enrichment on Diurnal Variation of Photosynthesis and Stomatal Movement in Cucumber[J].Northern Horticulture,2022,(24):11-17.[doi:10.11937/bfyy.20221968]
高温、CO2加富对黄瓜光合作用及气孔运动日变化的影响
- Title:
- Effects of High Temperature and CO2 Enrichment on Diurnal Variation of Photosynthesis and Stomatal Movement in Cucumber
- 文献标志码:
- A
- 摘要:
- 以温室嫁接黄瓜为试材，设置高温、高温+CO2加富、常温+CO2加富及对照4个处理，研究了不同处理下温室黄瓜叶片光合作用及气孔运动日变化规律，以期为后续气孔运动调节机制的研究提供参考依据。结果表明：10:00—16:00期间，高温+CO2加富处理下的黄瓜叶片净光合速率、气孔导度、胞间CO2浓度及气孔开度均显著高于对照。高温处理下的净光合速率显著低于对照，常温+CO2加富处理虽使净光合速率提高但差异不显著。高温与CO2加富共同作用可促进黄瓜叶片气孔开放并显著提高其光合作用，而单纯高温处理或CO2加富效果不明显。
- Abstract:
- Grafted cucumber in greenhouse was used as the test materials,and there were four treatments were set,including high temperature,high temperature+CO2 enrichment,normal temperature+CO2 enrichment and normal cultivation as the control.The diurnal variation of photosynthesis and stomatal movement of cucumber leaves under different treatments in greenhouse were studied,in order to provide reference for the subsequent study of stomatal movement regulation mechanism.The results showed that from 10:00 to 16:00,the net photosynthetic rate,stomatal conductance,intercellular CO2 concentration and stomatal aperture of cucumber leaves under high temperature+CO2 enrichment were significantly higher than those of the control.The net photosynthetic rate under high temperature was significantly lower than that under control,while the net photosynthetic rate under normal temperature+CO2 enrichment increased but the difference was not significant.The combination of high temperature and CO2 enrichment could promote stomatal opening and significantly improve photosynthesis of cucumber leaves,but the effect of simple high temperature or CO2 enrichment was not obvious.
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备注/Memo
第一作者简介：崔晓晗（1995-），女，硕士研究生，研究方向为设施蔬菜栽培生理与环境调控。E-mail：1207301978@qq.com.责任作者：宋阳（1982-），男，博士，副教授，现主要从事设施蔬菜栽培生理与环境调控等研究工作。E-mail:dbmsy@sina.cn.基金项目：国家自然科学基金资助项目（31860573）；内蒙古自然科学基金资助项目（2019BS03013）；“科技兴蒙”行动重点专项资助项目（KJXM-EEDS-2020008）；内蒙古自治区科技重大专项资助项目（2019ZD007）。收稿日期：2022-05-12