光周期对蓝莓叶片气孔特征和光合特性的影响

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关键词：蓝莓；光周期；光合特性；叶绿素荧光

中图分类号：S662.3 文献标志码：A 文章编号：1008-1038（2025）07-0026-10

DOI：10.19590/j.cnki.1008-1038.2025.07.005

TheEffectofPhotoperiodon theStomatal Characteristics andPhotosynthesisofBlueberryLeaves

SHI Chengjing， FU Hao， LIANG Zhenglan， LI Benyin， LOU Xin* （School of Life and Health， Dalian University，Dalian 116622， China）

Abstract：To explore the influence of photoperiod onthephotosynthetic characteristicsand chlorophyl fluorescence parameters ofblueberyplants，and screen thephotoperiod parametersthat facilitate photosynthesis in blueberry seedlings，using‘Aurora’and‘Cooper’as experimental materials，with a 10h/14 h photoperiodasthecontrol，fourdierentphotoperiodtreatments wereset（14h/10h，18h/6h，22h/2h，24h/h）. Thestomatal characteristics，photosynthetic characteristics，andchlorophyll fluorescence parametersof blueberry leaves under each treatment were measured. The results showed that under the 14h/10h （20 photoperiod treatment，thestomatal index and photosynthetic characteristics of blueberres were significantly higher than those under other photoperiod treatments.The PSII maximum photochemical efficiency and photoprotection abilityof the continuous light treatment blueberies were slightly lower，and continuous light treatment for7d would cause a decrease in the bluebery plant’sphotosynthesis rate and diferent degrees of photoinhibition.The optimal light cycle for blueberry growth was 14h/10 h of darkness.

Keywords：Blueberries;photoperiod;photosynthetic characteristics;chlorophyllfluorescence

光是影响植物生长发育的关键环境因子之一，也是植物进行光合作用的重要能量来源，影响植物的形态和物质代谢2。（剩余12612字）