江西农业大学学报2026，Vol.48Issue(1)：41-55,15.DOI:10.3724/aauj.2026005
光周期对烟苗农艺性状与光合生理指标的影响
Effect of photoperiod on agronomic traits and photosynthetic physiological indexes of tobacco seedlings
摘要
Abstract
[Objective]To investigate the effects of different photoperiod treatments on agronomic traits and photosynthetic physiological indexes of tobacco seedlings,and to provide a theoretical basis for the optimization of the light environment in the tobacco seedling stage.[Method]The seedlings of Zhongyan 100,K326,Yunyan 87 and CB-1 were treated with three photoperiods of 6 h,10 h and 14 h from the small cross stage to the five-leaf and one-beart stage.The experiment was conducted in a two-factor split-plot experimental design,with photoperiod treatments as the main factor and varieties as the subfactors.The entropy value method was used to analyze the photoperiod sensitivity of the agronomic traits of tobacco seedlings,to determine the chlorophyll content,and to analyze the energy distribution characteristics of PSII(photosystem II)using OJIP(fast chlorophyll fluorescence induction kinetics)curves,and to carry out the correlation analysis between the agronomic traits and photosynthesis physiological indexes.[Result]①With the extension of light duration,the agronomic traits indicators of the four varieties of tobacco seedlings showed an increasing trend.②With the extension of light time,the chlorophyll content of all four varieties showed an increasing trend.③With the extension of light duration,ABS/RC(light energy absorbed per unit reaction center),TRO/RC(energy captured per unit reaction center for reduction of primary electron acceptor QA),ETO/RC(energy captured per unit reaction center for electron transfer),and DIO/RC(energy dissipated per unit reaction center)of the four varieties of tobacco seedlings gradually decreased,and RS/CSO(number of reaction centers per unit area)gradually increased,and PIABS(performance index based on absorbed light energy)gradually increased.④The agronomic traits of tobacco seedlings under different photoperiodic treatments showed significant positive correlations with chlorophyll content and RS/CSO,and significant negative correlations with ETO/RC,DIO/RC,ABS/RC and TRO/RC.[Conclusion]Under the treatment of 6-14 h of light time,the extension of light time can significantly promote the growth and photosynthesis of tobacco seedlings.Correlation analysis shows that the extended light time promotes chlorophyll synthesis and light reaction process,improves light energy utilization efficiency and promotes the growth of tobacco seedlings.关键词
烟草/光周期/农艺性状/光合生理/叶绿素/OJIP曲线Key words
tobacco/photoperiod/agronomic traits/photosynthetic physiology/chlorophyll/OJIP curve分类
农业科技引用本文复制引用
尹海静,李相潼,战徊旭,赵书坤,刘光亮,陈爱国..光周期对烟苗农艺性状与光合生理指标的影响[J].江西农业大学学报,2026,48(1):41-55,15.基金项目
中国农业科学院科技创新工程项目(ASTIP-TRIC03) Project supported by Science and Technology Innovation Project of CAAS(ASTIP-TRIC03) 福建省烟草公司南平市公司项目(2023350700240134)和贵州省烟草公司毕节市公司项目(2024520500240068)同时对本研究给予了资助,谨致谢意! （ASTIP-TRIC03）
