四川农业大学学报2025，Vol.43Issue(3)：572-580,9.DOI:10.16036/j.issn.1000-2650.202412505
基于光合特性的不同大豆品种弱光适应性分析
Analysis of the Low-Light Adaptability in Different Soybean Varieties Based on Photosynthetic Characteristics
摘要
Abstract
[Objective]To evaluate the photosynthetic and chlorophyll fluorescence adaptability of 18 soybean varieties under low-light conditions and provide a theoretical basis for selecting superior cultivars suitable for intensive planting and strip intercropping.[Method]Eighteen soybean varieties were cultivated under low-light intensity[200 μmol/(m2·s)]with conventional management.Photosyn-thetic physiological traits and chlorophyll fluorescence parameters were measured to assess low-light adaptability.Varieties were ranked using the Technique for Order Preference by Similarity to Ideal Solution(TOPSIS)and classified into three groups via cluster analysis.Key indicators included initial fluorescence(F0),maximum fluorescence(Fm),maximum photochemical efficiency(Fv/Fm),ac-tual photosynthetic efficiency of photosystem Ⅱ[Y(Ⅱ)],non-photochemical quenching coefficient(NPQ),photochemical quenching coefficient(qp),transpiration rate(E),intercellular CO2 concentra-tion(Ci),stomatal conductance(Gs),and net photosynthetic rate(Pn).[Result]Under low light:E338 exhibited the highest transpiration rate(E),Sai Feng No.1 Yuan Xi the highest Pn,E72 the highest Ci,Gong Xuan No.1 the highest Gs,Heidou-1 the highest F0,Nan F7256-3 the highest maximum fluorescence(Fm)and Fv/Fm,HY024 the highest NPQ,C-50 the highest qp,and E-95 the highest Y(Ⅱ).Through correlation analysis,it was found that there was a significant positive correlation(P<0.05)between Fm and Y(Ⅱ),E and Gs,and an extremely significant positive correlation(P<0.01)between Fm and Ci;there was an extremely significant positive correlation(P<0.01)between Fv/Fm and E,Gs,and a significant positive correlation(P<0.05)between Fv/Fm and Pn.TOPSIS ranking identified A-96,Nan F7256-3,and Gui Xia No.7 as the top three varieties for low-light adaptability.[Conclusion]Cluster analysis classified the 18 varieties into:strong adaptability(SA,8 varieties):①Gui Xia No.7,Gong Xuan No.1,Nan F7256-3,A-96,E-95,Dong Huang Dou,E72,and E338;②Medium adaptability(MA,6 varieties):Xia Hei Dou-3,C-50,E19,A-38,Gong Qiu Dou 109,and E343;③Weak adaptability(LA,4 varieties):Heidou-1,Lanyadou-5,Sai feng No.1 Yuan Xi,HY024.These results provide a scientific basis for selecting low-light-tolerant soybean varieties for sus-tainable agricultural practices.关键词
大豆/光合特性/弱光适应性/TOPSIS分析方法Key words
soybeans/photosynthesis characteristics/low-light adaptation/TOPSIS analysis method分类
农业科技引用本文复制引用
张益涵,杨亚南,王琪,王静茹,武晓玲,杨峰,杨文钰..基于光合特性的不同大豆品种弱光适应性分析[J].四川农业大学学报,2025,43(3):572-580,9.基金项目
广西重点研发计划项目(桂科AB23026107). （桂科AB23026107）
