红蓝光质对银杏苗木生长生理特性及黄酮积累的影响  

Effect of red and blue light quality on growth physiological and flavonoid content of Ginkgo biloba seedlings

作　　者：王改萍[1] 章雷 曹福亮[1,2] 丁延朋 赵群 赵慧琴[1] 王峥 WANG Gaiping;ZHANG Lei;CAO Fuliang;DING Yanpeng;ZHAO Qun;ZHAO Huiqin;WANG Zheng(Co-Innovation Center for Sustainable Forestry in Southern China,College of Forestry and Grassland,Nanjing Forestry University,Nanjing 210037,China;Jiangsu Vocational College of Agriculture and Forestry,Zhenjiang 212400,China;Fujian Forestry Prospect and Design Institute,Fuzhou 350001,China)

机构地区：[1]南京林业大学林草学院,南方现代林业协同创新中心,江苏南京210037 [2]江苏农林职业技术学院,江苏镇江2212400 [3]福建省林业勘察设计院,福建福州350001

出　　处：《南京林业大学学报（自然科学版）》2024年第2期105-112,共8页Journal of Nanjing Forestry University：Natural Sciences Edition

基　　金：江苏省科技计划(资金)项目(BE2021367);江苏高校优势学科建设工程资助项目(PAPD)。

摘　　要：【目的】探究红、蓝光质对银杏(Ginkgo biloba)苗木生长特征、形态建成和次生代谢物积累的影响,为银杏苗木选择适宜光环境,提高叶用品质研究提供理论依据。【方法】选择1年生银杏幼苗为材料,采用发光二极管(LED)调制光源,设置红光(R)、蓝光(B)和红蓝光度比1∶1的混光(M)3个处理,以白光(W)为对照,研究红光和蓝光对银杏幼苗生长生理、光合效能及黄酮等积累的影响。【结果】B处理可显著提高银杏苗高(P<0.05),R、M处理下苗高低于W;R、B、M处理下,银杏苗木叶生物量、总生物量及叶质量比均低于W处理;R、M处理有利于银杏生物量向根部分配,B处理则有利于生物量向茎部分配。R、B、M处理对银杏叶片形态建成作用显著,叶宽、叶面积均低于W处理;R处理促进银杏苗木叶柄显著性伸长(P<0.05)。M、B处理可显著提高银杏总叶绿素及类胡萝卜素含量,且随着光质处理时间延长,叶片叶绿素含量呈增加趋势,R处理对光合色素积累起抑制作用;R、B、M处理下,银杏苗木净光合速率(Pn)、蒸腾速率(Tr)、气孔导度(Gs)均在84 d时达到最大值,胞间CO_(2)浓度(Ci)在不同处理下变化幅度较小。R、B、M处理下,银杏Pn、Tr显著低于W处理(P<0.05);Gs也在M、B处理下低于W处理。银杏叶中总黄酮含量从大到小在不同处理时期均表现为:B>M>W>R,且B、M显著高于W,R则相反(P<0.05);对银杏单株黄酮产量的测定,也发现B处理下黄酮产量相对W的提高了75.65%。【结论】光质处理影响银杏生长,显著提高黄酮积累,蓝、红蓝混光是较为理想的光质。研究结果可为光质在叶用银杏栽培上的推广应用提供理论依据。【Objective】This research aims to explore the effects of red and blue light quality on growth characteristics,morphogenesis and accumulation of secondary metabolites of Ginkgo biloba seedlings,in order to provide theoretical basis for selecting suitable light environment and improving leaf quality of G.biloba seedlings.【Method】Taking 1-year-old seedlings of G.biloba as materials,under LED conditions,three different light qualities were set,namely red light(R),multiple light(light intensity ratio of red to blue is 1∶1,M)and blue light(B),and white light(W)was used as control to explore the dynamic change rule of growth physiology,photosynthetic capacity and flavonoids accumulation.【Result】B treatment significantly increased the seedling height(P<0.05),and which of the R and M treatment was lower than W(CK).The leaves biomass,total biomass and leaves mass ratio of G.biloba seedlings under different light quality were lower than W(CK).R and M treatment were beneficial to the distribution of the biomass to the root,while B treatment was beneficial to the distribution of biomass to the stem.The leaves morphogenesis was significantly affected by different light quality,and the leaves width and area were lower than W(CK).R treatment significantly extended the petiole(P<0.05).M and B treatment significantly increased the contents of total chlorophyll and carotenoid,while R treatment had the opposite effect,and chlorophyll content increased with the extension of light treatment time.Under different light quality,net photosynthetic rate(Pn),transpiration rate(Tr)and stomatal conductance(Gs)of G.boloba seedling reached the maximum value at 84 days,and intercellular CO_(2) concentration(Ci)changed little under different treatments.In the same treatment group,Pn and Tr were significantly lower than W(P<0.05),Gs under M and B treatment is also lower than that under W treatment.The contents of total flavonoids in G.biloba leaves were B,M,W,R treatment from high to low,and contents of total flavonoids under B and M

关 键 词：银杏 光质 生长特征 形态建成 光合特性 总黄酮 

分 类 号：S722[农业科学—林木遗传育种] Q945[农业科学—林学]