南京林业大学学报（自然科学版）2024，Vol.48Issue(2)：105-112,8.DOI:10.12302/j.issn.1000-2006.202303030
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
摘要
Abstract
[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 CO2 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 treatment were significantly higher than that under W treatment,while contents under R treatment were on the contrary(P＜0.05).The flavonoid yield of G.biloba single plant was also determined,and it was found that the falvonoid yield under B treatment was increased 75.65％than that under W treatment.[Conclusion]Light quality treatment affects the growth and significant increase the accumulation of flavonoids of G.biloba,B and M treatment are ideal light quality.The results can provide theoretical basis for the application of light quality in the cultivation of G.biloba.关键词
银杏/光质/生长特征/形态建成/光合特性/总黄酮Key words
Ginkgo biloba/light quality/growth characteristics/morphogenesis/photosynthetic characteristics/total flavonoid分类
农业科技引用本文复制引用
王改萍,章雷,曹福亮,丁延朋,赵群,赵慧琴,王峥..红蓝光质对银杏苗木生长生理特性及黄酮积累的影响[J].南京林业大学学报（自然科学版）,2024,48(2):105-112,8.基金项目
江苏省科技计划(资金)项目(BE2021367) （资金）
江苏高校优势学科建设工程资助项目(PAPD). （PAPD）
