ZHANG Xuan,YANG Gaier,WANG Jiadong,et al.Effects of Different Light Intensities on Growth，Antioxidant Activity，and Bioactive Compounds in Lycium barbarum[J].Northern Horticulture,2026,(5):78-87.[doi:10.11937/bfyy.20253184]
不同光照强度对枸杞苗期生长、抗氧化活性及活性成分的影响
- Title:
- Effects of Different Light Intensities on Growth，Antioxidant Activity，and Bioactive Compounds in Lycium barbarum
- 文章编号:
- 1001-0009(2026)05-0078-10
- 分类号:
- S567.19
- 文献标志码:
- A
- 摘要:
- 以‘宁杞10号’枸杞幼苗为试材，采用不同光照强度（1 000、3 000、8 000 lx和20 000 lx）处理枸杞幼苗，研究了苗期枸杞在不同光强下的生理适应机制及其次生代谢产物的调控规律，以期为光强调控枸杞栽培提供参考依据。结果表明：8 000 lx光强下枸杞幼苗的株高、茎粗和叶宽达到最大值，20 000 lx光强下的根长、根粗及主根数显著优于其他处理。光合色素含量随光强增加呈下降趋势，其中1 000 lx下叶绿素a、叶绿素b和类胡萝卜素含量最高。超氧化物歧化酶（SOD）、过氧化氢酶（CAT）活性及丙二醛（MDA）含量随光强的增强而增加，20 000 lx时达到峰值；过氧化物酶（POD）活性则在8 000 lx时最高。1 000 lx光强下甜菜碱含量最低，3 000 lx光强下多糖含量最高，20 000 lx光强更有利于类黄酮的积累。适度的强光（8 000 lx）有利于枸杞苗的形态生长，高光强（20 000 lx）更利于根系生长和类黄酮合成。
- Abstract:
- Taking ‘Ningqi 10’ Lycium barbarum seedlings as the test materials，the seedlings were subjected to different light intensities (1 000，3 000，8 000 lx and 20 000 lx),the physiological adaptation mechanisms and regulatory patterns of secondary metabolites in Lycium barbarum plants under varying light intensities were investigated,in order to provide reference for light-strength regulation in goji cultivation.The results showed that under 8 000 lx light intensity，plant height，stem diameter，and leaf width of wolfberry seedlings reached their maximum values，while root length，root diameter，and the number of primary roots under 20 000 lx were significantly superior to those in other treatments.Photosynthetic pigment content exhibited a decreasing trend with increasing light intensity，with chlorophyll a，chlorophyll b，and carotenoid content being the highest under 1 000 lx.The activities of superoxide dismutase (SOD)，catalase (CAT)，and content of malondialdehyde (MDA) increased with higher light intensity，peaking at 20 000 lx；peroxidase (POD) activity，however，was highest at 8 000 lx.The lowest betaine content was observed at 1 000 lx light intensity，while the highest polysaccharide content was recorded at 3 000 lx.Light intensity of 20 000 lx further promoted flavonoid accumulation.Moderate high light (8 000 lx) favored morphological growth of Lycium barbarum seedlings.High light intensity (20 000 lx) further promotes root development and flavonoid synthesis.
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备注/Memo
第一作者简介：张璇（2002-），女，硕士研究生，研究方向为林木遗传育种。E-mail：zhangxuan2024zx@163.com.责任作者：李翔（1993-），男，博士，副教授，现主要从事林木诱变育种、倍性育种、高效栽培和林木环境响应分子机制等研究工作。E-mail：lixiangphd@nxu.edu.cn.基金项目：宁夏重点研发计划资助项目（引才专项2024BEH04068）；宁夏自然科学基金资助项目（2023AAC05025）。收稿日期：2025-09-05