山东农业科学2026，Vol.58Issue(1)：54-60,7.DOI:10.14083/j.issn.1001-4942.2026.01.007
外源虾青素对盐胁迫下萝卜种子萌发和芽苗生长的影响
Effects of Exogenous Astaxanthin on Seed Germination and Seedling Growth of Radish under Salt Stress
摘要
Abstract
In order to explore the effect of exogenous astaxanthin(As)on radish seed germination and seedling growth under salt stress,this experiment used Jinluobo 3 as experimental material to study the effects of soaking seed with different concentrations(0.05,0.1,0.3,0.5 g/L and 1.0 g/L)of As on radish seed ger-mination and seedling growth under 150 mmol/L NaCl stress,using treatment with distilled water as control(CK).The results showed that with the increase of As concentration,the germination rate,germination poten-tial,germination index and vigor index of radish seeds under salt stress showed a trend of first increasing and then decreasing.Among them,soaking seed with 0.1 g/L As(NaCl+0.1As),the seed germination rate,ger-mination potential,germination index and vigor index were increased by 9.4%,29.3%,20.5%and 78.4%,respectively,compared with the NaCl treatment,and the relative salt injury rate was significantly reduced by 71.5%.The NaCl+0.1As treatment also significantly promoted seedling growth,and the single plant fresh weight,shoot height and root length increased by 33.8%,65.2%and 86.9%,respectively,compared with NaCl treatment.Compared with CK,NaCl treatment significantly promoted the accumulation of hydrogen per-oxide(H2 O2)and malondialdehyde(MDA)in seedling leaves and reduced cell activity of root tips,resulting in aggravated oxidative damage.The treatment with appropriate concentration of astaxanthin significantly in-creased the contents of soluble protein,phenolic compounds,ascorbic acid and glutathione in seedlings,en-hanced antioxidant activity and reduced oxidative damage caused by salt stress,among which,NaCl+0.1As treatment showed the best alleviating effect.In conclusion,exogenous As could effectively alleviate the oxida-tive damage of salt stress to radish germination and seedling growth,promote seed germination and seedling growth,and improve salt tolerance of radish seedlings.The results of this study could provide a certain theoret-ical and technical support for the application of As to improve radish resistance to salt stress.关键词
虾青素/萝卜/盐胁迫/种子萌发/芽苗生长/抗氧化系统Key words
Astaxanthin/Radish/Salt stress/Seed Germination/Seedling growth/Antioxidant system分类
农业科技引用本文复制引用
焦阳,林子坤,徐嘉欣,许家磊,吕昊峰,梁斌,周伟伟..外源虾青素对盐胁迫下萝卜种子萌发和芽苗生长的影响[J].山东农业科学,2026,58(1):54-60,7.基金项目
国家自然科学基金项目(32302661) （32302661）
青岛农业大学高层次人才引进基金项目(663/1120106) （663/1120106）
