中国农业科学2026，Vol.59Issue(7)：1523-1535,13.DOI:10.3864/j.issn.0578-1752.2026.07.011
苗期施用褪黑素对番茄短期低温胁迫的缓解作用与应用效果评价
Evaluation of the Mitigating Effect and Application Efficacy of Melatonin Applied at the Seedling Stage on Short-Term Chilling Stress in Tomato Plants
摘要
Abstract
[Objective]To address the short-term chilling stress that frequently occurs in horticultural facilities under adverse meteorological conditions,this study investigated the impact of exogenous melatonin on the cold resistance of tomatoes in facilities,aiming to provide a theoretical basis for the application of melatonin in production.[Method]Seedlings of Solanum lycopersicum cv.'Hezuo909'were used as the experimental material and treated with either clear water or 200 μmol·L-1 melatonin solution via root irrigation.Five days after treatment,half of the seedlings from each group were subjected to low-temperature stress(12℃/7℃,day/night)for 12 days,while the remaining seedlings were maintained under normal temperature conditions.During the treatment period,morphological traits,chlorophyll fluorescence parameters,photosynthetic pigment contents,and mineral element concentrations were measured in each treatment group.After the 12-day temperature treatment at the seedling stage,all seedlings were transplanted into a solar greenhouse with uniform growth conditions,and subsequent monitoring was conducted for morphological parameters,phenological stages,yield components,and fruit quality attributes.[Result]Chilling during the seedling stage led to a decrease in the content of photosynthetic pigments in tomato seedling leaves,a weakening of photosynthetic performance,hindered absorption of mineral elements,and inhibited plant growth.The impact of chilling during the seedling stage persists throughout the entire growth period,resulting in a prolonged lag in growth rate of tomato plants after transplanting compared to the control group under normal temperature,extended phenological phases,and reduced yield.The exogenous application of melatonin enhanced the absorption capacity of N,P,K,and Fe elements in tomato seedlings,mitigated the decline in photosynthetic pigment levels,maintained the photosynthetic performance of the leaves,and significantly alleviated the inhibitory effect of chilling on the growth of tomato seedlings.Additionally,the application of melatonin promotes the recovery and growth of tomato seedlings after transplanting.[Conclusion]Chilling during the seedling stage inhibited the growth of tomato seedlings,and the adverse effects persisted throughout the entire growth period after transplanting.The application of melatonin effectively mitigated the adverse effects of chilling on the growth and development of tomatoes by regulating nutrient uptake and maintaining the photosynthetic performance of leaves.关键词
番茄/低温/褪黑素/光合性能/物候期/产量Key words
tomato/chilling stress/melatonin/photosynthetic property/phenological phase/yield引用本文复制引用
王玉萍,符质,孙佳莹,穆晓萌,刘慧淋,郭进云,宋文菁,侯雷平,赵海亮..苗期施用褪黑素对番茄短期低温胁迫的缓解作用与应用效果评价[J].中国农业科学,2026,59(7):1523-1535,13.基金项目
山西省基础研究计划(202403021211202)、山西省重点研发计划(202102140601013)、国家自然科学基金(32472822)、山西省三区科技人才项目(SXND202521370) （202403021211202）
