中国农业科学 ›› 2026, Vol. 59 ›› Issue (7): 1523-1535.doi: 10.3864/j.issn.0578-1752.2026.07.011

• 园艺 • 上一篇    下一篇

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

王玉萍1,2(), 符质1, 孙佳莹1, 穆晓萌1, 刘慧淋1, 郭进云1, 宋文菁1, 侯雷平1, 赵海亮1,3,*()   

  1. 1 山西农业大学园艺学院/设施园艺山西省重点实验室, 山西太谷 030801
    2 山西农业大学教务部实验教学中心, 山西太谷 030801
    3 山西省博士创新站, 山西榆次 030600
  • 收稿日期:2025-11-11 接受日期:2026-01-09 出版日期:2026-04-08 发布日期:2026-04-08
  • 通信作者:
    赵海亮,E-mail:
  • 联系方式: 王玉萍,E-mail:yupinghigh@126.com。
  • 基金资助:
    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)

Evaluation of the Mitigating Effect and Application Efficacy of Melatonin Applied at the Seedling Stage on Short-Term Chilling Stress in Tomato Plants

WANG YuPing1,2(), FU Zhi1, SUN JiaYing1, MU XiaoMeng1, LIU HuiLin1, GUO JinYun1, SONG WenJing1, HOU LeiPing1, ZHAO HaiLiang1,3,*()   

  1. 1 College of Horticulture, Shanxi Agricultural University/Shanxi Key Laboratory of Protected Horticulture, Taigu 030801, Shanxi
    2 Experimental Teaching Center, Academic Affairs Office, Shanxi Agricultural University, Taigu 030801, Shanxi
    3 Shanxi Province Doctoral Innovation Station, Yuci 030600, Shanxi
  • Received:2025-11-11 Accepted:2026-01-09 Published:2026-04-08 Online:2026-04-08

摘要:

【目的】针对不利气象条件下园艺设施内极易出现的短期低温胁迫问题,探究外源褪黑素对设施番茄抗寒能力的影响,为褪黑素在设施蔬菜生产中的应用提供理论依据。【方法】以‘合作909’番茄为试验材料,于三叶一心时分别浇灌清水或200 μmol·L-1的褪黑素溶液,5 d后将上述2组各一半的幼苗移至昼/夜温度为12 ℃/7 ℃的环境下进行为期12 d的低温处理,剩余幼苗生长于常温环境,期间测定各处理幼苗形态与叶绿素荧光参数、光合色素与矿质元素含量。为期12 d的苗期温度处理结束后,各组幼苗定植于生长环境一致的日光温室,并监测形态参数、物候期和产量品质等指标。【结果】苗期低温导致番茄幼苗叶片光合色素含量下降、光合性能减弱、矿质元素吸收受阻、植株生长受到抑制,且苗期低温的影响会持续至整个生长期,导致番茄定植后生长速度长期滞后于常温对照,物候期延长、产量下降。外源褪黑素的施用提高了番茄幼苗对N、P、K、Fe元素的吸收能力,减缓了光合色素水平的下降,维持了叶片的光合性能,显著缓解了苗期低温对番茄幼苗生长的抑制作用;同时褪黑素的施用促进了番茄幼苗在定植后的恢复与生长。【结论】苗期低温抑制了番茄幼苗的生长,并且不利影响会持续于番茄定植后的整个生长期;施用褪黑素通过调控养分吸收、维持叶片光合性能,有效缓解了低温对番茄生长发育的不利影响。

关键词: 番茄, 低温, 褪黑素, 光合性能, 物候期, 产量

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.

Key words: tomato, chilling stress, melatonin, photosynthetic property, phenological phase, yield