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中国农学通报

中国农学通报 ›› 2025, Vol. 41 ›› Issue (9): 73-80.doi: 10.11924/j.issn.1000-6850.casb2024-0489

• 林学·园艺·园林 • 上一篇    下一篇

外源肌醇对盐胁迫下番茄产量和品质的影响

黄文茵1(), 张白鸽1, 常静静1, 陈潇1, 李静1, 陈雷1, 赵俊宏2, 罗谋雄3, 宋钊1()   

  1. 1 广东省农业科学院蔬菜研究所/广东省蔬菜重点实验室，广州 510640
    2 广东省农业科学院设施农业研究所，广州 510640
    3 南雄市乡村振兴服务中心，广东韶关 512400
  • 收稿日期:2024-07-19 修回日期:2025-01-22 出版日期:2025-03-25 发布日期:2025-03-25
  • 通讯作者:
    宋钊，男，1982年出生，湖南张家界人，副研究员，博士研究生，研究方向：蔬菜简约化栽培与抗逆研究。通信地址：510640 广东省广州市天河区五山街道金颖路66号 广东省农业科学院蔬菜研究所，Tel：020-38801740，E-mail：。
  • 作者简介:

    黄文茵，女，1999年出生，广东江门人，实习研究员，学士，研究方向：蔬菜园艺。通信地址：510640 广东省广州市天河区金颖路66号 广东省农业科学院蔬菜研究所，Tel：020-38469583，E-mail：。

  • 基金资助:
    广东省农业科学院智慧（数字）农业协同创新研究专项资金资助“作物生长信息感知关键技术研究”(XTXM202201); 广东省基础与应用基础研究基金面上项目“镁调控果胶代谢影响冬瓜耐贮性的生理和分子机制”(2023A1515012694); 以农产品为单元的广东省现代农业产业技术体系创新团队建设项目(2022KJ110)

Effect of Exogenous Inositol on Yield and Quality of Tomatoes Under Salt Stress

HUANG Wenyin1(), ZHANG Baige1, CHANG Jingjing1, CHEN Xiao1, LI Jing1, CHEN Lei1, ZHAO Junhong2, LUO Mouxiong3, SONG Zhao1()   

  1. 1 Key Laboratory for New Technology Research of Vegetable/ Vegetable Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640
    2 Institute of Facility Agriculture, Guangdong Academy of Agricultural Sciences, Guangzhou 510640
    3 Nanxiong Rural Revitalization Service Center, Shaoguan, Guangdong 512400
  • Received:2024-07-19 Revised:2025-01-22 Published:2025-03-25 Online:2025-03-25

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摘要：

本研究以‘红箭’小番茄为试验材料，设置0%(CK)、0.05%(MI1)、0.1%(MI2)、0.2%(MI3)和0.4%(MI4)5个肌醇浓度梯度，探究外源肌醇浓度变化对番茄产量和品质的影响。在此基础上，设置100 mmol/L NaCl盐胁迫处理(N)及盐胁迫下添加0.2%浓度的肌醇处理(NM3)，探究肌醇在缓解番茄盐胁迫中的作用。结果表明，随着肌醇浓度增加，番茄产量整体呈先增加后降低的变化趋势，其中MI3处理番茄产量较CK显著增加了17.7%；外源肌醇的施用能够增加番茄产量，并与提高叶片SPAD值、促进根系生长、提高关键抗氧化物酶活性（如POD活性）密切相关。低浓度肌醇(MI1、MI2)施用显著提高了果实维生素C含量，而随着肌醇浓度继续增加对果实维生素C含量无显著影响；施用外源肌醇后果实可溶性糖含量显著增加了38.6%~166.2%，而可溶性蛋白含量降低了13.4%~22.6%。盐胁迫下通过抑制番茄根系生长、增加丙二醛(MDA)含量、降低抗氧化系统酶活性使番茄产量、叶片SPAD值和维生素C含量较CK显著降低了16.1%、14.4%和26.4%。相反，在盐胁迫下施用适宜浓度的肌醇(NM3)可以显著促进根系生长、降低MDA含量、提高抗氧化物系统酶活性，从而使番茄产量、叶片SPAD值、维生素C和番茄红素含量较N处理显著提升了37.8%、13.5%、23.8%和34.5%。适宜浓度外源肌醇(MI3)施用可以显著促进番茄根系生长、提高关键抗氧化物酶活性，从而增加番茄产量、改善果实品质；此外，适宜浓度外源肌醇施用可以明显缓解番茄盐胁迫，提高番茄产量和品质。

关键词: 外源肌醇, 番茄, 盐胁迫, 产量, 品质, 根系形态, 抗氧化系统

Abstract:

The paper aims to investigate the optimal concentration of exogenous inositol and its effect on yield, quality and antioxidant system of tomato under salt stress, and to provide some theoretical basis for the application of inositol in quality improvement of tomato production. In the present study, five inositol concentration gradients of 0% (CK), 0.05% (MI1), 0.1% (MI2), 0.2% (MI3) and 0.4% (MI4) were established to investigate the effects of exogenous inositol on tomato yield and quality using ‘Hongjian’ cherry tomato as the test material. On this basis, the 100 mmol/L NaCl salt stress treatment (N) and the inositol treatment (NM3) with 0.2% inositol were established to investigate the role of inositol in alleviating salt stress in tomato. With increasing inositol concentration, tomato yield showed an overall trend of increasing and then decreasing, in which the tomato yield of MI3 treatment was significantly increased by 17.7% compared to that of CK. The increase in tomato yield by exogenous inositol application was closely related to the increase in leaf SPAD value, the promotion of root growth and the enhancement of the activity of key antioxidant enzymes (e.g. POD activity). Low concentrations of inositol (MI1 and MI2) significantly increased the vitamin C content of the fruits, while increasing the concentration of inositol had no significant effect on the vitamin C content of the fruits. The soluble sugar content of the fruits significantly increased by 38.6%-166.2%, while the soluble protein content decreased by 13.4%-22.6% after the application of exogenous inositol. Salt stress significantly reduced tomato yield, leaf SPAD and vitamin C content by 16.1%, 14.4% and 26.4% respectively compared to CK by inhibiting root growth, increasing malondialdehyde (MDA) content and decreasing enzyme activities of the antioxidant system. On the contrary, application of inositol (NM3) under salt stress significantly promoted root growth, reduced MDA content and increased the activity of antioxidant system enzymes, resulting in a significant increase in tomato yield, leaf SPAD, vitamin C and lycopene content by 37.8%, 13.5%, 23.8% and 34.5% compared with N treatment. The application of exogenous inositol at an appropriate concentration (MI3) could significantly promote tomato root growth and increase the activities of key antioxidant enzymes, thus increasing tomato yield and improving fruit quality; furthermore, the application of exogenous inositol at an appropriate concentration could significantly alleviate salt stress in tomato and improve tomato yield and quality.

Key words: exogenous inositol, tomato, salt stress, yield, quality, root morphology, antioxidant system