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Silicon Improves the Plant Growth and Fruit Quality of Cherry Tomato (Solanum lycopersicum var. cerasiforme) under Nitrogen Imbalance by Modulating Nitrogen Assimilation and Photosynthesis

文献类型: 外文期刊

作者: Lei, Fei 1 ; Pan, Xiaozhong 1 ; Lin, Huiru 3 ; Zhang, Zhijun 1 ; Zhang, Wen 1 ; Tan, Hao 1 ; Yang, Mei 4 ; Liu, Hailin 2 ;

作者机构: 1.Hainan Acad Agr Sci, Agr Environm & Soil Res Inst, Haikou 571100, Peoples R China

2.Chinese Acad Trop Agr Sci, Rubber Res Inst, Haikou 571101, Peoples R China

3.China Agr Univ, Coll Resources & Environm Sci, Beijing 100083, Peoples R China

4.Chongqing Three Gorges Acad Agr Sci, Chongqing 404100, Peoples R China

关键词: Nitrogen; Silicon; Cherry tomato; Plant growth; Fruit quality

期刊名称:JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION ( 影响因子:3.4; 五年影响因子:3.6 )

ISSN: 0718-9508

年卷期: 2024 年

页码:

收录情况: SCI

摘要: Silicon (Si) is typically considered a nonessential but beneficial element for most plants, and it can alleviate nutrient imbalance stress in crops. However, few studies have investigated the impact of Si application on the growth and fruit quality of cherry tomatoes, leading uncertainty regarding whether Si application can improve cherry tomato yields and quality under N imbalance. In this study, we performed a pot experiment with cherry tomato plants, and used two N fertilizer inputs (high N level, 0.40 g N kg(- 1) soil; low N level, 0.20 g N kg(- 1) soil) with or without Si application, to investigate the influence of Si application on plant growth, photosynthesis, leaf N metabolic enzyme activities, and fruit quality in cherry tomatoes under N imbalance. This study aimed to assess the promotive effects of Si application on the growth and fruit quality of cherry tomatoes under nitrogen (N) imbalance. The results showed that Si application enhanced dry matter accumulation and photosynthesis, regardless of the N conditions. Compared with treatment without Si application, the total dry matter accumulation, net photosynthetic rate, stomatal conductance, and transpiration rate were enhanced by 2.59%, 3.76%, 23.9%, and 17.1% under low N conditions, and by 7.50%, 26.2%, 49.1%, and 26.3% under high N conditions, respectively. Furthermore, Si regulated the activities of leaf N metabolic enzymes, increasing the N content of the plant under low N conditions and decreasing it under high N conditions. Si application improved fruit quality, as the vitamin C content and firmness were increased by 13.2% and 3.57% under low N conditions and by 7.09% and 17.4% under high N conditions, respectively. This study provides evidence regarding Si application as a beneficial strategy for cherry tomato production, highlighting its potential role in optimizing plant responses to varying N levels.

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