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Jiang H, Xu X, Sun A, Bai C, Li Y, Nuo M, Shen X, Li W, Wang D, Tian P, Wei X, Wang G, Yang M, Wu Z. Silicon nutrition improves the quality and yield of rice under dry cultivation. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024; 104:1897-1908. [PMID: 37922382 DOI: 10.1002/jsfa.13098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 09/14/2023] [Accepted: 11/03/2023] [Indexed: 11/05/2023]
Abstract
BACKGROUND Dry cultivation of rice is a water-saving, emission reduction and labor-saving rice farming method. However, the development of rice under dry cultivation is hampered by the limitations of dry cultivation on rice yield and rice quality. We hypothesized that additional silicon (Si) would be a measure to address these limitations or challenges. RESULTS In the present study, we set up field trials with three treatments: flooded cultivation (W), dry cultivation (D) and dry cultivation plus Si. Yield and quality were reduced under D treatment compared to W treatment. The addition of Si promoted root development, increased plant height and leaf area, increased photosynthetic enzyme activity, net photosynthetic rate and SPAD values, and increased biomass under dry crop conditions. Under the drought conditions, silica up-regulated the expression of AGPSI, SBEI, SBEIIb, SSI and SSII-1 genes and the activities of ADP-glucose pyrophosphorylase (AGPase), soluble starch synthetase (SSS) and starch branching enzyme (SBE) enzymes, which reduced protein, amylose, chalkiness percentage and chalkiness degree, increased brown rice rate, milled rice rate and head milled rice rate, and also improved rice quality. In addition, the increase of AGPase, SSS and SBE enzyme activities promoted the filling rate and the number of spikes was guaranteed, whereas the yield was improved by promoting the seed setting rate and 1000-grain weight. CONCLUSION The results of the present study indicate that adding appropriate amounts of Si fertilizer can improve the yield and quality of rice under dry cultivation by regulating source supply capacity and grain starch synthesis. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Hao Jiang
- Faculty of Agronomy, Jilin Agricultural University, Changchun, China
- National Crop Variety Approval and Characterization Station, Jilin Agricultural University, Changchun, China
- Jilin Provincial Laboratory of Crop Germplasm Resources, Changchun, China
| | - Xiaotian Xu
- Faculty of Agronomy, Jilin Agricultural University, Changchun, China
| | - Anran Sun
- Faculty of Agronomy, Jilin Agricultural University, Changchun, China
| | - Chenyang Bai
- Faculty of Agronomy, Jilin Agricultural University, Changchun, China
| | - Yunzhe Li
- Faculty of Agronomy, Jilin Agricultural University, Changchun, China
| | - Min Nuo
- Faculty of Agronomy, Jilin Agricultural University, Changchun, China
| | - Xinru Shen
- Faculty of Agronomy, Jilin Agricultural University, Changchun, China
| | - Wanchun Li
- Faculty of Agronomy, Jilin Agricultural University, Changchun, China
| | - Dongchao Wang
- Faculty of Agronomy, Jilin Agricultural University, Changchun, China
| | - Ping Tian
- Faculty of Agronomy, Jilin Agricultural University, Changchun, China
| | - Xiaoshuang Wei
- Faculty of Agronomy, Jilin Agricultural University, Changchun, China
| | - Guan Wang
- Faculty of Agronomy, Jilin Agricultural University, Changchun, China
| | - Meiying Yang
- College of Life Sciences, Jilin Agricultural University, Changchun, China
| | - Zhihai Wu
- Faculty of Agronomy, Jilin Agricultural University, Changchun, China
- National Crop Variety Approval and Characterization Station, Jilin Agricultural University, Changchun, China
- Jilin Provincial Laboratory of Crop Germplasm Resources, Changchun, China
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