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Rice Physiology and Production
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Rice Physiology and Production

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Crop Physiology and Crop Production".

Deadline for manuscript submissions: closed (20 February 2025) | Viewed by 1036

Special Issue Editors

Prof. Dr. Junfei Gu

E-Mail Website
Guest Editor
1. Jiangsu Key Laboratory of Crop Genetics and Physiology, Agricultural College, Yangzhou University, Yangzhou, China
2. Jiangsu Key Laboratory of Crop Cultivation and Physiology, Agricultural College, Yangzhou University, Yangzhou, China
Interests: cultivation practices for crop high-yield and high-quality; crop physiology and ecology
Special Issues, Collections and Topics in MDPI journals
Dr. Guang Chu

E-Mail Website
Guest Editor Assistant
China National Rice Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310006, China
Interests: rice; cultivation; grain yield; crop physiology; root; grain filling
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Research on rice physiology and production is one of the most important components and frontier disciplines in current rice science and even the entire agricultural science. The main focus is on studying the response characteristics of rice to different cultivation conditions and the underlying physiological basis. The emphasis is placed on exploring growth and development patterns, cultivation techniques, and physiological and molecular mechanisms to fully exploit the production potential of rice, enhance fertilizer and water use efficiency, and achieve higher yield levels and nutrient use efficiency. Based on the above, we initiated a Special Issue of Plants on “Rice Physiology and Production”, which will focus on the following:

  1. Physiological and molecular mechanisms of high yield and efficient use of fertilizer and water in rice;
  2. The regulatory role of plant hormones in the formation of rice yield and quality;
  3. The response characteristics and physiological mechanisms of rice growth and development to environmental stress.

Dr. Guang Chu
Dr. Junfei Gu
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Plants is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • rice
  • physiology
  • production
  • yield
  • stress

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Published Papers (1 paper)

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Research

18 pages, 4436 KiB  
Article
Combining Controlled-Release and Normal Urea Enhances Rice Grain Quality and Starch Properties by Improving Carbohydrate Supply and Grain Filling
by Chang Liu, Tianyang Zhou, Zhangyi Xue, Chenhua Wei, Kuanyu Zhu, Miao Ye, Weiyang Zhang, Hao Zhang, Lijun Liu, Zhiqin Wang, Junfei Gu and Jianchang Yang
Plants 2025, 14(1), 107; https://doi.org/10.3390/plants14010107 - 2 Jan 2025
Viewed by 737
Abstract
Controlled-release nitrogen fertilizers are gaining popularity in rice (Oryza stavia L.) cultivation for their ability to increase yields while reducing environmental impact. Grain filling is essential for both the yield and quality of rice. However, the impact of controlled-release nitrogen fertilizer on [...] Read more.
Controlled-release nitrogen fertilizers are gaining popularity in rice (Oryza stavia L.) cultivation for their ability to increase yields while reducing environmental impact. Grain filling is essential for both the yield and quality of rice. However, the impact of controlled-release nitrogen fertilizer on grain-filling characteristics, as well as the relationship between these characteristics and rice quality, remains unclear. This study aimed to identify key grain-filling characteristics influencing rice milling quality, appearance, cooking and eating qualities, and physicochemical properties of starch. In this study, a two-year field experiment was conducted that included four nitrogen management practices: zero nitrogen input (CK), a local high-yield practice with split urea applications (100% urea, CU), a single basal application of 100% controlled-release nitrogen fertilizer (CRNF), and a basal application blend of 70% controlled-release nitrogen fertilizer with 30% urea (CRNF-CU). The results showed that a sufficient amount of carbohydrates for the rice grain-filling process, as indicated by a higher sugar–spikelet ratio, is essential for improving grain quality. An increased sugar–spikelet ratio enhances the grain-filling process, resulting in an elevated average grain-filling rate (Gmean) and the peak grain-filling rate (Gmax), while also reducing the overall time required for grain filling (D). Compared to CU, CRNF and CRNF-CU treatments did not significantly change milling qualities, but reduced the chalky kernel rate and chalkiness, thereby enhancing the appearance quality. These treatments increased the amylose and amylopectin contents while reducing protein content, though the proportion of protein constituents remained unchanged. These treatments led to larger starch granules with notably smoother surfaces. Additionally, CRNF and CRNF-CU reduced relative crystallinity and structural order, while increasing the amorphous structure in the outer region of starch granules, which lowered rice starch crystal stability. The treatments also increased viscosity and improved the thermodynamic properties of starch, resulting in enhanced eating and cooking quality of the rice. In conclusion, the CRNF-CU is the most effective strategy in this study to enhance both grain yield and quality. This practice ensures an adequate carbohydrate supply for grain filling, which is essential for efficient grain filling and improved overall quality. Full article
(This article belongs to the Special Issue Rice Physiology and Production)
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