Related Experiment Video
Updated: Jan 26, 2026
09:43
Author Spotlight: Streamlining Rice Breeding with CRISPR/Cas for Obtaining Optimal Phenotypic and Agronomic Traits
Published on: January 3, 2025
3.4K
Closing yield gaps for rice self-sufficiency in China
Nanyan Deng1, Patricio Grassini2, Haishun Yang2
1National Key Laboratory of Crop Genetic Improvement, MARA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
Nature Communications
|April 14, 2019
Summary
China
Area of Science:
- Agricultural Science
- Food Security
- Spatial Analysis
Background:
- China is a major global rice producer, supplying 28% of the world's total.
- Rural-to-urban demographic shifts intensify competition for land and water resources.
- Maintaining rice self-sufficiency is critical for China's food security.
Purpose of the Study:
- To conduct a spatial analysis of China's rice production potential.
- To evaluate scenarios for maintaining rice self-sufficiency by 2030.
- To identify optimal strategies for yield improvement and research investment.
Main Methods:
- Detailed bottom-up spatial analysis of rice production.
- Evaluation of yield-gap analysis methodologies (bottom-up vs. top-down).
- Scenario modeling for rice production to 2030.
Main Results:
- China is projected to remain self-sufficient in rice under current trends.
- Increasing yields in double-rice systems and specific single-rice provinces offers the greatest return on investment.
- Different analytical approaches yield divergent R&D priorities.
Conclusions:
- China's rice self-sufficiency is likely sustainable with targeted yield improvements.
- Strategic investment in research and development is crucial for future food security.
- Methodological choices significantly impact agricultural policy and R&D direction.
Related Concept Videos
01:31ATP Yield
78.4K
Cellular respiration produces 30 - 32 ATP per glucose molecule. Although most of the ATP results from oxidative phosphorylation and the electron transport chain (ETC), 4 ATP are gained beforehand (2 from glycolysis and 2 from the citric acid cycle).
The ETC is embedded in the inner mitochondrial membrane and is comprised of four main protein complexes and an ATP synthase. NADH and FADH2 pass electrons to these complexes, which pump protons into the intermembrane space. This distribution of...
The ETC is embedded in the inner mitochondrial membrane and is comprised of four main protein complexes and an ATP synthase. NADH and FADH2 pass electrons to these complexes, which pump protons into the intermembrane space. This distribution of...
78.4K
02:22Reaction Yield
59.4K
The theoretical yield of a reaction is the amount of product estimated to form based on the stoichiometry of the balanced chemical equation. The theoretical yield assumes the complete conversion of the limiting reactant into the desired product. The amount of product that is obtained by performing the reaction is called the actual yield, and it may be less than or (very rarely) equal to the theoretical yield.
59.4K
01:37Gap Junctions
57.0K
Multicellular organisms employ a variety of ways for cells to communicate with each other. Gap junctions are specialized proteins that form pores between neighboring cells in animals, connecting the cytoplasm between the two, and allowing for the exchange of molecules and ions. They are found in a wide range of invertebrate and vertebrate species, mediate numerous functions including cell differentiation and development, and are associated with numerous human diseases, including cardiac and...
57.0K
01:27Gap Junctions
9.4K
The cytoplasm of adjacent animal cells can exchange small molecules, ions, and secondary messengers via the communication channels which form the gap junctions. These junctions comprise a few hundred to thousands of molecular channels, each made of two halves, called the connexon hemichannel. A connexon is a hexamer of six transmembrane connexin proteins, which assemble radially, thus forming a pore or channel in the center. One connexon hemichannel docks with a corresponding connexon on the...
9.4K
01:29Close Relationships and Culture
225
Culture shapes how people approach attraction, choose partners, and build long-term relationships. While some preferences in mate selection appear consistent across cultures, such as men valuing physical attractiveness and women emphasizing financial resources, cultural contexts influence how these preferences are expressed and prioritized. Marriage extends beyond romantic ideals in many societies and is deeply embedded in social, economic, and religious frameworks.The Role of Culture in Mate...
225
01:20Friendships and Close Friendships
222
Friendship formation is a dynamic process shaped by psychological, cultural, and social factors. Friendships play a crucial role in emotional well-being, social development, and personal identity from childhood to adulthood.Childhood and Early FriendshipsFriendships in childhood often arise due to shared environments, such as school or neighborhood interactions. At this stage, proximity and common interests serve as the primary basis for connection. As children grow, their friendships evolve...
222