Source-Sink Regulation and Yield Formation in Cereals

Dear Colleagues,

Since the 1960s, the proposal of the crop source–sink theory has provided a new direction for crop production and yield improvement and has significantly boosted crop yields. Six decades later, with advances in our scientific understanding and research technologies, the source–sink theory has been further elaborated and supplemented.

Against this background, this Special Issue aims to gather the latest cutting-edge research findings, reviews, and perspectives focusing on the roles of cereal source–sink relationships, source-side regulation, and sink-side regulation in cereal yield formation. We seek to provide an academic platform for researchers worldwide to exchange innovative ideas, share research progress, and promote the practical application of the source–sink theory in cereal production.

The scope of this Special Issue mainly focuses on cereal foods, including but not limited to rice, wheat, maize, barley, sorghum, and other major cereal grains crucial for global food security. Notably, submissions are not restricted to a single crop species; comparative studies across multiple cereal crops or interdisciplinary research combining different cereal crop systems are also highly encouraged.

In terms of research levels, we welcome studies from diverse perspectives, including but not limited to:

(1) Ecophysiological studies: exploring the responses of cereal source–sink relationships to environmental factors (e.g., temperature, water, light, and nutrients) and their impacts on yield formation.

(2) Molecular physiological studies: investigating the molecular mechanisms, key genes, and signaling pathways regulating source strength (photosynthetic efficiency, assimilate transport) and sink capacity (grain filling, sink size) in cereals.

(3) Cultivation and chemical regulation studies: developing and evaluating cultivation measures (e.g., planting density, fertilization management, pruning) and chemical regulators that can optimize the source–sink balance and improve cereal yield.

Dr. Si Shen
Guest Editor

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