Soybean (Glycine max), as a vital oilseed crop, is a major source of global high-quality protein and edible oil. With the growing demand for soybean production, a central goal in soybean improvement is to identify yield-related genes and develop high-yielding varieties. Unlike rice and wheat, soybean yield components are more complex, involving multiple traits such as plant height, number of inflorescence-bearing leaf axils (nodes), number of pods per node, seeds per pod, seed size, and seed weight. These traits are often interdependent and can be mutually restrictive. For instance, in semi-dwarf soybean varieties, the number of nodes and pods is typically reduced, leading to decreased overall yield. This intrinsic complexity constrains the direct application of dwarfing strategies that fueled the Green Revolution in gramineous crops and poses a major challenge for further yield improvement in soybean. Cytokinins (CKs) are essential phytohormones that regulate plant growth and development primarily by promoting cell division. CK homeostasis is tightly controlled by multiple mechanisms, including irreversible degradation mediated by cytokinin oxidase/dehydrogenase (CKX).