Branches exhibit greater photosynthetic tolerance than leaves in dwarfing apple trees under water stress: a single-season study in Loess Plateau

2026-06-19

Xu Quanyue

Chen Ruixia

Jiang Nan

Ma Juanjuan

Zheng Lijian *

DOI：10.1016/j.scienta.2026.114961

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• Photosynthesis in apple branches varied greatly with age and water availability. • Rubisco concentration, vessel diameter, and cortical thickness were important variables in promoting branch photosynthesis. • Photosynthetic capacity of branches increases under severe water stress compared to full irrigation. • A moderate water shortage improved the coordination of the apple branch-leaf system.

Keywords:

Branch-leaf photosynthesis ratio

Rubisco

Xylem structure

Non-structural carbohydrates

Coupling coordination

Branches exhibit greater photosynthetic tolerance than leaves in dwarfing apple trees under water stress: a single-season study in Loess Plateau

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