Source-sink manipulations through shading, crop load and water deficit affect plant morphogenesis and carbon sink priorities leading to contrasted plant carbon status in grapevine.

ABSTRACT:

Background and aims

Shading, water deficit and crop load shape plant development in a very plastic way. They directly influence the plant's carbon supply and demand to and from the different organs via metabolic, hydraulic and hormonal mechanisms. However, how the multiple environmental factors combine through these mechanisms and how they interplay with carbon status, vegetative and reproductive development and carbon assimilation of the plant needs to be investigated in the context of current climatic and technological constraints.

Methods

With this aim, two experiments were conducted on potted grapevines, subjected to ten combinations of treatments. Leaf area growth rates, berry characteristics at harvest (weight, number and total soluble content) and a series of leaf tra

SUBMITTER: Poupard M 

PROVIDER: S-EPMC12401888 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature