Foliar application of sodium gluconate enhances photosynthetic efficiency and photoassimilate accumulation in Dendrocalamus brandisii across vegetative phenological stages

作者：Lei Huang, Yuntao Yang, Fangwei Zhu, Ju Chang, Shuguang Wang, Changming Wang, Maobiao Li, Hui Zhan · 发表于：Industrial Crops and Products · 年份：2025 · DOI：10.1016/j.indcrop.2025.121030 · 被引用次数：3 · 研究领域：Flowering Plant Growth and Cultivation、Growth and nutrition in plants、Leaf Properties and Growth Measurement

Bamboo is widely distributed in the tropical, subtropical, and temperate regions worldwide and high productivity of bamboo forests are essential to the livelihoods of people. Small-molecule organic fertilizers, such as sodium gluconate (SG), are known to enhance crop growth and quality, their application in bamboo remains unstudied. Photosynthesis and its products are particularly important for bamboos. Thus, to investigate the effect of SG on the photosynthetic efficiency and photoassimilate accumulation in bamboo, the net photosynthetic rate (Pn), chlorophyll fluorescence (Fv/Fm and Fv`/Fm`), photosynthetic pigment, as well as soluble sugar and starch accumulation in response to foliar application of SG to Dendrocalamus brandisii at different vegetative phenological stages were determined. The results showed that SG application notably enhanced photosynthesis, with the most significant effects observed in young and mature leaves at branching and leafing stage in May and shooting stage in August. The soluble sugar content in young leaf was enhanced notably, contributing to enhancing stress tolerance. Thus, as the main or auxiliary agent to fertilizer, SG application to D. brandisii bamboo plantation was preferably scheduled in May and August. Potential limitations of excessive SG application was crucial to be considered. The findings shall furnish the theoretical basis for improving the management and production of bamboo plantations. • Effects of sodium gluconate (SG) on pho...