Lower Light Intensities Increase Shoot Germination with Improved Leaf Biosynthesis in Ma Bamboo (Dendrocalamus latiflorus Munro)

Ma bamboo (Dendrocalamus latiflorus Munro) is a major species cultivated in southern China with high economic, ecological, and social value. However, highly dense forests reasonable structures have unclear adverse effects on light transmittance forest productivity that are not adequately understood. Here, we investigated varied light-intensity treatments during different phases of shoot emergence development shoots. The amount total chlorophyll, carotenoids, gas exchange indicators, biosynthetic products were also compared to explore the response mechanism germination downstream biochemical pathways. We found L0 treatment (full sunlight), number germinated shoots under L1 (40% light) increased significantly by 44.07% 101.32% shooting initial-phase metaphase, respectively (p < 0.05). Additionally, net photosynthetic rate (Pn) metaphase was highest treatment, while L4 (10% inhibited chlorophyll synthesis. Further, accumulation leaf carbon (C) nitrogen (N) higher than other treatments. showed rich carbohydrate contents metaphase. Principal component analysis (PCA) revealed positively correlated activity periods. Ultimately, our data suggest most optimal for promoting germination, providing scientific basis cultivating shoot-used China.