Open access
Aug 2026
Nitrogen supply modulates carbon–nitrogen balance and metabolic profiles in contrasting onion varieties
Onion bulb quality is largely defined by non-structural carbohydrates, phenolic antioxidants, and sulfur-containing flavor precursors, yet integrative evidence on how these domains respond to nitrogen imbalance under controlled conditions remains limited. A pot experiment applied four ammonium nitrate levels (N1–N4; 0....
M. L. Romo-Pérez, C. H. Weinert, B. Egert et al.
· Frontiers in Plant Science · 0 citations