Selection of Glycine max (L.) merr accessions tolerant to Waterlogging

Waterlogging smothers soybean growth, choking roots and disrupting essential functions.Oxygen starvation, nutrient imbalance, and weakened defenses against disease leave plants stunted, chlorotic, and vulnerable.Yields plummet, seeds struggle to mature, and soil suffers long-term consequences, painting a grim picture for soybean crops submerged in persistent floodwaters.This study investigated the effects of waterlogging on five accessions of Glycine max .Plant height, leaf area, total photosynthetic pigments (TPP), biomass yield, and root length were measured after 2, 3, and 4 weeks of waterlogging stress.TGm-9 exhibited superior performance across all parameters compared to other accessions and the control.It displayed the highest plant height (28.67 cm), leaf area (14.76 cm²), TPP content (44.83 mg/kg), biomass yield (1.73 g), and root length (30.17 cm).Despite some reductions in growth and physiology observed in all accessions under waterlogging, TGm-9 demonstrated remarkable resilience.This enhanced tolerance likely resulted from its robust development of adventitious root systems, a known adaptive response in G. max.These findings suggest that TGm-9 possesses superior waterlogging tolerance and has the potential for improved productivity in flood-prone environments.Further research could delve into the specific mechanisms underlying TGm-9's tolerance and explore its potential for breeding programs to develop waterlogging-resistant soybean cultivars.