Demiss Mulugeta, Singh Upendra, Fugice Job, Stewart Zachary P, Nagarajan Latha
Research Division International Fertilizer Development Center (IFDC) Muscle Shoals Alabama USA.
Center for Agriculture-Led Growth, Bureau for Resilience and Food Security United States Agency for International Development (USAID) Washington DC USA.
Plant Environ Interact. 2025 Mar 10;6(2):e70043. doi: 10.1002/pei3.70043. eCollection 2025 Apr.
There is a lack of studies examining the effects of prolonged waterlogging on both yield and nutrient uptake partitioning in teff. A greenhouse study was conducted to assess the impact of different durations of waterlogging on teff's growth, yield, nutrient uptake and partitioning among grain, straw, and root components. Teff plants were subjected to five waterlogging durations as days after transplanting (DAT) ranging from upland to waterlogging to the entire growing period (WHOLE). No significant differences among treatments for most of the study parameters were observed. However, both grain and straw dry matter yields showed an inconsistent trend with the waterlogging duration. On the other hand, the WHOLE treatment resulted in significantly greater root weight compared to the control treatment. Nitrogen (N), phosphorus (P), and potassium (K) uptakes were reduced in grain and straw but increased in roots as the duration of waterlogging increased. Overall, the results suggest that teff can tolerate waterlogging conditions throughout the entire growing period. These results are discussed, and the need for further studies to understand the regulation of root metabolism and physiological mechanisms responsible for teff's tolerance to prolonged waterlogging is stressed.
目前缺乏关于长期渍水对埃塞俄比亚画眉草产量和养分吸收分配影响的研究。为此开展了一项温室研究，以评估不同渍水持续时间对埃塞俄比亚画眉草生长、产量、养分吸收以及在籽粒、秸秆和根系各部分之间分配的影响。将埃塞俄比亚画眉草植株在移栽后天数（DAT）设置为五个渍水持续时间，范围从旱地到渍水直至整个生育期（全程渍水）。在大多数研究参数的处理之间未观察到显著差异。然而，籽粒和秸秆干物质产量随渍水持续时间呈现出不一致的趋势。另一方面，与对照处理相比，全程渍水的处理使根重显著增加。随着渍水持续时间增加，籽粒和秸秆中的氮（N）、磷（P）和钾（K）吸收量减少，但根系中的吸收量增加。总体而言，结果表明埃塞俄比亚画眉草在整个生育期都能耐受渍水条件。对这些结果进行了讨论，并强调需要进一步研究以了解根系代谢调控以及埃塞俄比亚画眉草耐受长期渍水的生理机制。
