Basic study on crop response and acclimation for low oxygenic condition

大豆湿害是大豆生产中的重要障碍，但其发生机制尚不清楚。本研究采用水培方法，以人工模拟的“低氧”湿润土壤为模型，研究了田间耐湿性已知的大豆品种对低氧胁迫的响应。结果表明，低氧是造成大豆湿害的主要因素之一。发现了品种对低氧的特异性反应，如叶面积减少或细根减少，根系吸水率下降。

Soybean’s wet injury is important obstacle in the production, however themechanism has not been clear. In this study, ‘low oxygenic condition’ was made artificially as a modelof wet soil with a hydroponic culture, various soybeans whose field-wet endurance were known, werestudied on the response for low oxygen. As results, the relationship between the response and the wetendurance was detected, and concluded that one of the main factor for soybean’s wet injury was lowoxygen. And cultivar-specific response for low oxygen, as like the reduction of leaf area or fine root,and the decline of root water uptake were found out.