Maize is an important crop, with genotype BRS-4154, 'Saracura', being tolerant to intermittent flooding. Cattail is an aquatic plant with known radial oxygen loss activity, being widely diffused around the world and highly invasive. We aimed to analyse the interaction of Maize and Cattail under waterlogging and field capacity. The experiment was conducted in pots containing red latosol and nutrient solution in a greenhouse, 10 days after germination, when maize plants reached the average height of 12.5 cm, the sources of variation were introduced, being the presence or absence of Cattail and waterlogged or at field capacity with the conditions being kept by refilling the water lost. The experiment was conducted in a factorial completely randomized design (2 × 2). Growth data were collected fortnightly, 5 times, with dry weight measured on the eightieth day. The analysis of gas exchange, chlorophyll content, and sampling for leaf anatomy was performed monthly, twice, using an infrared gas-exchange analyser and a SPAD unit meter. In the final 5 days of the experiment, the dissolved oxygen in waterlogged pots was measured consecutively and roots were sampled for usual microtechnique procedures. Waterlogging was detrimental however Cattail increased the dissolved oxygen content and benefitted maize showing no competition.

玉米是重要的农作物，其基因型为BRS-4154'Saracura'，耐间歇性泛滥。香蒲是具有已知的放射状氧损失活性的水生植物，在世界范围内广泛散布并且具有高度侵入性。我们旨在分析在涝渍和田间持水条件下玉米和香蒲的相互作用。该实验是在发芽后10天的温室中的装有红色番茄红素和营养液的盆中进行的，当玉米植物达到12.5厘米的平均高度时，引入了变异源，即是否存在香蒲和浸水或在现场容量，并通过补充损失的水来保持条件。实验以阶乘完全随机设计（2×2）进行。每两周收集5次增长数据，在第80天测量的干重。使用红外气体交换分析仪和SPAD单位计，每月两次进行气体交换，叶绿素含量和叶片解剖取样的分析。在实验的最后5天，连续测量浸满水的花盆中的溶解氧，并对根进行取样，以进行常规的微技术操作。涝害是有害的，但是香蒲增加了溶解氧的含量，使没有竞争的玉米受益。连续测量浸水盆中的溶解氧，并按照常规的微技术步骤对根进行采样。涝害是有害的，但是香蒲增加了溶解氧的含量，使没有竞争的玉米受益。连续测量浸水盆中的溶解氧，并按照常规的微技术步骤对根进行采样。涝害是有害的，但是香蒲增加了溶解氧的含量，使没有竞争的玉米受益。