The growth of two wetland forage grasses Leptochloa fusca (L.) Kunth. and Echinochloa stagnina (L.) P. Beauv. was investigated under NaCl salinity regarding the morphological traits, plant chemical composition, photosynthesis and the antioxidant enzymes POD and CAT. Plants of both species were irrigated with 0, 50, 100, 200, 300 and 400 mM NaCl in a sand/perlite mixture of 1:1 (v/v). Salinity negatively affected morphological traits and plant biomass of both species, particularly E. stagnina. Soluble sugars and proline within limits, protein contents of the foliage were increased to different extents by increasing salinity, but insoluble sugar decreased. K⁺/Na⁺ ratio of shoot and root of both species was decreased as a consequence of Na⁺ accumulation and restricted K⁺ uptake. NaCl salinity adversely affected photosynthetic rate, transpiration rate, stomatal conductance and water use efficiency of both species particularly E. stagnina. Tolerance of L. fusca and E. stagnina to salinity stress can be based on stomatal closure and reduction in leaf area, in order to minimize water loss via transpiration and increase the activity of some antioxidant enzymes to detoxifying ROS generated during stress.

两种湿地饲草的生长Leptochloa fusca（L.）Kunth。和Echinochloa stagnina（L.）P. Beauv。在NaCl盐度下进行了形态，植物化学组成，光合作用以及抗氧化酶POD和CAT的研究。将两种，两种植物分别以1：1（v / v）的沙/珍珠岩混合物分别用0、50、100、200、300和400 mM NaCl灌溉。盐度对这两种物种的形态特征和植物生物量均具有负面影响，特别是对雌蕊茎线虫。通过增加盐度，可溶性糖和脯氨酸在一定范围内，叶片的蛋白质含量在不同程度上增加，但不溶性糖减少。钾⁺ /钠⁺Na ⁺积累和限制的K ⁺吸收降低了两个物种的芽和根的比率。NaCl盐度不利地影响了两个物种（尤其是葡萄球菌）的光合速率，蒸腾速率，气孔导度和水分利用效率。的公差L. fusca的和E. stagnina盐胁迫可以基于气孔关闭和减少叶面积，以最小化通过蒸腾的水损失和提高抗氧化酶的活性以解毒应力过程中产生ROS。