Cultivation of salt-tolerant crops help to face to irreversible global salinization of freshwater and soils. In New-Caledonia, three halophytes are candidates for saline crops, Salsola australis R.Br., Suaeda maritima (L.) Dumort and Enchylaena tomentosa R.Br. Their success and quality depend yet on availabilities of salinity and essential nutrients in agrosystems. So, we investigated effects of three salinities, i.e., control moderate and high, and five nitrogen ratios, i.e., 100:0, 75:25, 50:50, 25:75 or 0:100 NO₃⁻-N:NH₄⁺-N ratio on their growth and functional value for fatty acids and antioxidants. Results show that the leaf fatty acid and antioxidant profiles of species, emphasize their good potential to become functional crop products, based on comparison with other functional plants, dietetic recommendation, or functional indices. However, their total phenolic compounds (TPC) content can be influenced by N-ratio (Suaeda maritima and Enchylaena tomentosa) and their antioxidant activity index (AAI) can be influenced by salinity (Suaeda maritima), N-ratio (Salsola australis) or both (Enchylaenatomentosa). Their quantitative and/or qualitative fatty acid profiles can also be influenced by salinity (Enchylaena tomentosa), N-ratio (Suaeda maritima), or both (Salsola australis). Regarding these variations, involving salt tolerance and nitrogen nutrition mechanisms, we recommend suitable treatments to maintain or optimize the growth and the functional quality of leaves in the three species.

中文翻译：

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咸水和氮素形态对盐生盐生菜，盐地鳄和绒螯虾生长，抗氧化剂和脂肪酸谱的影响，从生物盐农业角度看

耐盐作物的种植有助于面对全球不可逆转的淡水和土壤盐碱化。在新喀里多尼亚，三种盐生植物是盐生作物的候选植物，即南方Salsola australis R.Br.，Suaeda maritima（L.）Dumort和Enchylaena tomentosaR.Br。它们的成功和质量还取决于农业系统中盐分和必需营养素的利用率。因此，我们研究了三种盐度（即控制中度和高盐度）和五个氮比（即100：0、75：25、50：50、25：75或0：100的氮比）的影响NO ₃ ^-- N：NH ₄ ⁺-N比对它们的生长以及脂肪酸和抗氧化剂的功能价值。结果表明，根据与其他功能性植物的比较，饮食建议或功能指数，物种的叶片脂肪酸和抗氧化剂谱强调其成为功能性作物产品的良好潜力。但是，它们的总酚类化合物（TPC）含量会受到N比率（Suaeda maritima和Enchylaena tomentosa）的影响，而其抗氧化活性指数（AAI）会受到盐度（Suaeda maritima），N比率（Salsola australis）或两者（Enchylaena tomentosa）。它们的定量和/或定性脂肪酸谱也可能受到盐度的影响（Enchylaena tomentosa），N比率（Suaeda maritima）或两者兼有（Salsola australis）。关于这些变异，包括耐盐性和氮素营养机制，我们建议采用适当的处理方法来维持或优化这三个物种的叶片生长和功能质量。