Reproductive strategies for specific populations are closely related to environmental factors. Consequently, they are fundamental for conservation plans and the management of threatened habitats like salt marshes. From this viewpoint, germination strategy under different temperatures and salt conditions, voltammetric parameters and molecular analysis were performed and compared in six Halocnemum populations (four of H. cruciatum and two of H. strobilaceum) growing on Mediterranean (Balearic, Tyrrenic and Adriatic) and Red Sea coasts to establish the relation to environmental variables. Significant interpopulation differences were found in all the evaluated parameters. The Mediterranean populations showed a variable opportunistic germination strategy that was directly related to the drought period length at the studied sites. Consequently, potential environmental predictors of seed response were identified. The most noteworthy were bioclimate, soil texture, continentality index, winter temperatures and summer precipitations. Additionally, voltammetric parameters were evidenced as indicators of maternal plant stress levels and, thus, as potential determinants of future seed responses. The phylogenetic analyses showed a split into two species that did not correspond to germination response. The phylogeographic analyses showed interpopulation differences in haplotype composition for H. cruciatum, but not for H. strobilaceum. In conclusion, the tight connection between seed responses and the ecological parameters of natural populations as an adaptation for successful seedling emergence was proved regardless of its phylogenetic relations.

中文翻译：

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来自地中海（巴利阿里、第勒尼和亚得里亚海）和红海沿岸盐沼的两种盐生植物种子萌发的环境预测因子

特定种群的生殖策略与环境因素密切相关。因此，它们对于保护计划和管理受威胁的栖息地（如盐沼）至关重要。从这个角度出发，对六种植物在不同温度和盐条件下的发芽策略、伏安参数和分子分析进行了比较卤木属人口（四个十字花科和两个球果) 生长在地中海（巴利阿里、第勒尼和亚得里亚海）和红海沿岸，以建立与环境变量的关系。在所有评估的参数中都发现了显着的种群间差异。地中海种群表现出可变的机会发芽策略，这与研究地点的干旱期长度直接相关。因此，确定了种子反应的潜在环境预测因子。最值得注意的是生物气候、土壤质地、大陆性指数、冬季温度和夏季降水量。此外，伏安参数被证明是母体植物胁迫水平的指标，因此是未来种子反应的潜在决定因素。系统发育分析显示分裂为两个物种，这与发芽反应不一致。十字花科, 但不是为了球果. 总之，无论其系统发育关系如何，种子反应与自然种群生态参数之间的紧密联系作为成功幼苗出苗的适应被证明。