Amaranth (Amaranthus spp.) have gained interest as crop family to be grown under diverse soil conditions such as drought and heat stress. However, the presence of salinity affects crop’s germination process due to reduction in water availability for seeds to germinate. In this study, germination behaviour of Amaranthus hybridus L., Amaranthus viridis L., Amaranthus tricolor L. and Amaranthus giganticus L. under salinity condition were analysed through hydrotime model analysis. Five water potentials in NaCl solution to induce salinity condition (0, −0.3, −0.6, −0.9, and −1.2 MPa) were used in the germination tests. Differences in salinity tolerance were determined in the different species during germination. A. giganticus recorded a lower θ_H (40.30) and more negative Ψ_b(50) (−1.55) as well as higher germination rate as compared to the other species. The hydrotime modelling approach applied in this study for the analysis of amaranth species which might help to identify crop salt tolerance at seed germination stage.

crop菜（Amaranthus spp。）作为作物家族的一种兴趣，可以在多种土壤条件下生长，例如干旱和高温。但是，盐分的存在会影响种子发芽的过程，这是因为种子发芽的水量减少了。在这项研究中，萌发行为绿穗苋属，绿苋属，苋菜属和苋giganticus盐度条件下L.通过hydrotime模型分析法分析。在发芽测试中，使用了五种NaCl溶液中的水势来诱导盐度条件（0，-0.3，-0.6，-0.9和-1.2 MPa）。在发芽过程中确定了不同物种的耐盐性差异。A. giganticus记录较低θ _ħ（40.30），更负Ψ _B（50）相比于其他物种（-1.55），以及更高的发芽率。本研究中使用的水文时间建模方法用于分析of菜物种，这可能有助于确定种子发芽阶段的作物耐盐性。