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首页> 外文期刊>Plant and Soil >Salinity and Temperature Effects on Germination for Three Salt-resistant Euhalophytes, Halostachys caspica, Kalidium foliatum and Halocnemum strobilaceum
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Salinity and Temperature Effects on Germination for Three Salt-resistant Euhalophytes, Halostachys caspica, Kalidium foliatum and Halocnemum strobilaceum

机译：盐度和温度对三种耐盐性真盐生植物，盐生嗜盐菌，叶形钾和球根忍冬的萌发的影响

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摘要

The effects of three salinities (0, 100 and 500 mM NaCl) and four constant temperatures (10, 20, 30 and 35 C) on seed germination of Halostachys caspica (M. B.) C. A. Mey., Kalidium foliatum (Pall.) Mop. and Halocnemum strobilaceum (Pall.) Bieb. wereinvestigated. After seeds were treated with different concentrations of NaCl at constant temperatures of 10–35 C for 16 days, ungerminated seeds were transferred to distilled water for 10 days to investigate the total germination; after this time, the ungerminated seeds from the 10 and 20 C treatments were then moved to 35 C for another 5 days to determine the final germination. The three plant species in the present experiment are salt-resistant euhalophytes growing in high saline soils in the ZhungurBasin in Xinjiang, a northwest province of China.Compared with germination under control conditions, germination percentages of all three species were not affected by 100 mM NaCl at 10–35 C, while severely inhibited by 500 mM NaCl; germination percentages were very low at 10 C up to 100 mM NaCl for all species; the optimum temperature for germination of H. caspica and K. foliatum was 20–30 C, while 35 C for H. strobilaceum, up to 100 mM NaCl; seeds did not suffer ion toxicity for all species, as evidenced by the high total germination after ungerminated seeds pretreated with 500 mM NaCl were transferred to distilled water at constant temperatures of 10–35 C for 10 days, and the high final germination after the ungerminated seeds from the 10 and 20C treatments were subsequently moved to 35 C for another 5 days; Halostachys caspica had greater sensitivity to increasing temperatures from 10 and 20 C to 35 C compared with the other two species.
机译：三种盐度（0、100和500 mM NaCl）和四个恒定温度（10、20、30和35 C）对Halostachys caspica（M. B.）C. A. Mey。，Kalidium foliatum（Pall。）拖把种子萌发的影响。和Halocnemum strobilaceum（Pall。）Bieb。被调查。将种子在10–35 C的恒定温度下用不同浓度的NaCl处理16天后，将未发芽的种子转移到蒸馏水中10天，以调查总发芽率。在这段时间之后，将来自10和20 C处理的未萌发种子移至35 C再保持5天，以确定最终萌发状态。本实验中的三种植物是在中国西北部地区的新疆准格尔盆地高盐分土壤中生长的耐盐真核生物，与控制条件下的发芽相比，这三种植物的发芽率均不受100 mM NaCl的影响。在10–35 C时，同时被500 mM NaCl严重抑制;对于所有物种，在高达100 mM NaCl的条件下，发芽率在10 C时都非常低;孢子藻和叶形衣藻的最佳萌发温度为20–30 C，而球根藻的最适发芽温度为35 m，NaCl最高可达100 mM。种子并没有对所有物种都具有离子毒性，这可以通过用500 mM NaCl预处理的未发芽种子在10-35 C的恒定温度下转移到蒸馏水中10天，以及未发芽后的最终高发芽来证明，其发芽率高。随后将来自10和20 C处理的种子移至35 C再保持5天;与其他两个物种相比，Halostachys caspica对温度从10和20 C升高到35 C的敏感性更高。

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