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摘要翻译：
目的：评价和比较6种相思在不同NaCl浓度下的种子萌发反应，为选择和培育耐盐基因型提供依据。方法：采用5种盐胁迫处理:0、100、200、300和400毫米NaCl对种子萌发进行了评价。记录10d内的校正发芽率(GC)、发芽率指数(GRI)和平均发芽时间(MGT)。结果：随着NaCl浓度的增加，各树种的发芽率均显著降低。但耐盐性的种间变异显著。在中等盐胁迫下（NaCl浓度200 mM）耐受性变化最大，发芽率的下降在蓝藻和剑水蚤中表现得更明显。尽管raddiana仍然是最有趣的，但它在本研究所研究的所有物种中保持了最高的发芽百分率(GC=80%)和发芽速度，即使在高盐水平下也是如此。本种至少在生命周期的这一阶段对盐环境表现出特殊的适应性，可推荐在盐害地区建立人工林。另一方面，当未发芽的种子从NaCl处理转移到蒸馏水中时，它们的发芽恢复很大，没有滞后期，而且速度很快。这表明萌发抑制与可逆渗透胁迫诱导休眠有关，而不是特定的离子毒性。结论：高浓度NaCl胁迫下的种子萌发能力表明，研究物种，尤其是耐盐性最强的种子，可以在盐渍化土壤中萌发，并可用于受盐渍化影响的干旱地区的恢复。
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英文标题：
《Comparative Salt Tolerance Study of Some Acacia Species at Seed
Germination Stage》
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作者：
Khalil Cherifi, El Houssein Boufous, Hassan Boubaker, Fouad Msanda
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最新提交年份：
2016
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分类信息：
一级分类：Quantitative Biology 数量生物学
二级分类：Other Quantitative Biology 其他定量生物学
分类描述：Work in quantitative biology that does not fit into the other q-bio classifications
不适合其他q-bio分类的定量生物学工作
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英文摘要：
Objective: The purpose of this study was to assess and compare the seed germination response of six Acacia species under different NaCl concentrations in order to explore opportunities for selection and breeding salt tolerant genotypes. Methodology: Germination of seeds was evaluated under salt stresses using 5 treatment levels: 0, 100, 200, 300 and 400 mM of NaCl. Corrected germination rate (GC), germination rate index (GRI) and mean germination time (MGT) were recorded during 10 days. Results: The results indicated that germination was significantly reduced in all species with the increase in NaCl concentrations. However, significant interspecific variation for salt tolerance was observed. The greatest variability in tolerance was observed at moderate salt stress (200 mM of NaCl) and the decrease in germination appeared to be more accentuated in A. cyanophylla and A. cyclops. Although, A. raddiana, remains the most interesting, it preserved the highest percentage (GC = 80%) and velocity of germination in all species studied in this study, even in the high salt levels. This species exhibited a particular adaptability to salt environment, at least at this stage in the life cycle and could be recommended for plantation establishment in salt affected areas. On the other hand, when ungerminated seeds were transferred from NaCl treatments to distilled water, they recovered largely their germination without a lag period and with high speed. This indicated that the germination inhibition was related to a reversible osmotic stress that induced dormancy rather than specific ion toxicity. Conclusion: This ability to germinate after exposure to higher concentrations of NaCl suggests that studied species, especially the most tolerant could be able to germinate under the salt affected soils and could be utilized for the rehabilitation of damaged arid zones.
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PDF链接：
https://arxiv.org/pdf/1610.06033
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