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农学学报

农学学报 ›› 2018, Vol. 8 ›› Issue (10): 19-22.doi: 10.11923/j.issn.2095-4050.cjas17050033

• 土壤肥料 资源环境 生态 • 上一篇    下一篇

钠盐胁迫对5种白刺种子耐盐性影响对比分析

迪里木拉提.玉苏甫,阿尔祖古丽BbBb图尔荪,玉苏甫.买买提   

  1. 新疆师范大学地理科学与旅游学院,新疆师范大学地理科学与旅游学院,新疆师范大学地理科学与旅游学院
  • 收稿日期:2017-05-24 修回日期:2017-07-07 接受日期:2017-07-28 出版日期:2018-11-01 发布日期:2018-11-01
  • 通讯作者: 玉苏甫.买买提 E-mail:2507596863@qq.com
  • 基金资助:
    国家自然科学基金项目“新疆白刺属植物生态效益及栽培技术研究”(31260048)；国家自然科学基金项目“新疆胃干河绿洲种棉土壤适宜 性评价研究”(41261056)。

Comparative Analysis of Salt Stress on Germination of Five Nitraria Species

阿尔祖古丽BbBb图尔荪 and 玉苏甫.买买提   

  • Received:2017-05-24 Revised:2017-07-07 Accepted:2017-07-28 Online:2018-11-01 Published:2018-11-01

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摘要： 为治理盐碱地并了解白刺植物耐盐生理能力的差异，以5 种白刺植物种子和不同浓度的钠盐介质为试验材料，采用选种子消毒，再用温水浸泡种子24~48 h 吸水膨胀，培养箱种子培养等方法，施以不同浓度的NaCl 介质对5 种白刺植物种子发芽的影响程度进行研究。结果表明，不同钠盐浓度对5 种白刺种子的绝对发芽率、相对发芽率及发芽指数等指标产生不同影响，其中，钠盐浓度在0~10 g/L 时，5 种白刺种子的绝对发芽率与相对发芽率除西伯利亚白刺外，其余4 种的走势逐渐增大；钠盐浓度在10~25 g/L 时，5 种白刺种子的绝对发芽率与相对发芽率都逐渐降低的变化趋势。钠盐浓度在0~5 g/L 时，发芽指数都逐渐增大，而钠盐浓度在5~10 g/L 时，除盐生白刺、唐古特白刺逐渐增大外，其余3 种发芽指数逐渐降低，说明这2 种白刺的抗盐能力最强。通过对5 种白刺种子的耐盐性对比分析，进一步掌握白刺幼苗在不同浓度钠盐胁迫下的生长及生理响应，为干旱区盐碱地改良的生物措施和受损生态系统的植被恢复提供科学依据。

关键词: 地表温度, 地表温度, 时空变化, 突变, 异常气候, 吉林省

Abstract: To grasp the physiological differences of salt tolerance of five Nitraria species, with different concentrations of sodium salt medium and Nitraria seeds as experimental materials, by means of seed disinfection, soaking in warm water for 24-48 h to absorb water, and cultivation in incubator, we studied the influence of different concentrations of NaCL on seed germination of five Nitraria species. The results showed that different concentrations of sodium salt had different effects on the absolute germination rate, relative germination rate and germination index of Nitraria seeds. Among them, sodium salt concentration of 0-10 g/L gradually increased the absolute germination percentage and relative germination percentage of Nitraria species, except N. sibirica; while sodium salt concentration of 10-25 g/L gradually decreased the absolute germination rate and relative germination rate of the five Nitraria species; sodium salt concentration of 0-5 g/L increased the seed germination index of all the tested species, while sodium salt concentration of 5-10 g/L increased the germination index of N. schoberi and N. tangutorum, but decreased that of N. sibirica, N. roborowskii, N. sphaeroearpa, showing that the salt tolerance of N. schoberi and N. tangutorum was strong. The research results could provide a scientific basis for the improvement of saline-alkali soil and the restoration of damaged ecosystems in arid areas of China.

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