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植物研究 ›› 2019, Vol. 39 ›› Issue (5): 716-721.doi: 10.7525/j.issn.1673-5102.2019.05.010

• 研究报告 • 上一篇    下一篇

不同浓度NaCl处理对灰绿藜种子萌发及幼苗生长发育的影响

任家博1, 闻志彬2   

  1. 1. 喀什大学生命与地理科学学院, 喀什 844006;
    2. 中国科学院新疆生态与地理研究所, 乌鲁木齐 830011
  • 收稿日期:2019-01-17 出版日期:2019-09-05 发布日期:2019-07-16
  • 通讯作者: 闻志彬 E-mail:zhibinwen@ms.xjb.ac.cn
  • 作者简介:任家博(1998-),男,本科,主要从事藜科植物逆境生理研究。
  • 基金资助:
    中国科学院大学生创新实践训练计划(20175050011)

Effect of different NaCl contents on Seed Germination and Seeding Growth of Chenopodium glaucum L.

REN Jia-Bo1, WEN Zhi-Bin2   

  1. 1. College of Biology and Geography Science, Kashgar University, Kashgar 844006;
    2. Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011
  • Received:2019-01-17 Online:2019-09-05 Published:2019-07-16
  • Supported by:
    Innovative practice training Program for College students of the Chinese Academy of Sciences(20175050011)

摘要: 灰绿藜是广泛分布于中低度盐碱地的一年生经济盐生植物。通过系统研究不同浓度NaCl处理对灰绿藜种子萌发、幼苗生长发育以及根、茎和叶中Na+浓度的影响,初步阐明灰绿藜对不同浓度NaCl处理的响应机制。结果表明,与对照相比,随着NaCl浓度的增大,灰绿藜的种子萌发率和单位时间内种子萌发数量均呈下降趋势,种子的萌发时间也会相应延长,种子在500 mmol·L-1 NaCl处理下基本不萌发。最适合灰绿藜幼苗生长的浓度是50 mmol·L-1,其次是0和100 mmol·L-1。高浓度(大于200 mmol·L-1) NaCl处理过的灰绿藜植株的开花(结果)早于未处理或低浓度(50-150 mmol·L-1) NaCl处理。随着基质中NaCl浓度的升高,植株的Na+泌出量也呈上升趋势,其中叶片泌出量的增加最为明显,在处理浓度升高至200 mmol·L-1时达到最高值。

关键词: 灰绿藜, NaCl胁迫, Na+, 植株生长, 盐渍化

Abstract: Chenopodium glaucum L. is an annual economic halophyte widely distributed in middle and low saline-alkali land. In order to elucidate the response of C.glaucum L. to different contents of NaCl treatment, we studied the effect of seed germination and seeding growth and Na+ content in roots, stems and leaves of the plants under different NaCl contents. With the increase of NaCl, the seed germination rate and the number of seed germination per unit time were declining, and the germination time of the seeds were prolonging compared with the control group. The seeds did not germinate under 500 mmol·L-1 NaCl and the optimum content for germination was 50 mmol·L-1, followed by control and 100 mmol·L-1 NaCl. The plants treated with high bloom(fructify) sooner than the untreated or low concentration treatment. With the increase of the NaCl in substrate, the amount of Na+ secreted in plants showed an upward trend and reached the highest value when the treatment concentration increased to 200 mmol·L-1, evidently in leaves.

Key words: Chenopodium glaucum L., NaCl stress, Na+, plant growth, salinization

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