草地学报 ›› 2026, Vol. 34 ›› Issue (1): 231-238.DOI: 10.11733/j.issn.1007-0435.2026.01.022

• 研究论文 • 上一篇    

不同温度下盐碱胁迫对大籽蒿和野艾蒿种子萌发的影响

皮冬鸽1, 李海燕1, 杨允菲1, 郭健2, 岳秀泉1, 李亚楠1   

  1. 1. 东北师范大学草地科学研究所/植被生态科学教育部重点实验室/吉林松嫩草地生态系统国家野外科学观测 研究站, 吉林 长春 130024;
    2. 徐州工程学院环境工程学院, 江苏 徐州 221018
  • 收稿日期:2025-01-10 修回日期:2025-06-09 发布日期:2025-12-24
  • 通讯作者: 李海燕,E-mail:lihy697@nenu.edu.cn
  • 作者简介:皮冬鸽(2002-),女,汉族,吉林四平人,硕士研究生,主要从事植物种群生态学研究,E-mail:3214979998@qq.com;
  • 基金资助:
    科技基础资源调查专项(2024FY100300);国家自然科学基金(32171682,32201477);“111”引智基地资助

Effects of Saline-alkali Stress on Seed Germination of Artemisia sieversiana and A. lavandulifolia under Different Temperatures

PI Dong-ge1, LI Hai-yan1, YANG Yun-fei1, GUO Jian2, YUE Xiu-quan1, LI Ya-nan1   

  1. 1. Institute of Grassland Science, Ministry of Education Key Laboratory of Vegetation Ecology, Jilin Songnen Grassland Ecosystem National Observation and Research Station, Northeast Normal University, Changchun, Jilin Province 130024, China;
    2. Xuzhou University of Technology, School of Environmental Engineering, Xuzhou, Jiangsu Province 221018, China
  • Received:2025-01-10 Revised:2025-06-09 Published:2025-12-24

摘要: 本研究选取松嫩草地中两种常见蒿属植物大籽蒿(Artemisia sieversiana Ehrh. ex Willd.)和野艾蒿(Artemisia lavandulifolia DC.)种子为研究对象,在3组不同昼/夜变温条件(5/15℃,15/25℃和25/35℃)下,通过模拟4种不同浓度(0,12.5,25,50 mmol·L-1)的中性盐(NaCl)、碱性盐(Na2CO3)以及复合盐碱(NaCl+Na2CO3)胁迫,探究不同温度下盐碱胁迫对大籽蒿和野艾蒿种子发芽率、发芽速率、发芽势的影响。结果表明,大籽蒿和野艾蒿种子萌发均受到温度、盐碱胁迫、物种及其绝大部分互作效应的显著影响(P<0.05)。大籽蒿种子发芽率、发芽速率、发芽势均随温度升高先上升后下降,最适萌发温度为15/25℃;野艾蒿种子发芽率、发芽速率、发芽势则随温度升高而下降,最适温度为5/15℃。大籽蒿种子萌发能力在各温度处理下均随3种盐碱溶液浓度增加而下降,且在中高浓度下显著低于CK(P<0.05);野艾蒿种子萌发特征则在低温下随3种盐碱溶液浓度的增加先上升后下降,且在25.0 mmol·L-1单一盐溶液以及12.5 mmol·L-1单一碱溶液和混合溶液处理下均会显著促进野艾蒿种子萌发(P<0.05)。在3种不同溶液中,两物种低浓度时萌发情况无显著差异,但整体上高浓度胁迫下混合溶液处理下发芽率明显低于单一盐、碱溶液,且盐碱胁迫和温度的交互作用产生双重抑制影响。

关键词: 耐盐碱植物, 种子萌发, 盐碱化, 温度

Abstract: In this study, the effects of saline-alkali stress on seed germination characteristics of two common Artemisia species from the Songnen grassland-Artemisia sieversiana Ehrhart ex Willd. and A. lavandulifolia DC. were investigated under three groups of different day/night temperature conditions (5/15℃, 15/25℃, and 25/35℃). Four concentrations (0, 12.5, 25, and 50 mmol·L-1) of neutral salt (NaCl), alkaline salt (Na2CO3), and composite saline-alkali solutions (NaCl+Na2CO3) were simulated to assess germination percentage, germination rate, and germination potential. The results indicated that seed germination in both A. sieversiana and A. lavandulaefolia was significantly influenced by temperature, saline-alkali stress, species, and the most interactive effects (P<0.05). The germination percentage rate, and potential of A. sieversiana seeds first decreased and then declined with the increase of temperature, and the optimal germination temperature condition was 15/25℃. A. lavandulifolia exhibited declining germination indicators with the increase of temperature, showing optimal performance at 5/15℃. The germination capacity of A. sieversiana seeds decreased with increase of the concentration of the three saline-alkali solutions under all the tested temperature treatments, and was significantly lower than CK at medium-high concentrations (P<0.05). The germination characteristics of A. lavandulifolia seeds increased first and then decreased with the increase of the concentration of three saline alkali solutions at low temperature. Treatment with 25.0 mmol·L-1 single salt solution (NaCl), 12.5 mmol·L-1 single alkali solution (Na2CO3), and mixed saline-alkali solutions (NaCl + Na2CO3) significantly promoted seed germination compared to the control (P<0.05). At low concentrations across the three solution types, both species showed no significant differences in germination performance. However, under stress with high-concentration of mixed saline-alkali solutions resulted in markedly lower germination rates compared to individual salt or alkali treatments. Additionally, the interactive effects of saline-alkali stress and temperature exerted dual inhibitory impacts on seed germination.

Key words: Salt tolerant plants, Seed germination, Salinization and alkalization, Temperature

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