草地学报

草地学报 ›› 2025, Vol. 33 ›› Issue (6): 1807-1816.DOI: 10.11733/j.issn.1007-0435.2025.06.011

• 研究论文 • 上一篇    下一篇

干旱-复水对珍珠猪毛菜幼苗非结构性碳水化合物的影响

董维红1, 王雲霞2, 解婷婷1, 单立山1, 马静1, 王红永1, 何彩3, 张斌3   

  1. 1. 甘肃农业大学林学院, 甘肃 兰州 730070;
    2. 塔里木大学园艺与林学学院, 新疆 阿拉尔 843300;
    3. 武威市林业科学研究院, 甘肃 武威 733000
  • 收稿日期:2024-07-29 修回日期:2024-09-27 出版日期:2025-06-15 发布日期:2025-06-13
  • 通讯作者: 单立山,E-mail:shanls@gsau.edu.cn
  • 作者简介:董维红（2000-），女，汉族，甘肃甘南人，硕士研究生，主要从事荒漠植物生理生态的研究，E-mail：2183724790@qq.com
  • 基金资助:
    国家自然科学基金（32160253，U23A2061）；甘肃省重点研发计划项目（24YFFH002）；甘肃省科技重大专项计划（22ZD6FA052）资助

Effects of Drought and Rehydration on Non-structural Carbohydrates of Salsola Passerina Bunge Seedlings

DONG Wei-hong1, WANG Yun-xia2, XIE Ting-ting1, SHAN Li-shan1, MA Jing1, WANG Hong-yong1, HE Cai3, ZHANG Bin3   

  1. 1. College of Forestry, Gansu Agricultural University, Lanzhou, Gansu Province 730070, China;
    2. College of Horticulture and Forestry, Tarim University, Alar, Xinjiang Province 843300, China;
    3. Wuwei Academy of Forestry, Wuwei, Gansu Province 733000, China
  • Received:2024-07-29 Revised:2024-09-27 Online:2025-06-15 Published:2025-06-13

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摘要： 探究典型荒漠灌木珍珠猪毛菜非结构性碳水化合物（Non-structural carbohydrates，NSC）及组分在各器官的分配随干旱程度的变化特征，对于揭示珍珠猪毛菜幼苗在不同水分胁迫下的碳分配机制有重要意义。本试验以珍珠猪毛菜幼苗为研究材料，设置充分供水（CK，田间持水量的80%左右）、轻度干旱（MD，逐梯度减少浇水量）和重度干旱（SD，不浇水）处理，测定15，30，45 d和复水5 d后不同器官NSC及组分含量，探究其动态变化及其分配规律，以揭示珍珠猪毛菜幼苗各器官间NSC对干旱-复水下的响应机制。结果表明：干旱胁迫15 d后，SD下细根NSC含量显著高于CK下99.43%，MD下59.60%；干旱胁迫45 d后，CK下的茎和细根NSC含量分别低于MD下13.76%，35.40%，SD下28.18%，32.39%。随着胁迫时间的延长，NSC含量的变化主要由可溶性糖引起，更多的NSC分配至细根。复水后，各处理下叶、茎、粗根NSC及其组分含量升高，细根NSC及其组分含量降低。

关键词: 珍珠猪毛菜, 干旱, 复水, 器官, 非结构性碳水化合物

Abstract: Study on the distribution characteristics of non-structural carbohydrates （NSC） and their components in various organs of typical desert shrub Salsola passerina Bunge under varying drought conditions.It is crucial for revealing the carbon allocation mechanisms of S. passerina Bunge seedlings under different water stress conditions. In this experiment， S. passerina Bunge seedlings were used as the study material， with treatments including sufficient water supply （CK， approximately 80% of field capacity）， mild drought （MD， gradually reducing watering）， and severe drought （SD， no watering）. The contents of NSC and its components in different organs were measured at 15， 30， 45 days， and 5 days after rehydration.The response mechanism of NSC among various organs of S. passerina Bunge seedlings under drought-rewatering were revealed by exploring their dynamic changes and distribution pattern. The results showed that After 15d of drought stress， the NSC content of fine roots under SD was 99.43% higher than CK and 59.60% higher than MD； after 45d of drought stress， the NSC contents of stems and fine roots under CK was significantly lower than MD by 13.76% and 35.4% and SD by28.18% and 32.39%， respectively. With the extension of stress time， the contents of NSC changed， which were mainly caused by soluble sugars， and more NSC was allocated to fine roots. After rehydration， the NSC and their compositions were elevated in leaf， stem， and coarse root under each treatment while they were reduced in fine root.

Key words: Salsola passerina Bunge, Drought, Rehydration, Organs, Non-structural carbohydrates

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