干旱区研究

干旱区研究 ›› 2012, Vol. 29 ›› Issue (5): 797-801.

• 植物生理 • 上一篇    下一篇

保水剂对梭梭（Haloxylon ammodendron）、白梭梭（Haloxylon persicum）种子萌发及幼苗根系的影响

李兴1，2, 蒋进1, 宋春武1, 魏震江3, 殷文娟3   

  1. 1. 中国科学院新疆生态与地理研究所，新疆　乌鲁木齐　830011；
    2. 中国科学院研究生院，北京　100049； 3. 新疆农业大学林学与园艺学院，新疆 乌鲁木齐　830052
  • 收稿日期:2011-10-23 修回日期:2011-11-07 出版日期:2012-09-15 发布日期:2012-10-09
  • 通讯作者: 蒋进.E-mail：jiangjin@ms.xjb.ac.cn
  • 作者简介:李兴（1984-），男，陕西榆林人，硕士研究生，主要从事沙漠化防治研究.E-mail：rlgx@163.com
  • 基金资助:

    新疆维吾尔自治区高技术研究发展项目（201133129）

Effect of Super Absorbent Polymer on Seed Germination and Seedling Roots of Haloxylon ammodendron and H. persicum

 LI  Xing1，2, JIANG  Jin1, SONG  Chun-Wu1, WEI  Zhen-Jiang3, YIN  Wen-Juan3   

  1. 1. Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China;
    2. Graduate University, Chinese Academy of Sciences, Beijing 100049, China;
    3. College of Forestry and Horticulture, Xinjiang Agricultural University, Urumqi 830052, China
  • Received:2011-10-23 Revised:2011-11-07 Online:2012-09-15 Published:2012-10-09

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摘要： 在盆栽条件下，研究保水剂对梭梭（Haloxylon ammodendron）、白梭梭（Haloxylon persicum）种子萌发和幼苗根系形态的影响。结果表明：0.05%浓度的保水剂对梭梭、白梭梭种子萌发有明显的促进作用，发芽率较对照分别提高了18.7%和24.0%；0.05%浓度的保水剂能够抑制梭梭幼苗根系的垂直生长，有效促进侧根数量的增加和根系生物量的积累；0.1%浓度保水剂处理下，白梭梭的主根长度、侧根数量、根系生物量均达到最大；保水剂浓度达到0.2%时，梭梭、白梭梭种子萌发和幼苗根系的生长均受到抑制，表明梭梭幼苗生长最适宜的保水剂浓度为0.05%，白梭梭的浓度以0.05%～0.1%为宜。

关键词: 梭梭, （Haloxylon ammodendron）, 白梭梭（Haloxylon persicum）, 保水剂, 种子萌发, 幼苗, 根系, 古尔班通古特沙漠

Abstract: Effect of super absorbent polymer (SAP) on the seed germination and seedling root morphology of Haloxylon ammodendron and H. persicum  was investigated based on a pot experiment. The results showed that, compared with the contrast, the seed germination rates of H. ammodendron and H. persicum were increased by 18.7% and 24.0% respectively when SAP concentration was 0.05%. Vertical growth of seedling roots of H. ammodendron  was inhibited, while the growth and biomass accumulation of lateral roots were promoted when SAP concentration was 0.05%. Root length, lateral root number and root biomass of H. persicum all reached their maximum values at 0.1% SAP concentration. Seed germination and seedling root growth were all inhibited when SAP concentration was 0.2%. It was concluded that the perfect SAP concentration for H. ammodendron growth was 0.05%,and the best effect of SAP concentration for H. persicum varied in a range of 0.05%-0.1%.

Key words: Haloxylon ammodendron, H. persicum, super absorbent polymer (SAP), seed germination, seedling, root, Gurbantunggut Desert