干旱区研究

干旱区研究 >

2010 , Vol. 27 >Issue 5: 699 - 704

DOI: https://doi.org/10.13866/j.azr.2010.05.002

生物资源

腾格里沙漠南缘3种一年生植物出苗率对沙埋和GA3 的响应

  • 刘有军 ,
  • 马全林 ,
  • 张德魁 ,
  • 纪永福 ,
  • 张锦春 ,
  • 刘虎俊
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  • 1.甘肃省治沙研究所 甘肃省荒漠化防治重点实验室, 甘肃 武威 733000
    2.中国科学院寒区旱区环境与工程研究所 沙坡头沙漠研究实验站, 甘肃 兰州 730000
刘有军(1977-), 男, 甘肃平凉人, 主要从事荒漠植物学及种子生态学研究. E-mail: lyjsmallgrass@163.com

收稿日期: 2009-10-27

  修回日期: 2010-06-12

  网络出版日期: 2026-01-09

基金资助

国家自然科学基金(30960062);甘肃省自然科学基金(3ZSO41-A25-015);中国科学院西部之光人才培养计划;国家科技支撑项目(2007BAD46B02)

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Response of Germination Rate of Three Annual Plant Species to Sand Burial Depths and GA3 in Southern Marginal Zone of the Tengger Desert

  • LIU You-jun ,
  • MA Quan-lin ,
  • ZHANG De-kui ,
  • JI Yong-fu ,
  • ZHANG Jin-chun ,
  • LIU Hu-jun
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  • 1. Gansu Key Lab of Desertification Combating ﹠ Gansu Desert Control Research Institute, Wuwei 733000, China
    2. Shapotou Desert Research and Experiment Station, Cold and Arid Regions and Experimental Sci-Tech Engineer Institute, CAS, Lanzhou 730000, China

Received date: 2009-10-27

  Revised date: 2010-06-12

  Online published: 2026-01-09

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摘要

以腾格里沙漠南缘3种一年生植物沙米((Agriophyllum squarrosum)、碟果虫实(Corispermum patelliforme)和五星蒿(Echinopsilon divaricatum)为材料, 对种子进行1 g / L赤霉素(GA3)处理和不进行GA3 处理的沙埋对比实验, 探索其在种子进行GA3 处理前后出苗率随沙埋深度的变化规律。结果表明: ① 无论种子进行GA3 处理与否, 3种一年生植物种子的出苗率都随着沙埋深度的增加呈现下降趋势。Ⓒ 种子不进行GA3 处理, 3种一年生植物最佳沙埋深度是0.5 cm; 种子进行GA3 处理, 最佳沙埋深度依次是0.5 ~ 1 cm, 0.5 ~ 2 cm和0.5 ~ 3 cm。Ⓒ 种子GA3 处理后, 3种一年生植物的出苗率变化受植物种类和沙埋深度影响; 沙米出苗率最大的深度为0.5 cm, 增加量3.2% ; 碟果虫实为0.5 cm, 增加量18.4% ; 五星蒿为2 cm, 增加量为27.4% 。④ 种子GA3 处理后, 3种一年生植物出苗率的沙埋深度分别是沙米0.5 ~ 1 cm, 碟果虫实0.5 ~ 5 cm和五星蒿0.5 ~ 5 cm。

关键词： 一年生植物; 出苗率; 沙埋深度; GA3 处理; 腾格里沙漠

本文引用格式

刘有军 , 马全林 , 张德魁 , 纪永福 , 张锦春 , 刘虎俊 . 腾格里沙漠南缘3种一年生植物出苗率对沙埋和GA3 的响应[J]. 干旱区研究, 2010 , 27(5) : 699 -704 . DOI: 10.13866/j.azr.2010.05.002

Abstract

A sand-burying comparison experiment was carried out to investigate the germination rate of 3 annual plant species under different sand burial depths after the seeds were treated with 1.0 g / L GA3 and water before so-wing. The results are as follows: (1)Germination rate of the 3 desert annual plant species was decreased with the increase of sand burial depth whether the seeds were treated with 1.0 g / L GA3 or water; (2)The optimal sand burial depth of the 3 annual plant species was 0.5 cm after the seeds were treated with distilled water, and their op-timal sand burial depths varied in ranges of 0.5-1.0 cm, 0.5-2.0 cm and 0.5-3.0 cm respectively after the seeds were treated with GA3 ; (3)After the seeds were treated with GA3 , the germination rate of the 3 annual plant species was different and related to sand burial depth. The optimal sand burial depths for increasing the germination rate of Agriophyllum squarrosum, Corispermum patelliforme and Echinopilon divaricatum were 0.5 cm, 0.5 cm and 2.0 cm, and their germination rates were increased by 3.2% , 18.4% and 27.4% , respectively; (4)After the seeds were treated with GA3 , the sand burial depths for increasing the germination rate of these 3 annual plant spe-cies varied in ranges of 0.5-1.0 cm, 0.5-5.0 cm and 0.5-5.0 cm respectively.

Key words： annual plant species; germination rate; sand burial depth; GA3; Tengger desert

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