Impact of Water Retaining Agent on Germination and Seedling Growth of Astragalus Adsurgens Pelleted Seed Under Drought Conditions

YANG Xin-le; WANG Dong-mei; WANG Xiao-feng

doi:10.13961/j.cnki.stbctb.2014.06.024

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Impact of Water Retaining Agent on Germination and Seedling Growth of Astragalus Adsurgens Pelleted Seed Under Drought Conditions

- Impact of Water Retaining Agent on Germination and Seedling Growth of Astragalus Adsurgens Pelleted Seed Under Drought Conditions
- Bulletin of Soiland Water Conservation Vol. 33, Issue 6, Pages: 89-93(2014)
- 作者机构：
  
  1. 北京林业大学水土保持学院水土保持与荒漠化防治教育部重点实验室,北京,100083
  2. 北京林业大学生物科学与技术学院,北京,100083
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2014.06.024
  CLC：
- Published：2014
- 稿件说明：
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YANG Xin-le, WANG Dong-mei, WANG Xiao-feng. Impact of Water Retaining Agent on Germination and Seedling Growth of Astragalus Adsurgens Pelleted Seed Under Drought Conditions[J]. Bulletin of Soiland Water Conservation, 2014, 33(6): 89-93.
DOI：

YANG Xin-le, WANG Dong-mei, WANG Xiao-feng. Impact of Water Retaining Agent on Germination and Seedling Growth of Astragalus Adsurgens Pelleted Seed Under Drought Conditions[J]. Bulletin of Soiland Water Conservation, 2014, 33(6): 89-93. DOI： 10.13961/j.cnki.stbctb.2014.06.024.

摘要

采用不同含量保水剂对沙打旺种子进行丸化

研究了保水剂对丸化沙打旺种子萌发及幼苗的影响。结果表明

萌发及幼苗生长试验中

与对照相比

保水剂含量在7%和9%时

种子萌发速率分别加快了70%和63.19%;保水剂含量在7%时

幼苗根长、根表面积分别提高了19.36%和45.26%。抗旱试验中

沙打旺幼苗底部两片子叶首先出现枯黄萎蔫现象

随着旱情加剧

顶叶出现萎蔫;与对照相比

间苗后第13天

5%和7%处理幼苗枯黄数量分别减少了15.58%和22.07%

幼苗萎蔫速率变化不明显;沙打旺幼苗叶片内脯氨酸、可溶性糖含量随保水剂浓度的提高逐渐减小

7%和9%处理幼苗叶片脯氨酸含量分别降低了13.1%和13.6%;5%

7%和9%处理较对照幼苗叶片可溶性糖含量分别降低了20.33%

22.85%和19.08%。试验结果表明沙打旺丸化添加保水剂适宜含量为7%~9%。

Abstract

Using different amount of water retaining agent to pelletize Astragalus adsurgens seeds

the effects of water retaining agent on pelleted seeds germination and seedlings were studied. By pelletizing

Astragalus adsurgens seed with water retaining agent in different content level

the seedling growing trial and drought-resistant tests were studied. In the germination and seedling growth trial

compared with the control treatment

using water retaining agent at the level of 7%

9% could significantly increase germination rate by 70% and 63.19%

and root length

root surf area increased by 19.36% and 45.26% respectively; In the drought-resistant tests

the bottom leaves of Astragalus adsurgens wilted first

the top leaves showed same symptoms when the soil was much drier. Compared with the control treatment

water retaining agent at the level of 5% and 7%

the quantity of the yellow leaves decreased by 15.58% and 22.07% respectively at 13th day after thinning seedlings; the content of soluble sugar decreased by 13.1% and 13.6% respectively with increase of water retaining agent concentration when water retaining agent was at the level of 7% and 9%; proline was decreased by 20.33%

22.85% and 19.08% respectively at the level of 5%

7% and 9%. The results showed that the appropriate content of water retaining agent was 7%~9% in pelletizing Astragalus adsurgens seed.

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