干旱区研究

干旱区研究 ›› 2016, Vol. 33 ›› Issue (5): 1057-1062.doi: 10.13866/j.azr.2016.05.20

• 植物生理 • 上一篇    下一篇

小花棘豆根、茎、叶水浸液对3种草原植物的化感作用

刘利红1, 刘果厚1, 曹瑞1, 王健1, 兰庆1, 李红颖1, 巴图那顺2   

  1. 1.内蒙古农业大学生态环境学院,内蒙古 呼和浩特 010019;
    2.乌审旗农牧业局,内蒙古 嘎鲁图 017300
  • 收稿日期:2016-03-02 修回日期:2016-04-04 出版日期:2016-09-15 发布日期:2025-12-01
  • 作者简介:刘利红(1979-),女,在读博士研究生,主要从事植物多样性保护与利用研究. E-mail: llhong_2007@126.com
  • 基金资助:
    内蒙古自治区科学技术应用项目(20131902)资助

Allelopathy of Aqueous Extracts from Stems,Leaves and Roots of Oxytropis glabra on Seed Germination of Three Common Plant Species in Grasslands

LIU Li-hong1, LIU Guo-hou1, CAO Rui1, WANG Jian1, LAN Qing1, LI Hong-ying1, BA Tu-na-shun2   

  1. 1. College of Ecology and Environment Science,Inner Mongolia Agricultural University,Huhhot 010019,Inner Mongolia,China;
    2. Farming and Animal Husbandry Bureau of Wushen Banner,Ga Lutu 017300,Inner Mongolia,China
  • Received:2016-03-02 Revised:2016-04-04 Published:2016-09-15 Online:2025-12-01

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摘要： 小花棘豆(Oxytropis glabra)是多年生有毒草本植物,在退化的草场上可成为优势杂草,扁蓿豆(Melilotoides ruthenica)、草木樨状黄芪(Astragalus melilotoides)、沙芦草(Agropyron mongolicum)为草原常见优质牧草。以小花棘豆为供体植物,分别研究其不同浓度的根、茎叶水浸液对上述3种受体植物种子发芽的影响。结果表明:根、茎叶水浸液对受体植物发芽率、发芽指数、胚根与胚芽长均有不同程度的化感作用,两种水浸液对3种植物发芽指数的化感效应均强于发芽率,对胚根长的化感效应均强于胚芽长。供体植物的不同部位对不同受体植物的化感效应有明显的差异,茎叶水浸液的化感效应强于根水浸液,综合效应结果显示:3种受体植物对两种水浸液化感作用的敏感性依次为:沙芦草＞草木樨状黄芪＞扁蓿豆。不同质量浓度根、茎叶水浸液对受体植物的影响表明,浓度越大化感效应越强,高质量浓度(≥10 mg·mL-1)水浸液抑制作用显著,低质量浓度水浸液(≤5 mg·mL-1)化感作用不显著。

关键词: 小花棘豆(Oxytropis glabra), 水浸液, 化感效应, 种子发芽

Abstract: Oxytropis glabra is a poisonous perennial herbaceous plant,it can become the dominant weeds on degenerated pastures. Melilotoides ruthenica,Astragalus Melilotoides and Agropyron mongolicum are the common high-quality forage grasses in grasslands. In this paper,O.glabra was taken as the donor plant to study the effects of aqueous extracts from roots,stems and leaves with different concentrations on seed germination of 3 receiver plants. The results show that there was an allelopathy of aqueous extracts from the stems,leaves and roots of O.glabra on the seed germination rate,germination index,plumule length and radicle length of the plants. The allelopathy of the two kinds of aqueous extracts on the germination index was higher than on the seed germination rate,and that on the radicle length was higher than on the plumule length. Allelopathy of different donor parts to the different receiver plants was significantly different,and that of the aqueous extracts from stems and leaves was higher than that from roots. Results showed that the allelopathic sensitivity of the three receiver plants to the two kinds of aqueous extracts was in an order of A.mongolicum>A.melilotoides>M.ruthenicus. The effects of two kinds of aqueous extracts with different mass concentrations on the receiver plants revealed that the higher the concentration was,the stronger the allelopathy would be. The inhibition of aqueous extract with high mass concentration (≥10 mg·mL-1) was significant,but that with low mass concentration (≤5 mg·mL-1) was not significant.

Key words: Oxytropis glabra, aqueous extract, allelopathy, seed germination