|Table of Contents|

Allelopathic Effects of Aqueous Extracts From Different Organs of Caragana intermedia on Seed Germination of Alfalfa(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2014年09期
Page:
67-70
Research Field:
Publishing date:

Info

Title:
Allelopathic Effects of Aqueous Extracts From Different Organs of Caragana intermedia on Seed Germination of Alfalfa
Author(s):
ZHAI De-ping1; CHEN Lin1; YANG Xin-guo1; SONG Nai-ping1; JIANG Qi2
1.Breeding Base for State Key Laboratory of Land Degradation and Ecological Restoration of North-western China,Key Laboratory for Restoration and Reconstruction of Degraded Ecosystem in Northwest China,Ministry of Education,Union Research Center for Ecology and Exploitation of Biological Resource in Western China,Ningxia University,Yinchuan,Ningxia 750021;
2.Institute of Desertification Control,Ningxia Academy of Agriculture and Forestry Sciences,Yinchuan,Ningxia 750002
Keywords:
Caragana intermedia; alfalfa; allelopathy; seed germination
PACS:
S 793.3
DOI:
-
Abstract:
Taking alfalfa as material,the allelopathic effect of aqueous extracts over a range of concentrations 0.5,1.0,5.0,10.0，25.0 mg/mL from root,stem and leaf of Caragana intermedia on the seed germination and seedling growth of alfalfa were studied.The results showed that,all of the aqueous extracts from different organs of Caragana intermedia had allelopathic effects on the seed germination,and the aqueous extracts improved seed germination at low concentration, whereas inhibited at high concentration.Aqueous extracts from root and stem of Caragana intermedia had promotion effect on the growth of radicle and the promotion effect increased first and then decreased with the enrichment of aqueous extracts.Aqueous extracts from root and stem of Caragana intermedia had inhibition effect on the growth of hypocotyl.Aqueous extracts from stem of Caragana intermedia had promotion effect on the growth of radicle and hypocotyl at low concentration,whereas inhibition effect at high concentration.Aqueous extracts from root and leaf of Caragana intermedia had inhibition effect on dry weight of alfalfa seedling at low concentration,inhibition effect at high concentration,while aqueous extracts from stem mainly had promotion effect on it.In general,aqueous extracts from different organs of Caragana intermedia had allelopathic effects on the seed germination of alfalfa,and recommended that interspecific allelopathy should be taken into account in creating caragana-alfalfa artificial compound system.

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Last Update: 2014-08-13