International Journal of Advanced Biological and Biomedical Research

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Study of Allelopathic Effects of Aquatic Extracts of Swallowwort (Cynanchum Acutum L.) on Germination and Seedling Growth of Wheat

Document Type : Original Article

Authors

Nazanin Faridmarandi 1
Fatemeh Shirzadi 1
Farid Golzardi 2
Tahereh Mojaradi 3

1 Department of Agronomy, Karaj Branch, Islamic Azad University, Karaj, Iran

2 Young Researchers and Elite Club, Karaj Branch, Islamic Azad University, Karaj, Iran

3 Department of Agronomy, Kerman Branch, Shahid Bahonar University, Kerman, Iran

Abstract
A laboratory experiment was conducted to determine the allelopathic effect of residues aqueous extract of two ecotype of swallowwort (Cynanchum acutum L.) on germination traits of wheat (Triticum aestivum L.). A factorial experiment based on a completely randomized design with four replications was conducted at Islamic Azad University of Karaj in 2012. Factors were two swallowwort ecotype (Ghazvin & Moghan), three kinds of tissues (shoot, root and shoot + root) and five concentrations (0, 25, 50, 75 and 100 %) of extracts. Polyethylene glycol (PEG) was used to distinguish between the inhibitory effect of possible allelopathic substances and effects caused by the osmotic potential of the extracts. Results showed that aquatic extract of swallowwort showed different allelopathic effects on germination and seedling growth of wheat. The germination percentage, shoot & root length and seedling weight of wheat decreased with increasing concentration of swallowwort residue. Different concentrations of PEG had no significant effects on studied germination traits, therefore inhibitory effects of extracts can be attributed to an allelochemical effect.

Keywords

ecotype
Concentration
root
Shoot
Inhibitory effects
International Journal of Advanced Biological and Biomedical Research
Volume 2, Issue 4 - Serial Number 4
March and April 2014
Pages 1126-1143

  • Receive Date 28 July 2014

Article View 19,130
PDF Download 6,148

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