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http://dx.doi.org/10.12989/aer.2015.4.1.001

Allelopathic effects of red pepper (Capsicum annuum L.) and coriander (Coriandrum sativum L.) on early seedling growth of wheat (Triticum aestivum L.)  

Iqbal, Muhammad Zafar (Department of Botany, University of Karachi)
Ahmed, Lubna (Department of Botany, University of Karachi)
Shafiq, Muhammad (Department of Botany, University of Karachi)
Athar, Mohammad (Department of Food Science and Technology, University of Karachi)
Publication Information
Advances in environmental research / v.4, no.1, 2015 , pp. 1-15 More about this Journal
Abstract
A pot experiment was conducted to assess the effects of red pepper (Capsicum annuum) and coriander (Coriandrum sativum) on seedling growth of wheat (Triticum aestivum). The aqueous extracts treatment of red pepper and coriander showed a significant (p < 0.05) reduction in root, shoot and seedling length, number of leaves and seedling dry weight of wheat (T. aestivum) as compared to control. The inhibitory different effect on growth of wheat (T. aestivum) was directly proportional to the increasing concentration (1, 2, 3, 4 and 5%) of aqueous extracts of red pepper and coriander as compared to control treatment (0%). The root, shoot, seedling length and number of leaves of T. aestivum significantly p < 0.05 decreased at 5% concentration of red pepper as compared to control. The root, shoot and seedling growth of T. aestivum was also significantly reduced at 1, 2, 3, 4 and 5% concentration of coriander as compared to control. The root, shoot and leaves dry weight of T. aestivum at 5% coriander extract treatment concentration decreased as compared to control. The tolerance in seedlings of T. aestivum to red pepper and coriander extract treatment was dose dependent as compared to control. The seedlings of T. aestivum showed low percentage of tolerance to pepper extract treatment than coriander extract treatment.
Keywords
red pepper; coriander; plant extracts; allelopathy; phytotoxicity; seedling growth; wheat;
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