Next Article in Journal
Silicon Influences Soil Availability and Accumulation of Mineral Nutrients in Various Plant Species
Previous Article in Journal
Phenotypic and Physiological Evaluation of Two and Six Rows Barley under Different Environmental Conditions
Article Menu
Issue 2 (June) cover image

Export Article

Open AccessArticle
Plants 2018, 7(2), 40;

Allelopathic Responses of Rice Seedlings under Some Different Stresses

Agricultural Genetics Institute, Pham Van Dong, Tu Liem, Hanoi 123000, Vietnam
Graduate School for International Development and Cooperation (IDEC), Hiroshima University, Higashi-Hiroshima 739-8529, Japan
Plant Resource Center, An Khanh, Hoai Duc, Hanoi 152900, Vietnam
Post Graduate Training Department, Vietnam Academy of Agricultural Sciences, Hanoi 128200, Vietnam
Institute of Biomedical and Pharmaceutical Applied Research Centre, Vietnam Military Medical University (VMMU), Hanoi 150000, Vietnam
Author to whom correspondence should be addressed.
Received: 5 February 2018 / Revised: 19 April 2018 / Accepted: 20 April 2018 / Published: 8 May 2018
Full-Text   |   PDF [580 KB, uploaded 24 May 2018]   |  


The objective of this study was to evaluate the allelopathic responses of rice seedlings under submergence stress at different temperatures (10, 25, 32, and 37 °C). The results showed that a wide range of allelopathic responses of rice seedlings depended on varieties and stress conditions, with temperature was being a key factor. It showed that the extracts of rice seedlings induced significant suppression on lettuce and radish seedling germination, but had negligible allelopathic effects on growth of barnyardgrass, whilst the emergence and growth of natural weeds was stimulated. In contrast, the root exudates of Koshihikari rice seedlings (K32) at 32 °C reduced the number of total weeds by ≈60.0% and the total dry weight of weeds by 93.0%; i.e., to a greater extent than other root exudates. Among the 13 identified phenolic acids, p-hydroxybenzoic, vanillic, syringic, sinapic and benzoic acids—at concentrations of 0.360, 0.045, 3.052, 1.309 and 5.543 μg/mL might be involved in allelopathic responses of K32, inhibiting the growth of barnyardgrass and natural weeds. Findings of the present study may provide useful information on allelopathic responses of rice under environmental stresses and thus further understand of the competitive relationships between rice and weeds under natural conditions. View Full-Text
Keywords: allelopathy; allelochemical; rice; environmental stress; barnyardgrass; weeds; phenolic acids allelopathy; allelochemical; rice; environmental stress; barnyardgrass; weeds; phenolic acids

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Khanh, T.D.; Anh, L.H.; Nghia, L.T.; Huu Trung, K.; Bich Hien, P.; Minh Trung, D.; Dang Xuan, T. Allelopathic Responses of Rice Seedlings under Some Different Stresses. Plants 2018, 7, 40.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Plants EISSN 2223-7747 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top