Allelopathy activity of wild Atriplex species on germination and seedling growth of Portulaca oleracea L.
El-Halawany, E., El-Zayat, M., El-Amier, Y., El Hayyany, L. (2019). Allelopathy activity of wild Atriplex species on germination and seedling growth of Portulaca oleracea L.. EKB Journal Management System, 45(4), 8-13. doi: 10.21608/mjb.2019.462671
El-Sayed F. El-Halawany; Mostafa M. El-Zayat; Yasser A. El-Amier; Luay Y. El Hayyany. "Allelopathy activity of wild Atriplex species on germination and seedling growth of Portulaca oleracea L.". EKB Journal Management System, 45, 4, 2019, 8-13. doi: 10.21608/mjb.2019.462671
El-Halawany, E., El-Zayat, M., El-Amier, Y., El Hayyany, L. (2019). 'Allelopathy activity of wild Atriplex species on germination and seedling growth of Portulaca oleracea L.', EKB Journal Management System, 45(4), pp. 8-13. doi: 10.21608/mjb.2019.462671
El-Halawany, E., El-Zayat, M., El-Amier, Y., El Hayyany, L. Allelopathy activity of wild Atriplex species on germination and seedling growth of Portulaca oleracea L.. EKB Journal Management System, 2019; 45(4): 8-13. doi: 10.21608/mjb.2019.462671

Allelopathy activity of wild Atriplex species on germination and seedling growth of Portulaca oleracea L.

Mansoura Journal of Biology
Volume 45, Issue 4, December 2019, Pages 8-13    PDF (705.29 K)
Document Type: Original Article
DOI: 10.21608/mjb.2019.462671
Authors
El-Sayed F. El-Halawany* 1; Mostafa M. El-Zayat1; Yasser A. El-Amier1; Luay Y. El Hayyany2
1Botany Department, Faculty of Science, Mansoura University, Mansoura, Egypt
2Expert in Units of Genetics Engineering and Biotechnology, Mansoura University
Abstract
Genus Atriplex (family Chenopodiaceae) is global distribution and annuals, herbaceous perennials or shrubs, with mealy crust. The present study aimed to estimate the phytochemical constituent and to evaluate the antioxidant as well as allelopathic potential of four Atriplex species growing in the Deltaic Mediterranean coast (Atriplex halimus L., A. lindleyi Moq., A. portulacoides  L. and A. semibaccata R. Br). The antioxidant activity was measured using DPPH assay while the allelopathic potential of the Atriplex species was studied on the germination of Portulaca oloraceae. The obtained results revealed that A. lindleyi was the richest in its phytochemical constituents among the other studied Atriplex species followed by A. semibaccata, A. portulacoides and A. halimus, respectively. A. lindleyi also expressed the highest antioxidant activity among the studied species (IC50 = 0.59 mg ml-1) followed by A. semibaccata (IC50 = 0.82 mg ml-1), A. portulacoides (IC50 = 1.06 mg ml-1) and A. halimus (IC50 = 1.18 mg ml-1), respectively. The phytotoxicity of the extracts of the studied Atriplex species increased significantly with increasing their concentration. At concentration of 40 mg ml-1 the germination of P. oloraceae reached maximum inhibition of 82.93 and 80.54 %, plumules inhibited by 80 and 76.80% and radicles were inhibited by 93.58 and 92.33% for A. lindleyi and A. semibaccata, respectively. In conclusion Atriplex species could be used as natural antioxidant and biocontrol of weeds.
Keywords
Allelopathy; Atriplex; antioxidants; biocontrol of weeds; secondary metabolites
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