Ecological and Phytochemical Studies on Some Species of Genus Amaranthus in the Nile Delta, Egypt
Mashaly, I., Abu-Ziada, M., El-Halawany, E., Masoud, G. (2008). Ecological and Phytochemical Studies on Some Species of Genus Amaranthus in the Nile Delta, Egypt. EKB Journal Management System, 3(1), 81-91.
Ibrahim Mashaly; Mohamed Abu-Ziada; El-Sayed El-Halawany; Gehan Masoud. "Ecological and Phytochemical Studies on Some Species of Genus Amaranthus in the Nile Delta, Egypt". EKB Journal Management System, 3, 1, 2008, 81-91.
Mashaly, I., Abu-Ziada, M., El-Halawany, E., Masoud, G. (2008). 'Ecological and Phytochemical Studies on Some Species of Genus Amaranthus in the Nile Delta, Egypt', EKB Journal Management System, 3(1), pp. 81-91.
Mashaly, I., Abu-Ziada, M., El-Halawany, E., Masoud, G. Ecological and Phytochemical Studies on Some Species of Genus Amaranthus in the Nile Delta, Egypt. EKB Journal Management System, 2008; 3(1): 81-91.

Ecological and Phytochemical Studies on Some Species of Genus Amaranthus in the Nile Delta, Egypt

Catrina: The International Journal of Environmental Sciences
Article 9, Volume 3, Issue 1, 2008, Page 81-91  XML PDF (743.46 K)
Document Type: Original Article
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Authors
Ibrahim Mashaly email 1; Mohamed Abu-Ziada2; El-Sayed El-Halawany2; Gehan Masoud2
1Faculty of Science, mansoura university
2Botany Department, Faculty of Science, Mansoura University, Egypt
Abstract
The present study deals with some features of ecology and phytochemistry of three Amaranthus
species, namely: Amaranthus graecizans, A. lividus and A. viridis which are naturally growing in the
Nile Delta region of Egypt. The composition of weed vegetation in the present investigation is
classified by cluster analysis into four groups: group A is codominated by Amaranthus graecizans and
Portulaca oleracea, group B is codominated by Amaranthus lividus and Cynodon dactylon, group C is
codominated by Alternanthera sessilis and Echinochloa crus-galli and group D is codominated by
Aster squamatus, Conyza bonariensis and Paspalum disticum. The ordination of the sampled stands
applied by Detrended Correspondence Analysis (DCA) indicated that, the recognized vegetation
groups are markedly distinguishable and having a clear pattern of segregation on the ordination plane.
The application of the Canonical Correspondence Analysis (CCA) showed that, soil texture, porosity,
water-holding capacity, bicarbonate, sodium, soil reaction (pH), organic matter and electrical
conductivity are the most effective soil variables which correlate with the distribution and abundance
of weed vegetation in the study area. The seed germination under different levels of salinity, light,
temperature and humidity is studied for the three investigated species. Phytochemically, the mean
values of moisture, ash, total nitrogen, protein, total lipids, soluble sugars, glucose, sucrose,
polysaccharides and total carbohydrates were determined. The elementary analysis together with
qualitative and quantitative analyses of 16 amino acids were also carried out in the investigated plant
species.
Keywords
Autecology; Phytochemistry; Amaranthus; Vegetation Analysis; seed germination
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