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Autecology and Phytochemistry of Genus Amaranthus in the Nile Delta, Egypt |
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M.E. Abu Ziada,
E.F. El-Halawany,
I.A. Mashaly and G.F. Masoud |
Abstract:
The present study deals with the ecology and phytochemistry of three
Amaranthus species, namely: Amaranthus graecizans, A.
lividus and A. viridis. The components of weed vegetation in
the present investigation are 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
planes. Also, 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 analyses together with qualitative and quantitative
analyses of 16 amino acids were also carried out in the investigated plant
species.
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How to cite this article:
M.E. Abu Ziada, E.F. El-Halawany, I.A. Mashaly and G.F. Masoud, 2008. Autecology and Phytochemistry of Genus Amaranthus in the Nile Delta, Egypt. Asian Journal of Plant Sciences, 7: 119-129.
DOI: 10.3923/ajps.2008.119.129
URL: https://scialert.net/abstract/?doi=ajps.2008.119.129
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