E-ISSN 2090-0503 | ISSN 1687-7497
 

Original Research 


CYANOBACTERIA MEDIATED PROMOTION OF GROWTH AND SOME METABOLIC ACTIVITIES OF BARLEY SEEDLINGS

Amal H. El-Naggar Mohamed El-Anwar H. Osman Mostafa M. El-Sheekh Saly F. Gheda.

Abstract
The present work was directed towards evaluating the potential of Nostoc entophytum and Oscillatoria angustissima as biofertilizers for barley seedlings, with emphasis on their substitution of the costly chemical fertilizer in pot experiments. Inoculation of a suspension of both species and their combination of the two species did not change the germination percentage (100%) of barley seedlings and significantly stimulated the other measured growth parameters and photosynthetic pigments. Addition of 1% Nostoc entophytum combined with 100% chemical fertilizer induced the highest stimulation in all pigment fractions (chl.a, chl.b and carotenoids), protease and amylase activities. However, the combination between cyanobacterial mixture and the recommended dose or half the recommended dose of chemical fertilizer produced the highest stimulation in carbohydrates (D.R.V. and T.R.V.), nitrogen and phosphorus content of barley seedlings. Biofertilization combined with half the recommended dose of the chemical fertilizer was usually more effective than the addition of the full rate of chemical fertilizer, which may save 50% of the costly chemical fertilizer. Analysis of the two tested cyanobacteria showed that nitrogen fixation capacity, production of exopolysaccharides, contents of auxin and cytokinin were higher in N. entophytum than O. angustissima, whereas the latter contained more gibberellins. These data may explain the different influences of the two cyanobacteria on growth of barley seedlings.

Key words: Barley, Biofertilizers, Cyanobacteria, Plant growth, Phytohormones


 
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Pubmed Style

Amal H. El-Naggar Mohamed El-Anwar H. Osman Mostafa M. El-Sheekh Saly F. Gheda. CYANOBACTERIA MEDIATED PROMOTION OF GROWTH AND SOME METABOLIC ACTIVITIES OF BARLEY SEEDLINGS. Egypt. J. Exp. Biol. (Bot.). 2014; 10(1): 63-73.


Web Style

Amal H. El-Naggar Mohamed El-Anwar H. Osman Mostafa M. El-Sheekh Saly F. Gheda. CYANOBACTERIA MEDIATED PROMOTION OF GROWTH AND SOME METABOLIC ACTIVITIES OF BARLEY SEEDLINGS. http://www.egyseb.net//?mno=186595 [Access: November 03, 2020].


AMA (American Medical Association) Style

Amal H. El-Naggar Mohamed El-Anwar H. Osman Mostafa M. El-Sheekh Saly F. Gheda. CYANOBACTERIA MEDIATED PROMOTION OF GROWTH AND SOME METABOLIC ACTIVITIES OF BARLEY SEEDLINGS. Egypt. J. Exp. Biol. (Bot.). 2014; 10(1): 63-73.



Vancouver/ICMJE Style

Amal H. El-Naggar Mohamed El-Anwar H. Osman Mostafa M. El-Sheekh Saly F. Gheda. CYANOBACTERIA MEDIATED PROMOTION OF GROWTH AND SOME METABOLIC ACTIVITIES OF BARLEY SEEDLINGS. Egypt. J. Exp. Biol. (Bot.). (2014), [cited November 03, 2020]; 10(1): 63-73.



Harvard Style

Amal H. El-Naggar Mohamed El-Anwar H. Osman Mostafa M. El-Sheekh Saly F. Gheda (2014) CYANOBACTERIA MEDIATED PROMOTION OF GROWTH AND SOME METABOLIC ACTIVITIES OF BARLEY SEEDLINGS. Egypt. J. Exp. Biol. (Bot.), 10 (1), 63-73.



Turabian Style

Amal H. El-Naggar Mohamed El-Anwar H. Osman Mostafa M. El-Sheekh Saly F. Gheda. 2014. CYANOBACTERIA MEDIATED PROMOTION OF GROWTH AND SOME METABOLIC ACTIVITIES OF BARLEY SEEDLINGS. THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Botany), 10 (1), 63-73.



Chicago Style

Amal H. El-Naggar Mohamed El-Anwar H. Osman Mostafa M. El-Sheekh Saly F. Gheda. "CYANOBACTERIA MEDIATED PROMOTION OF GROWTH AND SOME METABOLIC ACTIVITIES OF BARLEY SEEDLINGS." THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Botany) 10 (2014), 63-73.



MLA (The Modern Language Association) Style

Amal H. El-Naggar Mohamed El-Anwar H. Osman Mostafa M. El-Sheekh Saly F. Gheda. "CYANOBACTERIA MEDIATED PROMOTION OF GROWTH AND SOME METABOLIC ACTIVITIES OF BARLEY SEEDLINGS." THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Botany) 10.1 (2014), 63-73. Print.



APA (American Psychological Association) Style

Amal H. El-Naggar Mohamed El-Anwar H. Osman Mostafa M. El-Sheekh Saly F. Gheda (2014) CYANOBACTERIA MEDIATED PROMOTION OF GROWTH AND SOME METABOLIC ACTIVITIES OF BARLEY SEEDLINGS. THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Botany), 10 (1), 63-73.