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EI-Khatib, E., Helm, A. (2005). SYMBIOTIC NITROGEN FIXATION PERFORMANCE SCREENING OFR. MEL/LOT/ISOLATES FROM SALINE SOIL AGAINST DIFFERENT VARIETIES OF ALFALFA PLANTS IN TWO TYPES OF SOIL .. Journal of Agricultural Chemistry and Biotechnology, 30(7), 4183-4193. doi: 10.21608/jacb.2005.235844
Elham EI-Khatib; Amal A. Helm. "SYMBIOTIC NITROGEN FIXATION PERFORMANCE SCREENING OFR. MEL/LOT/ISOLATES FROM SALINE SOIL AGAINST DIFFERENT VARIETIES OF ALFALFA PLANTS IN TWO TYPES OF SOIL .". Journal of Agricultural Chemistry and Biotechnology, 30, 7, 2005, 4183-4193. doi: 10.21608/jacb.2005.235844
EI-Khatib, E., Helm, A. (2005). 'SYMBIOTIC NITROGEN FIXATION PERFORMANCE SCREENING OFR. MEL/LOT/ISOLATES FROM SALINE SOIL AGAINST DIFFERENT VARIETIES OF ALFALFA PLANTS IN TWO TYPES OF SOIL .', Journal of Agricultural Chemistry and Biotechnology, 30(7), pp. 4183-4193. doi: 10.21608/jacb.2005.235844
EI-Khatib, E., Helm, A. SYMBIOTIC NITROGEN FIXATION PERFORMANCE SCREENING OFR. MEL/LOT/ISOLATES FROM SALINE SOIL AGAINST DIFFERENT VARIETIES OF ALFALFA PLANTS IN TWO TYPES OF SOIL .. Journal of Agricultural Chemistry and Biotechnology, 2005; 30(7): 4183-4193. doi: 10.21608/jacb.2005.235844

SYMBIOTIC NITROGEN FIXATION PERFORMANCE SCREENING OFR. MEL/LOT/ISOLATES FROM SALINE SOIL AGAINST DIFFERENT VARIETIES OF ALFALFA PLANTS IN TWO TYPES OF SOIL .

Article 3, Volume 30, Issue 7, July 2005, Page 4183-4193  XML PDF (838.55 K)
Document Type: Original Article
DOI: 10.21608/jacb.2005.235844
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Authors
Elham EI-Khatib1; Amal A. Helm2
1Agric. Res. Microblo!. Dept., Soils, Water and Environ., Res. Inst., Agric. Res. Center (ARC), Giza, Egypt.
2Field Crop Res.lnst., Agrlc. Res. Center (ARC),Glza, Egypt
Abstract
Two laboratory and greenhouse experiments were conducted to study the
efficiency of six Rhizobium meutot; isolates (2. 4. 11. 12 and 15) and strain ARC·1
isolated from witd alfalfa plants of salt affected soil to symbiotic performance with 5
varieties alfalfa (Medicago sativa) plants (Ismailia 1. Ismailia 2, Nitrogen fixers, Diablo
and EI.Wady EI-gedid): in two soli types.
The results showed that, all isolates withstand high concentration of NaCI
more than strain ARC-1. Isolate No.15 was the most resistant one to 7.5% NaCI and
different antibiotics concentration.
The data of symbiotic parameters showed that. the highest values of
nodules number, nodules dry weight and N2-ase activity on plant roots were found
with plants inoculated with slrein ARC-1 in two soil types. Also isolate No. 12
recorded the highest shoots dry weight and N-conlent in two soils. The superior
interactions were found between ARC·1 and Ismailia 1 for nodulation status and
isolate No. 12 and Nitrogen fixers variety for shoot dry weight and N-content.

Keywords
Salinity, Atfalfa (Medica go sativa), Rhizobium melilol; Symbiotic nitrogen fixation
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