| Titles |
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English :
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Isolation and identification of some local isolates of Bradyrhizobium sp. (Lupinus) using serological and antibiotic resistance markers and their symbiotic performance under different levels of N-fertilization
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Arabic :
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تعريف وتصنيف عزلات من البرادى ريزوبيم باستخدام طريقتى التصنيف السيرولوجى والمقاومة للمضادات الحيوية ومدى تأثر عملية التثبيت الحيوى للأزوت على نمو نباتات الترمس فى وجود مستويات مختلفة من التسميد النيتروجينى
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| Abstract |
From eight isolates of Bradyrhizobium sp. (Lupinus) (were selected from many isolates on the basis of their N2-fixation efficient), four different groups were obtained and identified according to their sensitivity and resistance to antibiotics (IAR). On the basis of serological analysis, the representative isolates of IAR groups showed compatibility, indicating the possible grouping of indigenous isolates of lupin rhizobia into specific groups based on serological and IAR profiles of the isolates. Variations among indigenous rhizobial populations of the isolates from lupin was found, and showed that there is genetic potential to improve strain performance within rhizobial population. In order to evaluate the symbiotic performance of selected strains, a field experiment was conducted in two locations under different levels of N-fertilizer. The results showed that the Rhizobium inoculation and N-fertilizer had low effect in increasing the biomass and grain yield of white lupin cultivar. No interaction was observed between inoculation and N-fertilizer levels in all studied parameters. The biomass and seed yield tended to be greater with Rhizobium inoculation than with N-fertilizer. The results also indicated the potential for improvement of N2-fixation by lupin through the application of efficient rhizobia strains such as ARC 401 and ARC 408
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| Publication year |
2004
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| Pages |
6569-6579
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| Availability location |
Soils, Water and Environment Research Institute, ARC معهد بحوث الاراضى والمياه والبيئة
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| Availability number |
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| Organization Name |
Soil, Water and Environment Research Institute (SWERI)
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| City |
Mansoura
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| serial title |
Mansoura University Journal of Agricultural Sciences
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| ISSN |
1110-0346
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| Department |
Agricultural Microbiology Research
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| Author(s) from ARC |
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| Agris Categories |
Soil biology
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AGROVOC
TERMS |
Indigenous organisms.
Lupinus albus.
Nitrogen fertilizers.
Rhizobium.
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| Proposed Agrovoc |
Competition;
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| Publication Type |
Journal
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