A SURVEY ON NITROGEN FIXING MICROORGANISMS IN SOME GILAN RICE FIELDS AND NITROGEN FIXATION ASSAY

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KHAYATI GH.; ANVARI M.

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Journal: Year:2001 | Volume:7 | Issue:2 Page(s): 79-90

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Title

A SURVEY ON NITROGEN FIXING MICROORGANISMS IN SOME GILAN RICE FIELDS AND NITROGEN FIXATION ASSAY

Author(s)

KHAYATI GH. | ANVARI M. | Issue Writer Certificate

Keywords

NITROGEN FIXING MICROORGANISMSQ4

RICE FIELDSQ3

NITROGEN FIXATION ASSAYQ4

Abstract

Nitrogen-fixing bacteria have an important role in soil fertility. They are used as biofertilizer for agricultural plants. Different types of unrelated gram positive and negative families are categorized in three basic fixer groups: symbionts, free-livings and associative.To determine the accuracy and activity of these bacteria in some Gilan wetland soils, 40 roots and rhizospheric rice soil samples were collected from 5 RICE FIELDS. Isolation and genus identification were performed by selective media, micro Scopic examination and biochemical tests. Nitrogen fixation was assayed by acetylene reduction test. All isolates were associative nitrogen fixer and belonged to Entrobacteriaceae, Pseudomonas and Bacillus genera. The isolates of genus Pseudomonas were dominant and the others (Serratia, Introbacter) were smaller in numbers.Acetylene reduction assay results showed that the nitrogen fixation ability of isolates is weak.

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References

جداسازی و بررسی جلبک های سبز و آبی خاک

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APA: Copy

KHAYATI, GH., & ANVARI, M.. (2001). A SURVEY ON NITROGEN FIXING MICROORGANISMS IN SOME GILAN RICE FIELDS AND NITROGEN FIXATION ASSAY. JOURNAL OF AGRICULTURAL SCIENCES, 7(2), 79-90. SID. https://sid.ir/paper/7989/en

Vancouver: Copy

KHAYATI GH., ANVARI M.. A SURVEY ON NITROGEN FIXING MICROORGANISMS IN SOME GILAN RICE FIELDS AND NITROGEN FIXATION ASSAY. JOURNAL OF AGRICULTURAL SCIENCES[Internet]. 2001;7(2):79-90. Available from: https://sid.ir/paper/7989/en

IEEE: Copy

GH. KHAYATI, and M. ANVARI, “A SURVEY ON NITROGEN FIXING MICROORGANISMS IN SOME GILAN RICE FIELDS AND NITROGEN FIXATION ASSAY,” JOURNAL OF AGRICULTURAL SCIENCES, vol. 7, no. 2, pp. 79–90, 2001, [Online]. Available: https://sid.ir/paper/7989/en

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