الفهرس 
AcknowledgmentOnly 14 pages are availabe for public view
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Abstract
In this study 100 common bean native rhizobial isolates were isolated fount three different cultivation regions in Egypt :Ismailia (FLSwedatc. EL Wasfia and Darysa). Giza (Kerdasa) and EL- Menofia (Ashnion and FJ Shoohada). Seventy seven isolates Succeeded to rendulate the common bean Plants (Cultivar Bronco) In the authentication test. the other isolates lost the capacity nodulate the connuon bean plants. The authenticated
(77 isolates) and five standards:
A) PlieflotyVic characterizHon:
Phenotypic characterization was performed in relation to gram congo red . acid production ,salt tolerance. PH tolerance and intrinsic antibiotic resistance (IAR) Profiles. In addition to colon size. texture color . nitrogen fixation and undulation efficiency .