Ecological studies on soil indigenous rhizobia in Egypt. iv. nitrogen fixation ability of native rhizobia and competition among antibioticmarked rhizobial isolates compatible to clover, chickpea and pea crops [electronic resource].

Includes references.

The ability of 131 rhizobial isolates to fix N2 was tested under greenhouse condition in sterilized fertile soil. Majority of the isolates failed to nodulate their host plants (clover, chickpea and pea). Remnants isolates (56.0, 4.8 and 40.0% in respective) successfully formed nodules resulted in significant differences (p=0.05) in symbiosis expressed as N-uptake planr'. A number of 9, 12 and 23 isolates of clover rhizobia were high, moderate and poor N fixers, respectively. On the other hand, only one isolate of chickpea rhizobia could nodulate the roots and improved plant growth. Among pea .hizobia II isolates could form root nodules, 4,2 and 5 isolates proved to be high, moderate and weak N fixers.

Summary in Arabic.

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