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image of Israel Journal of Plant Sciences

The response of 42 commercial and primitive lines of durum and common wheat to inoculation with a mixture of several strains of bacteria of the genus Azospirillum, some of which were isolated from roots of Israeli wild wheats, was studied. Several commercial as well as primitive lines exhibited a significantly higher yield in response to bacterial treatment, due either to an increase in the total number of seeds per plant or to an increase in grain weight. There was no reduction in yield in any of the lines tested. The positive response to the bacterial inoculation was obtained under conditions of both low and high nitrogen levels. The genetic differences between the responding and non- responding lines as well as the possible mechanism of the bacterial effects are discussed.

Affiliations: 1: Department of Plant Genetics, The Weizmann Institute of Science


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