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PJB-1990-12
CHARACTERIZATION OF AGROBACTERIUM TUMEFACIENS BIOTYPES ISOLATED FROM JORDAN
Abstract
Out of 183 isolates from soil and plant tumors from different locations in Jordan , 12 pathogenic isolates of Agrobacterium tumefaciens were obtained from soil , 29 from grapevines , 6 from apple , 2 from pear and 3 from peach. Biotype I was predominant . Eighteen isolates were included in biotype III and 12 isolates in biotype II. Grapevine isolates showed their tumorigenicity mostly on grapevine , some of them were able to transform tobacco and kalanchoe cells. Peach isolates were highly virulent with a wide host range.
