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Two Strains of Pseudomonas eriobotryae Isolated from Loquat Cankers in California. Mingtan Lai, Plant Pathologist, Bureau of Plant Pathology, California Department of Agriculture, Sacramento 95814; Carl W. Morin(2), and C. G. Weigle(3). (2)(3)Agricultural Biological Technician, and Program Supervisor, respectively, Bureau of Plant Pathology, California Department of Agriculture, Sacramento 95814. Phytopathology 62:310-313. Accepted for publication 1 October 1971. DOI: 10.1094/Phyto-62-310.

Two strains of Pseudomonas eriobotryae have been isolated from cankered loquat trees in California. Strain A produces brown pigment, does not liquefy gelatin, produces pectinase, and is phage-susceptible. Strain B produces no brown pigment, liquefies gelatin, does not produce pectinase, and is phage-resistant. Both strains, however, are serologically related, and both are pathogenic on loquat.