Rasmy,, M., EI-Safwani, N. (2002). SOURCES OF SOYBEAN INFECTION WITH BACTERIAL BLIGHT AND THIRE CONTROL. Journal of Plant Production, 27(10), 6719-6728. doi: 10.21608/jpp.2002.256528
M. R. Rasmy,; Nadia A. EI-Safwani. "SOURCES OF SOYBEAN INFECTION WITH BACTERIAL BLIGHT AND THIRE CONTROL". Journal of Plant Production, 27, 10, 2002, 6719-6728. doi: 10.21608/jpp.2002.256528
Rasmy,, M., EI-Safwani, N. (2002). 'SOURCES OF SOYBEAN INFECTION WITH BACTERIAL BLIGHT AND THIRE CONTROL', Journal of Plant Production, 27(10), pp. 6719-6728. doi: 10.21608/jpp.2002.256528
Rasmy,, M., EI-Safwani, N. SOURCES OF SOYBEAN INFECTION WITH BACTERIAL BLIGHT AND THIRE CONTROL. Journal of Plant Production, 2002; 27(10): 6719-6728. doi: 10.21608/jpp.2002.256528
SOURCES OF SOYBEAN INFECTION WITH BACTERIAL BLIGHT AND THIRE CONTROL
Plant Pathol. Res. Inst. Agric Res. Center, Sabahia, Alexandria, Egypt
Abstract
Seed transmission, over wintering and survival of Pseudomonas syringae pv. glycinae on processing soybean were evaluated as well as the spread of the bacteria on alternative host and non-host plants. The bacteria were transmitted at a low rate from soybean seeds to the seedlings. Bacterial density in seeds obtained from systematically infected plants ranged from 110 to 115 cfu/g seed. Surviving bacteria associated with infested soybean debris were found in a higher number when debris was on soil surface compared to the buried debris. Population of the bacteria on alternative host and non-host plants ranged from 0 to 108 cfu/g fresh weight on leguminous plants and from 0 to 100 cfu/g fresh weight or: non-leguminous weeds. The bacteria were not detected in naturally infected soybean seeds when soaked in 0.5% Hcl for 5 hours, 0.25% or 0.05% acidified cupric acetate for 2 minutes or in hot water (50-55°C) for 20-30 minutes. Hot water treatment had significantly improved seed germination. Other treatments were ineffective in inhibiting the bacteria and have varied effects on germination.
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