SOURCES OF SOYBEAN INFECTION WITH BACTERIAL BLIGHT AND THIRE CONTROL | ||||
Journal of Plant Production | ||||
Article 9, Volume 27, Issue 10, October 2002, Page 6719-6728 PDF (2.91 MB) | ||||
Document Type: Original Article | ||||
DOI: 10.21608/jpp.2002.256528 | ||||
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Authors | ||||
M. R. Rasmy,; Nadia A. EI-Safwani | ||||
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. | ||||
Keywords | ||||
Bacterial blight of soybean; Seed transmission | ||||
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