SOURCES OF SOYBEAN INFECTION WITH BACTERIAL BLIGHT AND THIRE CONTROL | ||
| Journal of Plant Production | ||
| Article 9, Volume 27, Issue 10, October 2002, Pages 6719-6728 PDF (2.91 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpp.2002.256528 | ||
| 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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