PJB-2011-348
EVALUATING BLB RESISTANCE / AGGRESSIVNESS IN RICE THROUGH BEST INOCULUM CONCENTRATION, INOCULATION AND APPLICATION METHODS
RUKHSANA JABEEN 1*, SAEED UR RAHMAN2 AND AFROS RAIS3
Abstract
The present study was conducted to compare effective method of inoculation, inoculum concentration and application of agrochemicals for evaluating BLB resistance/ aggressiveness and management of BLB disease in rice susceptible varieties through detached leaf assay, Glass house assay and field assay against most aggressive isolate Xoo 105. A comparison of inoculation methods showed that pin prick method produced high infection in all cultivars than clipping and paint brush methods. The pin prick method significantly produced high lesion length on detached leaves as compared to other two methods, while clipping method of inoculation showed high infection producing large lesion in potted plant and field assays. Protective application methods of streptomycin drug showed best results as compare to curative and promising concentration of 108cfu /ml.
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