*3.4.1 Fresh shoot weight*

At 28 days after sowing the highest shoot weight (2260 mg) was recorded in plants raised from the seed treated with the bacterial isolate BDISOB01MymR followed by the bacterial isolates BDISOB05MymP (2250 mg), BDISOB45PanP (2173 mg), BDISOB04DinP (2033 mg), BDISOB86FarR (2033 mg), BDISOB07FarR*,* (2033 mg) BDISOB283KisR (1950 mg). But the lowest shoot weight was observed in control (untreated seed) (933 mg) Rest of the isolates were showed moderate fresh shoot weight. Among all bacterial isolates seventeen were statistically similar and others denoted statistically dissimilar (**Table 7**).

#### *3.4.2 Dry shoot weight*

At 28 days after sowing the highest shoot weight (546 mg) was recorded in plants raised from the seed treated with the bacterial isolate BDISOB01Mym*)* followed by the bacterial isolates BDISOB04DinP (473mgmg), BDISOB04KhaP (470 mg), BDISOB92Far (466 mg), BDISOB222GaiR (443 mg) were statistically similar Whereas, the lowest (260 mg) was reorded in the plants raised from untreated seed followed by the plants sprayed with [Bactroban (inducer) + SICOGREEN® (nutrient and hormonal solution) + Hemoxy (Copper fungicide)] (313 mg), BDISOB172ThaR (266 mg), BDISOB07FarR (270 mg), BDISOB86FarR (273 mg), BDISOB70KusR (276 mg), BDISOB54KhuRwere statistically similar. On the otherhand, the plants raised from the seed treated with the bacterial isolatesBDISOB21ChaR (376 mg), BDISOB186KusR (330 mg), BDISOB219GaiR (373 mg), BDISOB21ChaR (376 mg) were statistically similar (**Table 7**).

#### *3.4.3 Fresh root weight*

At 28 days after sowing the highest rootweight (1350 mg) was recorded in plants raised from the seed treated with the bacterial isolate BDISOB45PanPfollowed by the bacterial isolates BDISOB05MymP (1316 mg), BDISOB21ChaR (1306 mg) BDISOB15CumR (1256 mg), BDISOB01MymR (1253 mg), BDISOB92Far (1246 mg), BDISOB16CumR (1213 mg) were statistically similar Whereas, the lowest (830 mg) was recorded in the plants raised from untreated seed followed by thebacterial isolate BDISOB219GaiR (983 mg), plants sprayed with [Bactroban (inducer) + SICOGREEN® (nutrient and hormonal solution) + Hemoxy (Copper fungicide)] (1016 mg), BDISOB30ChaR (1080 mg). Other bacterial isolates were statistically similar (**Table 7**).


*Integrative Advances in Rice Research*


**Table 7.** *Plant growth promotion*

 *by different bacterial isolates antagonistic*

 *to* X. oryzae *pv.* oryzae*.*

*Potential Role of Rice Plant Growth Promoting Phylloplane and Rhizospheric Bacteria… DOI: http://dx.doi.org/10.5772/intechopen.99854*


*\* indicated 5% level of significance.*

*Values in columns followed by the same letters indicate no significant differences.*

#### **Table 8.**

*Effect of some selected antagonistic bacterial isolates on the reduction of lesion length in susceptible check cultivar (IR24) caused by* X. oryzae *pv.* oryzae.

*Potential Role of Rice Plant Growth Promoting Phylloplane and Rhizospheric Bacteria… DOI: http://dx.doi.org/10.5772/intechopen.99854*


#### **Figure 5.**

*Reduction of lesion length by some selected antagonistic bacterial in susceptible check cultivar (IR24). Photographs were taken at 14 days after inoculation.. BDISOB04P (*P. putida*), BDISOB05P (*P. putida*), BDISOB219R (*P. taiwanensis)*, BDISOB221R (*Pseudomonas *sp*.)*], BDISOB222R (*P. plecoglossicida)*, BDISOB258R (*P. putida)*, BDISOB186R (*Pseudomonas *sp*.)*, BDISOB283R (*Pseudomonas fluorescens)*, BDISO04P (*P. putida*), BDISO45R (*Bacillus paramycoides*), BDISO198P (*S. plymuthica*), BDISO135R (*Bacillus sp.*), BDISO148P (*S. marcescens*), BDISOB01R (*B. amyloliquefaciens*), BDISO145P (*S. marcescens*), BDISO158R (*S. marcescens*), BDISOB37R (*P. asaccharolyticum*), BDISOB16R (*P. asaccharolyticum*), BDISOB92R (*Pseudomonas fluorescens)*, BDISOB21R (*S. maltophilia*), BDISOB17R (*Limnolyngbya circumcreta*), BDISOB15R (*P. asaccharolyticum*), BDISOB86R (*E. aerogenes*), BDISOB30R (*P. asaccharolyticum)*, BDISOB07R (*Serratia nematodiphila*), BDISOB12R (*Serratia marcescens*), BDISOB31R (*Serratia marcescens), *BDISOB36R (*Serratia marcescens*), BDISOB46R (*Serratia marcescens*), BDISOB54R (*B. gladioli*), BDISOB70R (*Serratia marcescens*) and BDISOB172R (*B. aerophilus).

### *3.4.4 Dry root weight*

At 28 days after sowing the highest dry root weight (450 mg) was recorded in plants raised from the seed treated with the bacterial isolateBDISOB01MymR, BDISOB222GaiR (440 mg) followed by the bacterial isolates BDISOB05MymP (413 mg), BDISOB04KhaP (403 mg). Whereas, the lowest (170 mg) was reorded in the plants raised from untreated seed followed by the plants sprayed with [Bactroban (inducer) + SICOGREEN® (nutrient and hormonal solution) + Hemoxy (Copper fungicide)] (220 mg), BDISOB54KhuR (213 mg). Other bacterial isolates were statistically similar (**Table 7**).
