| dc.description.abstract | Abstract :
Plant associated bacteria are promising alternatives to chemical fertilizers for plant growth and yield improvement in an eco-ffiendly manner. Phosphorus fixation limits availability of P to plants in tropical soil, which is a major problem for crop production.
In this study, seeds of two traditional rice cultivars (Lalzira and Darshail) were collected from a Non-Government Organization “Unnoyundhara Bangladesh”. A total 6 bacteria were tested for phosphate solubilizing activity. Upon screening, three isolates viz.,
BTS-8, BTS-9, and BTS-10(B3) showing varying levels of phosphate solubilizing activity in agar plate assay. The pH of the culture media was decreased with increased bacterial growth suggesting that these might secret organic acids to solubilize insoluble phosphorus. In vitro rice seedling bioassay with three phosphate solubilizing bacterial (PSB) isolates significantly enhanced seedling growth (shoot and root length, shoot, and root biomass) compared to untreated control. The performance of BTS-10(B3) was superior in respect of all the parameters studied in pot experiment, like shoot biomass (13.23g), root biomass (7.25g), SPAD value (33.15), effective tiller (6.33), 100- grain weight (3.14g), and grain yield per pot (7.82g/pot). The BTS-10(B3) was identified as Bacillus cereus by 16S rRNA gene sequencing and might be useful for improving P nutrition in rice soils with low nutrient condition. | en_US |
