Identification and in vitro Evaluation of Environmental Stress Resilient Plant Growth Promoting Rhizobacterial Consortia for Rice (Oryza sativa L.)

The present study screened bacteria isolated from rice rhizosphere for various beneficial traits related to three categories of plant growth promotion, abiotic stress tolerance, and compatibility with multiple agrichemicals identify a microbial consortium that performs better than individual isolates in improving under normal stressful environmental conditions. Among thirty-two screened, 29, 9, 20 were able solublilize insoluble minerals nutrients like phosphorous, potassium zinc respectively. About 31, 23, 17 found possess the IAA, ammonia, siderophore HCN production Abiotic salinity, drought high temperature tolerance displayed by 8, 2 10 respectively when examined their NaCl (4%, 6% 8%), PEG (64 g/l equivalent -0.73Mpa) at 45℃ temperature. Agrichemical tolerant identified screening fertilizers commonly used pesticides. Based on scores assigned during tests, 9 best isolates, each category, selected development consortia. Our aim this initial was consortia (C-1, 3) consisting compatible bacteria, evaluate effect seed germination seedling vitro C1 enhanced compared strains, C2 C3 highest vigour index I, II values 1616 ± 18 5.47 0.68 16S rRNA sequence analysis bacterial as Achromobacter sp, Stenotrophomonas sp Pseudomonas stutzeri. Therefore, has unique can be promotion while simultaneously demonstrating advantage over single isolate inoculants non stressed