Rhizobacteria acts as bioenhancer for growth of soybean ( Glycine max (L.) Merr.) under growth chamber condition

摘要

Inoculations of plant growth promoting rhizobacteria (PGPR) have been shown to produce beneficial effects through growth stimulation in legumes. An attempt has been made to use rhizobacteria in soybean. Two experiments were conducted to observe the effects of PGPR inoculation on root stimulation and colonization of soybean seedlings. The PGPR strains (UPMB10, UPMB11, UPMB12, UPMB13 and UPMB14) were evaluated for their N 2 fixing capacities in association with soybean roots by acetylene reduction assay (ARA) and IAA production. The results showed that roots of soybean inoculated with indigenous PGPRs isolates of UPMB10 and UPMB12 fixed N 2 and produced higher ARA and IAA values, consequently, improved the bioenhancing activity by increasing root growth, nodulation and nitrogen percentage.