The study of plant growth promoting rhizobacteria (PGPR) from several Poaceous species in the East Chi-lien Mountains of China

doi:10.11686/cyxb2016090

Abstract

Abstract: This research studied the quantity and distribution of bacteria in the rhizosphere of seven Poaceous species from the east Chi-lien Mountains. The research employed a cultivation method, and mainly studied nitrogen fixing bacteria. It was found that there were large numbers of bacteria in rhizospheres of all 7 plant species studied. The total number of rhizosphere bacteria counted ranged from 2.5×10⁶ cfu/g to 17.07×10⁶ cfu/g, with Agropyron cristatum and Leymus secalinus having the lowest rhizosphere nitrogen-fixing bacterial populations and Poa alpigena having the highest, with the other 4 species intermediate. A total of 201 nitrogen-fixing strains were isolated from the 7 grass species studied. The quantity of bacteria and PGPR present a distribution trend: “root system surface (RP)>root surface soil (RS)>histoplan or interior of roots (HP)”.

LI Jian-Hong, LI Xue-Ping, MA Wen-Wen, YAO Tuo, SUN Jian-Jun, JIANG Yong-Mei, ZHANG Jian-Gui, SHI Shang-Li. The study of plant growth promoting rhizobacteria (PGPR) from several Poaceous species in the East Chi-lien Mountains of China[J]. Acta Prataculturae Sinica, 2016, 25(11): 173-177.

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