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Acta Prataculturae Sinica ›› 2014, Vol. 23 ›› Issue (5): 241-248.DOI: 10.11686/cyxb20140528

• Orginal Article • Previous Articles     Next Articles

Assessment of rhizobacteria strains for Vicia sativa

MA Wen-bin,YAO Tuo,WANG Guo-ji,ZHANG Yu-xia,RONG Liang-yan   

  1. Pratacultural College, Gansu Agricultural University, Agronomy College, Gansu Agricultrual University, Lanzhou 730070, China
  • Received:2014-04-03 Online:2014-10-20 Published:2014-10-20

Abstract:

To investigate the effect of rhizobacteria inoculants on the growth of Vicia sativa, four rhizobacteria strains (J3-1, J1-15, Y16 and J3) were assessed for potentially useful characteristics with the potential to enhance the growth and yield of V. sativa; high nitrogenase activity, high phosphate solubilisation and ability to secrete 3-indoleacetic acid (IAA) into the rhizosphere. Strains J3-1, J1-15 and Y16 had the ability to solubilize phosphate and secrete IAA. J1-15, Y16, J3-1 had the strongest phosphate solubilizing capacity (548.9 mg/L), IAA secreting ability (17.8 μg/mL), and nitrogenase activity (366.51 C2H4 nmol/mL·h), respectively. Y16 increased the aboveground biomass and underground biomass of V. sativa by 104.5% and 254.1%, respectively, compared to the non-inoculated control. An inoculant mixture of all four strains increased the aboveground biomass and underground biomass of V. sativa by 76.1% and 192.3%, respectively, relative to the control. This resulted from an increase in plant height, root length, root surface area, root volume and root activity of 29.4%, 70.0%, 174.0%, 194.6% and 38.3%, respectively. The results suggest that inoculants including mixtures of rhizobacteria strains may have significant benefits for V. sativa cultivation.

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