Journal of Agronomy1812-53791812-5417Asian Network for Scientific Information10.3923/ja.2012.43.52Rosa LopesValeria C. Bespalhok-FilhoJoao Maria de AraujoLuiza Vieira RodriguesFabio DarosEdelclaiton Augusto OliveiraRicardo 22012112The capacity of the sugarcane plant to respond to Plant Growth
Promoting Rhizobacteria (PGPR) is associated with both the efficiency of the
bacterial strain and the capacity of the plant to respond to inoculation. For
this reason, the appropriate selection of both the bacterial strain and the
sugarcane genotype is required for generating optimal results from PGPR inoculations.
To address this issue, this study sought to evaluate the response of 54 sugarcane
families to inoculation with Azospirillum brasilense strains. In particular,
four months after germination, 54 families from crosses between clones of sugarcane
were treated either with an inoculant named Triazo, which was composed of a
mixture of the Abv5, Abv6 and Abv7 strains of A. brasilense, or with
the IC26 strain of A. brasilense. The treated plants were then planted
in fields. These plants were assessed 14 months after they had been planted
on the basis of various productivity parameters. Significant differences among
the inoculants were observed for stalk length, stalk diameter and Brix. Significant
interactions between the families and bacteria occurred with respect to stalk
diameter and Brix; the interaction coefficients could have either positive (0.7272
for Brix and 0.4061 for stalk diameter) or negative (-0.5514 for Brix and -0.1858
for stalk diameter) values, depending on the family and the inoculant that were
considered. Therefore, the inoculation of the seedling in the first phase of
selection is recommended for a sugarcane breeding program that seeks to select
genotypes with better responses to PGPR inoculation.]]>Arzanesh, M.H., H.A. Alikhani, K. Khavazi, H.A. Rahimian and M. Miransari,2009In vitro growth of wheat (Triticum aestivum L.) seedlings, inoculated with Azospirillum sp. snder drought stress.]]>5244249Assmus, B., P. Hutzler, G. Kirchhof, R. Amann, J.R. Lawerence and A. Hartmann,1995In situ localization of Azospirillum brasilense in the rhizosphere of wheat with fluorescently labeled, rRNA-targeted oligonucleotide probes and scanning confocal laser microscopy.]]>6110131019Baldani, I.J. and L.V. Baldani,200577549579Bashan, Y. and L.E. Bashan,2011Azospirillum promotes plant growth: A critical assessment.]]>10877136Bashan, Y., J.J. Bustillos, L.A. Leyva, J.P. Hernandez and M. Bacilio,2006Azospirillum brasilense.]]>42279285Bashan, Y., G. Holguin and L.E. de-Bashan,2004Azospirillum-plant relationship: Physiological, molecular, agricultural and environmental advances (1997-2003).]]>50521577Bashan, Y. and G. 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