Common bean elite lines cultivated under nitrogen fertilization and inoculation with Rhizobium tropici
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Data
2015-12
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Resumo
More efficient strains of Rhizobium have been
selected for use in common bean. However, little effort was made
with lines selection. The main goals of this research were to verify
the presence of interaction involving common bean elite lines
utilizing Nitrogen fertilization and Rhizobium inoculation for grain
yield and to identify lines with superior yields utilizing biological
nitrogen fixation. Eight field trials were conducted at four location-
years in Brazilian savanna, using randomized complete blocks
design with three replications. Each trial was composed of 17
“carioca” elite lines. Every two tests in each location were planted
side by side, one with mineral nitrogen fertilization (90kg) and the
other one with inoculation with Rhizobium tropici SEMIA 4080
strain. Elite lines interaction with nitrogen fertilization/inoculation
was not important, so, it is possible to select lines for utilization
in both growing systems. In some locations-years, interaction
between lines and Rhizobium inoculation was most affected by
environment conditions, causing modification in lines classification
according to the type of nitrogen supplying used. In general, the
lines presented higher yields when fertilized with mineral nitrogen
as compared with inoculation. The cultivar ‘BRS Pontal’ presented
high and similar yields under both systems of nitrogen supply.
Descrição
Palavras-chave
Phaseolus vulgaris, Biological nitrogen fixation, Grain yield, Genotype by environment interaction, Phaseolus vulgaris, Interação genótipos x ambientes, Fixação biológica de nitrogênio, Produtividade de grãos
Citação
PEREIRA, Helton Santos; MELO, Leonardo Cunha; FARIA, Luís Cláudio de; FERREIRA, Enderson Petrônio de Brito; MERCANTE, Fábio Martins; WENDLAND, Adriane; SOUZA, Thiago Lívio Pessoa Oliveira de. Common bean elite lines cultivated under nitrogen fertilization and inoculation with Rhizobium tropici. Ciência Rural, Santa Maria, v. 45, n. 12, p. 2168-2173, Dec. 2015.