Genotypic variability of maize for nitrogen accumulation and contribution of biological nitrogen fixation

Authors

  • Marcio Mattos de Mendonça Assessoria e Serviços a Projetos em Agricultura Alternativa
  • Segundo Sacramento Urquiaga Embrapa Agrobiologia
  • Veronica Massena Reis Embrapa Agrobiologia

DOI:

https://doi.org/10.1590/S1678-3921.pab2006.v41.7332

Keywords:

Azospirillum, Zea mays, diazotrophic bacteria, gemoplasm

Abstract

The aim of this work was to compare nine genotypes of maize inoculated with a mixture of diazotrophic bacteria, and to quantify the contribution of biological nitrogen fixation (BNF). In order to quantify the BNF, isotopic dilution technique was used, in a concrete tank loaded with Ultissol horizon B, labelled with 15N. Differences were observed between total dry matter, grain production and N accumulation but differences in the enrichment of 15N were not observed, showing that the productivity and N accumulation were a result of the phenotype variability in extract N from the soil.

Published

2006-11-01

How to Cite

de Mendonça, M. M., Urquiaga, S. S., & Reis, V. M. (2006). Genotypic variability of maize for nitrogen accumulation and contribution of biological nitrogen fixation. Pesquisa Agropecuaria Brasileira, 41(11), 1681–1685. https://doi.org/10.1590/S1678-3921.pab2006.v41.7332

Issue

Section

SCIENTIFIC NOTES