Azospirillum brasilense FAVORS MORPHOPHYSIOLOGICAL CHARACTERISTICS AND NUTRIENT ACCUMULATION IN MAIZE CULTIVATED UNDER TWO WATER REGIMES

Authors

  • DANIELE MARIA MARQUES Universidade Federal de Lavras - UFLA-MG/Departamento de Biologia
  • PAULO CÉSAR MAGALHÃES Embrapa Milho e Sorgo - Sete Lagoas - MG
  • IVANILDO EVÓDIO MARRIEL Embrapa Milho e Sorgo
  • CARLOS CÉSAR GOMES JUNIOR Universidade Federal de Alfenas - UNIFAL-MG
  • ADRIANO BORTOLOTTI DA SILVA Universidade José do Rosário Vellano - Alfenas-MG
  • IZABELLE GONÇALVES MELO Universidade Federal de São João del Rei - UFSJ-MG
  • THIAGO CORREA DE SOUZA Universidade Federal de Alfenas - UNIFAL-MG/Instituto de Ciências da Natureza

Keywords:

Zea mays L., Water deficit, WinRhizo, Leaf area, Rhizobacteria

Abstract

The use of plant growth-promoting rhizobacteria (PGPR) is an important and promising tool for sustainable agriculture. The objective of this study was to evaluate the morphophysiological responses and nutrient uptake of maize plants inoculated with A. brasilense under two water conditions. The experiment was carried out in a greenhouse with ten treatments: five A. brasilense inoculants (Control, Az1, Az2, Az3 and Az4) inoculated in the seed and two water conditions - irrigated and water deficit. Treatments with water deficit were imposed at the V6 stage for a period of 15 days. The phytotechnical characteristics, gas exchange, root morphology, shoot, root and total dry matter, as well as nutrient analysis, were evaluated after water deficit. Azospirillum brasilense (Az1, Az2, Az3 and Az4) yielded higher growth, increased gas exchange and nutrient uptake under irrigation conditions. Inoculation by Az1 and Az3 benefited the root architecture of maize plants, with a greater exploitation of the soil profile by these roots. Water deficit caused a reduction in the development of maize plants. Inoculation by Az1, Az2 and Az3 can improve plant growth, nutrient uptake and mitigate the effects of water deficit in the development of maize plants.

Author Biographies

PAULO CÉSAR MAGALHÃES, Embrapa Milho e Sorgo - Sete Lagoas - MG

Fisiologia Vegetal

THIAGO CORREA DE SOUZA, Universidade Federal de Alfenas - UNIFAL-MG/Instituto de Ciências da Natureza

Ecofisiologia Vegetal; Morfofisiologia Vegetal; Fisiologia da Produção; Anatomia Vegetal; Bioquímica de Plantas

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Published

2020-06-23

How to Cite

MARQUES, D. M., MAGALHÃES, P. C., MARRIEL, I. E., GOMES JUNIOR, C. C., DA SILVA, A. B., MELO, I. G., & DE SOUZA, T. C. (2020). Azospirillum brasilense FAVORS MORPHOPHYSIOLOGICAL CHARACTERISTICS AND NUTRIENT ACCUMULATION IN MAIZE CULTIVATED UNDER TWO WATER REGIMES. REVISTA BRASILEIRA DE MILHO E SORGO, 19, 17. Retrieved from https://rbms.abms.org.br/index.php/ojs/article/view/1152

Issue

Vol. 19 (2020)

Section

Scientific Paper

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