Alterações morfológicas no sistema radicular do milho induzidas por fungos micorrízicos e fósforo

The objective of this research, carried out under greenhouse conditions was to evaluate the effect of mycorrhizal fungi (Glomus etunicatum and Glomus clarum) inoculation and P levels (0, 50, 100 e 200 mg/kg of soil) on maize (Zea mays L.) root system morphology, cultivar BR 201, and P plant concentration in two harvest period (18 and 104 days after sowing) in disinfested dystrophic Dark-Red Latosol. The experiment was carried out under greenhouse conditions at Embrapa-Centro Nacional de Pesquisa de Milho e Sorgo, in Sete Lagoas, Minas Gerais, Brazil. Inoculation with mycorrhizal fungi increased root dry weight, number of first and second order lateral roots and P concentration in the plant, but decreased root/shoot dry weight ratio and number of root hairs. These effects were affected by P concentration in the soil and by mycorrhizal fungi species. Root dry weight of inoculated plants showed significative (P£0.05) correlation to root colonization to seminal and adventitious roots. Number of first and second orders lateral roots also showed significative (P£0.05) correlation to root colonization. Glomus etunicatum was most efficient in all P levels, but high P levels reduced these effects for both fungi species due to reduction on mycorrhizal colonization.

• Publication year

  2002

• Venue

  Pesquisa Agropecuaria Brasileira

• Publication date

  2002-04-01

• Fields of study

  Agricultural and Food Sciences, Biology

• Identifiers
  DOI 10.1590/S0100-204X2002000400013
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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