Electrical conductivity of the seed soaking solution and soybean seedling emergence

Authors

  • Roberval Daiton Vieira UNESP/FCAV; Depto. de Produção Vegetal
  • Angelo Scappa Neto Monsanto do Brasil Ltda.
  • Sonia Regina Mudrovitsch de Bittencourt Ministério da Ciência e Tecnologia; CTNBio
  • Maristela Panobianco UNESP/FCAV; Depto. de Produção Vegetal

DOI:

https://doi.org/10.1590/S0103-90162004000200007

Keywords:

Glycine max, vigor, physiological quality, water stress

Abstract

Vigor of soybean [Glycine max (L.) Merrill] seeds can be evaluated by measuring the electrical conductivity (EC) of the seed soaking solution, which has shown a satisfactory relationship with field seedling emergence, but has not had aproper definition of range yet. This work studies the relationship between EC and soybean seedling emergence both in the field and laboratory conditions, using twenty two seed lots. Seed water content, standard germination and vigor (EC, accelerated aging and cold tests) were evaluated under laboratory conditions using -0.03; -0.20; -0.40 and -0.60 MPa matric potentials, and field seedling emergence was also observed. There was direct relationship between EC and field seedling emergence (FE). Under laboratory conditions, a decreasing relationship was found between EC and FE as water content in the substrate decreased. Relationships between these two parameters were also found when -0.03; -0.20 and -0.40 MPa matric potentials were used. EC tests can be used successfully to evaluate soybean seed vigor and identify lots with higher or lower field emergence potential.

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Published

2004-04-01

Issue

Section

Crop Science

How to Cite

Electrical conductivity of the seed soaking solution and soybean seedling emergence . (2004). Scientia Agricola, 61(2), 164-168. https://doi.org/10.1590/S0103-90162004000200007