Avaliação de cultivares de soja quanto à tolerância ao estresse hídrico em substrato contendo polietileno glicol - DOI: 10.4025/actasciagron.v30i2.1731

Leandra Regina Texeira; Alessandro de Lucca e Braccini; Decio Sperandio; Carlos Alberto Scapim; Ivan Schuster; Joselaine Viganó

doi:10.4025/actasciagron.v30i2.1731

Evaluation of soybean cultivars regarding tolerance to water stress in substrat containing polyethylene glycol - DOI: 10.4025/actasciagron.v30i2.1731

Leandra Regina Texeira UEM
Alessandro de Lucca e Braccini UEM
Decio Sperandio UEM
Carlos Alberto Scapim UEM
Ivan Schuster Cooperativa Central de Pesquisa Agricola
Joselaine Viganó UEM

DOI: https://doi.org/10.4025/actasciagron.v30i2.1731

Keywords: Glycine max (L.) Merrill, seeds, osmotic potential, germination, water stress

Abstract

The objective of this work was to evaluate the tolerance of soybean genotypes to water stress in substract soaked with polyethylene glycol (PEG 6000). The study used seeds stored for one year in laboratory uncontrolled conditions, of the following cultivars: CD 201, CD 202, CD 204, CD 205, CD 206, CD 208, CD 215, CD 216, Embrapa 48, BRS 132, BRS 184 and BRS 212. The soybean seeds were evaluated through germination tests, seedling vigor classification tests, seedling length and dry biomass, under water stress conditions using two levels of osmotic potential (0.0 and -0.1 MPa). Cultivars were them grouped in different levels of drought tolerance, by the percentage reduction in the appraised characteristics {% Reduction = [1-(Germination or Vigor in PEG 6000 / Germination or Vigor in water)] x 100}, for the technique of grouping analysis, according to the nearest neighbor hierarchical method. The soybean genotypes presented differentiated behavior regarding drought tolerance. The Embrapa 48 cultivar presented the greatest tolerance to water stress. Comparing the results obtained by multivariate analysis and by the Scott-Knott grouping method, good concordance was observed between the two methods in the constitution of the groups. The method used and the statistical procedure adopted allowed to differentiate the soybean cultivars in a short period of time

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Author Biography

Leandra Regina Texeira, UEM

Bióloga, graduada pela Universidade Paranaense (2001). Especialista em Ciências Químicas Físicas e Biológicas pela Universidade Paranaense (2002). Especialista em Genética e suas Aplicações na Biotecnologia pela Universidade Paranaense (2003). Mestre em Genética e Melhoramento pela Universidade Estadual de Maringá (2005). Atualmente é doutoranda em Genética e Melhoramento pela Universidade Estadual de Maringá Currículo Lattes

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Published

2008-04-03

How to Cite

Texeira, L. R., Braccini, A. de L. e, Sperandio, D., Scapim, C. A., Schuster, I., & Viganó, J. (2008). Evaluation of soybean cultivars regarding tolerance to water stress in substrat containing polyethylene glycol - DOI: 10.4025/actasciagron.v30i2.1731. Acta Scientiarum. Agronomy, 30(2), 217-223. https://doi.org/10.4025/actasciagron.v30i2.1731

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Issue

Vol 30 No 2 (2008)

Section

Crop Production

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