Key locations for soybean genotype assessment in central Brazil
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Data
2009-05
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Resumo
The objective of this work was to identify key locations for the establishment of soybean
(Glycine max) genetic breeding programs, in the Central Region of Brazil. Grain yield data of three maturity
groups of soybean genotypes, from regional trials conducted over three years, at 18 locations in Brazilian
Cerrado were used. A key location for the early phases of the breeding program was defined as the site that
best classifies the winning genotypes in the region. Key locations for the final phases were defined as those
sites that best represent each environmental stratum, in relation to the adaptability of the respective winning
genotype. This adaptability was estimated by additive main effects and multiplicative interaction (AMMI)
model analysis, using the distance between the score of each location in a stratum and the score of the winning
genotype, which characterizes such stratum in an AMMI biplot. The locations that best classified the winning
genotypes over space and time were Mineiros, Placas and Rio Verde. For the final phases of genotype selection,
with data from the three maturity group, the recommended locations were: Buritis, Chapadão do Céu, Iraí,
Pamplona, Placas, Planaltina, Rio Verde, Sacramento, Senador Canedo, Uberaba, and Uberlândia.
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Glycine max, Glycine max, Adaptability, AMMI analysis, Adaptabilidade, Análise AMMI, Environmental stratification, G×E interaction, Estratificação ambiental, Interação G×E
Citação
PACHECO, Roberto Miranda et. al. Key locations for soybean genotype assessment in Central Brazil. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 44, n. 5, p. 478-486, May 2009.