Key locations for soybean genotype assessment in Central Brazil

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.

Bibliographic Details

Main Authors:	Pacheco,Roberto Miranda, Duarte,João Batista, Souza,Plínio Itamar Mello de, Silva,Sérgio Abud da, Nunes Junior,José
Format:	Digital revista
Language:	English
Published:	Embrapa Secretaria de Pesquisa e Desenvolvimento 2009
Online Access:	http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009000500007
Tags:	Add Tag No Tags, Be the first to tag this record!