Environmental stratification in Carioca common bean genotype evaluation in Goiás and Distrito Federal, Brazil

Authors

  • Helton Santos Pereira Embrapa Arroz e Feijão
  • Leonardo Cunha Melo Embrapa Arroz e Feijão
  • Luís Cláudio de Faria Embrapa Arroz e Feijão
  • Maria José Del Peloso Embrapa arroz e Feijão
  • Adriane Wendland Embrapa Arroz e Feijão

DOI:

https://doi.org/10.1590/S1678-3921.pab2010.v45.8053

Keywords:

Phaseolus vulgaris, ecovalence, genotype by environment interaction, test location

Abstract

The objective of this study was to perform the environmental stratification in the states of Goiás and Distrito Federal for grain yield evaluation of Carioca common bean genotypes, and to compare the efficiency of different methods of environmental stratification. Twenty-five trials were carried out in a randomized block design with three replications, both in the rainy and in the winter sowing seasons, in 2003 and 2004. The trials were composed of 16 genotypes with Carioca grain type. The environmental stratification was performed through four methodologies: traditional Lin; Cruz & Castoldi´s estimate of the simple percentage of the genotypes by location interactions; estimate of Pearson´s correlation for pairs of locals; and the Wricke's ecovalence method. Locations identified as similar by at least three of the methodologies were considered poor-informative, and they were the following Goiás state municipalities: Anápolis, Santo Antônio de Goiás, Goiatuba and Urutaí, in the rainy/2003, rainy/2004, winter/2003 and winter/2004 growing seasons, respectively. None of the locations was identified as poor-informative in at least two seasons and, therefore, none of them was eliminated from the evaluation network of Carioca common bean genotypes. The locations used in all growing seasons (Rio Verde, GO, and Planaltina, DF) were not identified as poor-informative in none of them and, therefore, they were indicated for evaluation of Carioca common bean genotypes. The methods of Lin and Wricke were the most indicated to identify poor-informative locations.

Published

2011-01-25

How to Cite

Pereira, H. S., Melo, L. C., de Faria, L. C., Del Peloso, M. J., & Wendland, A. (2011). Environmental stratification in Carioca common bean genotype evaluation in Goiás and Distrito Federal, Brazil. Pesquisa Agropecuaria Brasileira, 45(6), 554–562. https://doi.org/10.1590/S1678-3921.pab2010.v45.8053

Issue

Section

GENETICS