Integrated method for adaptability and phenotypic stability analysis

• Published in: Acta scientiarum. Agronomy 2011-04, Vol.33 (2), p.251-257
• Main Authors: de Vasconcelos, Edmar Soares, Reis, Mucio Silva, Cruz, Cosme Damiao, Sediyama, Tuneo, Scapim, Carlos Alberto
• Format: Article
• Language: eng ; spa
• Subjects: AGRONOMY
• ISSN: 1679-9275; 1807-8621; 1807-8621
• DOI: 10.4025/actasciagron.v33i2.8272

The objectives of this study were a description of the Centroid Method, which is used to investigate the phenotypic adaptability of genotypes and the inclusion of new ideotypes therein, creating the Integrated Method for adaptability and phenotypic stability analysis, as well as a comparison of the two methods in a study example. As an applied example of the new proposal, grain yield data of 14 soybean genotypes from experiments at four locations in the state of Minas Gerais were used. In a comparison, the qualitative and quantitative gains of the Centroid Method with seven ideotypes were higher than of the Centroid Method with only four ideotypes for adaptability analysis. With the incorporation of the new ideotypes into the Centroid Method other concepts for the adaptability and phenotypic stability analysis are represented and the modified method was designated "Integrated Method of Adaptability and Stability Analysis". CS 801 genotype was classified as the genotype with best adaptability to the environments Vicosa, Florestal, Sao Gotardo and Rio Paranaiba. The stability of the genotypes CAC 1, CS 741, Splendor, UFV 16, UFV 19, UFVP IV-6, UFVP IV-8, UFVP V-15, UFVP V-7, and UFV98700739 was classified as general. Keywords: centroid, genotype-environment interaction, ideotypes. Metodo integrado para analise de adaptabilidade e estabilidade fenotipica. Os objetivos deste trabalho foram apresentar uma modificacao ao metodo original do Centroide inserindo novos ideotipos, gerando uma proposta denominada Metodo Integrado para analise adaptabilidade e estabilidade fenotipica e comparar as duas metodologias. Como exemplo de aplicacao da nova proposta foi utilizado dados de produtividade de graos de quatorze genotipos de soja obtidos em experimentos conduzidos em quatro locais, no Estado de Minas Gerais. O novo metodo do Centroide com sete ideotipos propiciou ganhos qualitativos e quantitativos perante o metodo original do Centroide que possuia apenas quatro ideotipos para analise de adaptabilidade. Os novos ideotipos inseridos ao metodo do Centroide original permitem que esse represente outros conceitos para a analise da adaptabilidade e estabilidade fenotipica, sendo designado por Metodo Integrado de analise de adaptabilidade e estabilidade. CS 801 foi classificado como o genotipo de melhor adaptabilidade aos ambientes Vicosa, Florestal, Sao Gotardo e Rio Paranaiba. Os genotipos CAC 1, CS 741, Splendor, UFV 16, UFV 19, UFVP IV 6, UFVP IV-8, UFVP V-15, UFVP V-7