4.0 Article

Multiple Centroid Methodology to analyze genotype adaptability

Journal

CROP BREEDING AND APPLIED BIOTECHNOLOGY
Volume 9, Issue 1, Pages 8-16

Publisher

BRAZILIAN SOC PLANT BREEDING
DOI: 10.12702/1984-7033.v09n01a02

Keywords

Principal components; genotype-environment interaction; statistical analysis

Funding

  1. CNPq

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This study was carried out to propose a modification of the centroid method. The method is modified in the choice of the ideotype. to be defined according to the researchers interest, using the bi-segmented regression model. rather than based on experimental data, which limit the comparison of genotypes. To illustrate the method. one trait was simulated in 25 genotypes in 8 environments. For the simulations and statistical analyses the software package GENES was used. The multiple centroid is more flexible than the original centroid method. since it can be used according to the researcher's objective and the desired recommendation strategy. It is also readily interpretable for recommendation and unambiguous. Besides. the number of genotypes of interest can be compared, making a detailed study possible. by separating the genotypes into recommendation classes.

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