ABSTRACT
The aim was to evaluate the adaptability and stability of the genotypes by REML/BLUP method. The experiments were carried out in 20 environments in the years 2010, 2011, 2012 and 2014 in different carrot producing regions in Brazil. The experimental design was a randomized block design with three replications and plots of 1 m2. Four carrot populations in breeding phase were evaluated: CNPH-14, CNPH-15, CNPH-16 and CNPH-17, the open-pollinated cvs. BRS Planalto and Brasília and the hybrid Juliana. At 100 days after sowing we determined in each plot the root yield with commercial standard. We used the REML/BLUP methodology to estimate the adaptability and stability of genotypes. We observed that populations with better performance and adaptability and stability in the study sites were the populations CNPH-14 and CNPH-17. The cv. Juliana and the population CNPH-15 showed the worst results compared to the average of the environment, and Juliana had specific adaptation to São Gotardo, Minas Gerais State and Canoinhas, Santa Catarina State, Brazil. The populations CNPH-14 and CNPH-17 have broad adaptation which facilitates the recommendation as future cultivars.
Keywords:
daucus carota; genotype x environment interaction; commercial production.