Correlação entre diversidades genéticas em genótipos de milho, obtidas em diferentes combinações de ambientes

This study aimed to study the correlation between different environments of genetic diversity in corn genotypes in the city of Palmas, Tocantins, in late planting. The tests were divided into two planting dates (01.21.2014 and 02.19.2014). In each time the tests were performed under conditions of high nitrogen (N), mean N and low N in topdressing, yielding 6 environments. The experimental design used in each test was a randomized complete block design with three replications and 12 treatments (genotypes) of corn coming from the. Sixteen agronomic traits were used. Was conducted study of genetic diversity for each test, all tests together and combinations thereof. Significant effects were detected for the correlations in 30% of the pairs. In AMB 1, there was a positive and significant correlation for the great majority of combinations, which showed a possibility in reducing the number of experiments to study diversity. And the non-significance of the correlation between periods 1 (AMB 2) and season 2 (AMB 3), exemplifies the need to conduct trials at different times.