<b>Response to the selection in the 11^th cycle of reciprocal recurrent selection among full-sib families of maize</b> - doi: 10.4025/actasciagron.v35i4.17489

• Main Authors: Ana Paula Cândido Gabriel Berilli, Messias Gonzaga Pereira, Roberto dos Santos Trindade, Fabiane Rabelo da Costa, Keila Silva da Cunha
• Format: Article
• Language: English
• Published: Eduem (Editora da Universidade Estadual de Maringá) 2013-05-01
• Series: Acta Scientiarum: Agronomy
• Subjects: genetic gains; selection index; interpopulation hybrids; longevity of recurrent selection
• Online Access: http://186.233.154.254/ojs/index.php/ActaSciAgron/article/view/17489
• ISSN: 1679-9275; 1807-8621

The continuous gains in cycles of recurrent selection have raised disagreement among researchers. Two hundred and forty-two full-sib families were obtained from CIMMYT and Piranão populations and evaluated in a simple lattice design in two environments to estimate the response to selection in the 11th cycle of the UENF reciprocal recurrent selection program. No genotype x environment interaction was observed for most of the traits evaluated, indicating that a single recurrent selection program can be conducted for both sites. The population studied exhibited wide genotypic variability and heritability estimates ranged from 33 to 73%, indicating prospects of selection gain for the following cycles. The predicted genetic gain in yield was 12.90%. It is possible to conclude that the populations studied may be promising for the achievement of new selection cycles, which provides a continuous concentration of favorable alleles and the production of hybrids for the North and Northwest regions of the state of Rio de Janeiro.