Genetic gains

Genetic progress in the UNB-2U population of popcorn under recurrent selection in Rio de Janeiro, Brazil

R. M. Ribeiro, Júnior, A. Tdo Amaral, Gonçalves, L. S. A., Candido, L. S., Silva, T. R. C., and Pena, G. F., Genetic progress in the UNB-2U population of popcorn under recurrent selection in Rio de Janeiro, Brazil, vol. 11, pp. 1417-1423, 2012.

As part of the Universidade Estadual do Norte Fluminense recurrent selection program of popcorn, we evaluated full-sib families of the sixth cycle of recurrent selection and estimated genetic progress for grain yield and expansion capacity. We assessed 200 full-sib families for 10 agronomic traits, in a randomized block design, with two replications within sets in two environments: Campos dos Goytacazes and Itaocara, in the State of Rio de Janeiro, Brazil.

Full-sib reciprocal recurrent selection in the maize populations Cimmyt and Piranão

K. S. da Cunha, Pereira, M. G., Gonçalves, L. S. A., Berilli, A. P. C. G., de Oliveira, E. C., Ramos, H. C. C., and Júnior, A. Tdo Amaral, Full-sib reciprocal recurrent selection in the maize populations Cimmyt and Piranão, vol. 11, pp. 3398-3408, 2012.

We estimated the genetic gains of the 12th cycle of reciprocal recurrent selection for maize traits of agronomic interest. We used 23 ISSR molecular markers in an attempt to maximize genetic variability among and within populations based on selection of S1 progenies. To this end, 138 full-sib families were evaluated in a randomized block design in two environments (the municipalities of Campos dos Goytacazes and Itaocara, in the State of Rio de Janeiro, Brazil), with replications within sets. Direct selection for grain yield was used for the selection of the families.

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