GENETIC PROGRESS IN 20 YEARS OF RECIPROCAL RECURRENT SELECTION IN MAIZE
Palavras-chave:
Zea mays, plant breeding, heterosis, genetic gain, alpha-latticeResumo
Maize, a grain distinguished globally for its economic relevance, has experienced a large increase in yield in the past decades. Breeding programs, which are largely responsible for crop development, aim at using techniques that maximize profits and are in accordance with local demand. The full-sib reciprocal recurrent selection (RRS) has a long-term focus on producing better performing hybrids. On this basis, this study intended to evaluate the development of reciprocal populations (Piranão and CIMMYT) throughout ten RRS cycles, in terms of genetic progress, and to verify the occurrence of heterosis and its magnitude. To this end, each of the ten selection cycles, represented by three genotypes (Piranão genotypes, CIMMYT genotypes, and interpopulation hybrids) were tested in four trials, in two locations, and in two years, in a 14x20 alpha-lattice with four replicates. The traits evaluated were grain yield, ear weight, and prolificacy. There was a major increase for all traits in interpopulation hybrids, even though the CIMMYT parent had not shown a significant increase, suggesting that even though one of the populations stagnates after 10 cycles, RRS is efficient in obtaining superior hybrids. There was an average increase of 171 kg.ha-1.cycle-1 throughout the ten cycles. Heterosis and heterobeltiosis oscillated between cycles, with higher mean for heterosis, suggesting discrepancy between the parents and superiority of the Piranão population (possibility to indicate the increase in yield per cycle or per year).
Downloads
Referências
ARIAS, C.A.A.; SOUZA JÚNIOR, C.L. 1998. Variância genética e componentes de covariância relacionados à seleção recorrente intra e interpopulacional em milho (Zea mays L.). Genetics and Molecular Research, 21(4):1-8.
BARETTA, D.; NARDINO, M.; CARVALHO, I.R.; OLIVEIRA, A.C.; SOUZA, V.Q.; MAIA, L.C. 2016. Desempenho de genótipos de milho do Rio Grande do Sul utilizando modelos mistos. Científica, 44(3):403-411.
BERILLI, A.P.C.G.; PEREIRA, M.G.; TRINDADE, R.S.; COSTA, F.R. 2013. Response to the selection in the 11th cycle of reciprocal recurrent selection among full-sib families of maize. Acta Scientiarum, 35:435-441. BERNINI, C.S. 2011. Avaliação agronômica e heterose de híbridos de populações F2 de milho, visando nova alternativa para o estado de São Paulo. Thesis (PhD in Agricultura Tropical e Subtropical). Instituto Agronômico, Campinas, 74p.
CÂMARA, T.M.M.; BENTO, D.A.V.; ALVES, G.F.; SANTOS, M.F.; MOREIRA, J.U.V. 2007. Parâmetros genéticos de caracteres relacionados à tolerância à deficiência hídrica em milho tropical. Bragantia, 66(4):595-603.
CANDIDO, L.S.; ANDRADE, J.A.C.; GARCIA, Q.F.; GONÇALVES, L.S.A.; AMARAL JÚNIOR, A.T. 2011. Seleção de progênies de meios-irmãos do composto Isanão VF-1 de milho na safra e safrinha. Ciência Rural, 41(6):947-953. CONAB - Companhia Nacional de Abastecimento. 2019. Séries históricas. Available in: http://www.conab.gov.br/conteudos.php?a=1252&t=2&Pagina_objcmscontedos=3#A_objcmsconteudos.
COMSTOCK, R.E., ROBINSON H.F., HARVEY, P.H.A. 1949. Breeding procedure designed to make maximum use of both general and specific combining ability. Agronomy Journal, 41:360-367.
CUNHA, K.S.; PEREIRA, M.G.; GONÇALVES, L.S.A.; BERILLI, A.P.C.G. 2012. Full-sib reciprocal recurrent selection in the maize populations Cimmyt and Piranão. Genetics and Molecular Research, 11(3):3398-3408.
DONÁ, A.A.; MIRANDA, G.V.; LIMA, R.O.; CHAVES, L.G.; GAMA, E.E.G. 2012. Genetic Parameters and Predictive Genetic Gain in Maize with Modified Recurrent Selection Method. Chilean Journal of Agricultural, 72(1):33-39.
DUARTE, A.P.; KAPPES, C. 2015. Evolução dos sistemas de cultivo de milho no Brasil. Informações Agronômicas, 152:15-18.
DUVICK, D.N. 2005. The contribution of breeding to yield advances in maize (Zea mays L.). Advances in Agronomy, 86:83-145.
FALCONER, D.S.; MACKAY, T.F.C. 1996. Introduction to quantitative genetics. 4.ed. Edinburgh: Longman Group Limited, 464p.
FARIA, V.R.; VIANA, J.M.S.; SOBREIRA, F.M.; SILVA, A.C. 2008. Seleção recorrente recíproca na obtenção de híbridos interpopulacionais de milho-pipoca. Pesquisa Agropecuária Brasileira, 43(12):1749-1755.
FERREIRA, E.A.; PATERNIANI, M.E.A.G.Z.; DUARTE, A.P.; GALLO, P.B.; SAWAZAKI, E.; AZEVEDO FILHO, J.A.; GUIMARÃES, P.S. 2009. Desempenho de híbridos top crosses de linhagens S3 de milho em três locais do Estado de São Paulo. Bragantia, 68(2):319-327.
GALVÃO, K.S.C.; RAMOS, H.C.C.; SANTOS, P.H.A.D.; ENTRINGER, G.C.; VETTORAZZI, J.C.F.; PEREIRA, M.G. 2015. Functional molecular markers (EST-SSR) in the full-sib reciprocal recurrent selection program of maize (Zea mays L.). Genetics and Molecular Research, 14:7344-7355. GARCIA, F.Q. 2009. Potencial das populações Isanão-VF1 e Isanão-VD1 para seleção recorrente recíproca. Thesis (PhD inAgronomy) Universidade Estadual Paulista, Ilha Solteira, 89p.
HALLAUER, A.R. 1977. Four cycles of reciprocal full-sib selection. Ames: Iowa State Univ., p.11-13.
HALLAUER, A.R.; CARENA, M.J. 2009. Maize breeding. In: ‘Handbook of plant breeding: cereals’. (Ed. MJ Carena). pp. 3-98. Springer, New York.
HALLAUER, A.R.; CARENA, M.J.; MIRANDA FILHO, J.B. 2010. Quantitative Genetics in Maize Breeding. Springer, New York. 663p.
HALLAUER, A.R.; EBERHART, S.A. 1970. Reciprocal full-sib selection. Crop Science, 10(3):315-316.
HALLAUER, A.R.; MIRANDA FILHO, J.B. 1981. Quantitative genetics in maize breeding. Press, Iowa State Univ. 168p.
KEERATINIJAKAL, V.; LAMKEY, K.R. 1993. Responses to reciprocal recurrent selection in BSS and BCSB1 maize populations. Crop Science, 33(1):73-73.
LIMA NETO, F.P.; SOUZA JÚNIOR, C.L. 2009. Number of recombinations and genetic properties of a maize population undergoing recurrent selection. Scientia Agrícola, 66(1):52-58.
Downloads
Publicado
Edição
Seção
Licença
Este trabalho está licenciado sob uma licença Creative Commons Attribution 4.0 International License.
