Genotypic, phenothypic and environmental correlations in progenies of corn

Authors

  • Margarida Agostinho Lemos
  • Elto Eugenio Gomes e Gama "Empresa Brasileira de Pesquisa Agropecuária, Centro Nacional de Pesquisa de Milho e Sorgo, Cnpms.
  • Antônio Carlos de Oliveira
  • Marcelo Renato Alves de Araújo

DOI:

https://doi.org/10.1590/S1678-3921.pab1992.v27.3805

Keywords:

<i>Zea mays</i>, genetic parameters, plant traits, ear traits

Abstract

This paper presents estimates for genotypic, phenotypic and environmental correlation coefficients in the second cycle of selection for maize "Dentado composto" population, which envolved the following traits: plant height (PH), ear height (EH), ear number per plant (EN), ear number with husk problems (ENHP), Spodoptera frugiperda (SF), Heliothis zea (HZ) and grain yield (GY). Data came from experimental trials carried out at Empresa Pernambucana de Pesquisa Agropecuária (IPA) fields, in 1956. The genotypic correlations were greater than the phenotypic ones in all cases except for ENHP x HL The genotypic correlations were positive between GY and the PH and EN traits; between EH x HZ and between HZ x ENHP; negative between PH x SR, SF x HZ as well as between GY x SF and GY x HZ, indicating the importante of selection for resistance lo S. frugiperda and H. zea.

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Published

1992-12-01

How to Cite

Lemos, M. A., e Gama, E. E. G., de Oliveira, A. C., & de Araújo, M. R. A. (1992). Genotypic, phenothypic and environmental correlations in progenies of corn. Pesquisa Agropecuaria Brasileira, 27(12), 1563–1569. https://doi.org/10.1590/S1678-3921.pab1992.v27.3805

Issue

v.27, n.12, dez. 1992

Section

GENETICS