PARAMETERS ESTIMATES OF HETEROSIS IN HYBRID MAIZE F2 POPULATIONS

Authors

  • Cristiani Santos Bernini Instituto Agronômico
  • Maria Elisa Ayres Guidetti Zagatto Paterniani Instituto Agronômico de Campinas

Keywords:

Zea mays L., intervarietal hybrid, complete diallel.

Abstract

Hybrids developed with the efficient use of heterosis contribute significantly for increasing maize yield. This study aimed to evaluate F2 hybrid populations, concernings agronomic traits, and estimate genetic parameters of F2 populations, as well as heterosis, by using the Gardner & Eberhart method. Higher estimates of F2 populations effect, for grain mass, were noticed in the Pop.9, Pop.11, Pop.14, and Pop.15, being considered suitable for intrapopulational recurrent selection programs and for obtaining superior lines. The Pop.10 and Pop.16 distinguished themselves by presenting the higher effects of parental heterosis, for grain mass. The Pop.12 x Pop.10 and Pop.13 x Pop.10 hybrids showed high yield and specific heterosis effects, revealing the existence of dominant locus in the genetic control of grain mass.

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Author Biographies

Cristiani Santos Bernini, Instituto Agronômico

Formada em engenharia agronômica pela Fundação de Ensino Superior de Passos/ Universidade do Estado de Minas Gerais (2009), mestre em Genética, Melhoramento Vegetal e Biotecnologia (2011) pelo Instituto Agronômico de Campinas e atualmente cursando o doutorado no Instituto Agronômico.

Maria Elisa Ayres Guidetti Zagatto Paterniani, Instituto Agronômico de Campinas

Pesquisadora Científica do Instituto Agronômico de Campinas, Centro de Grãos e Fibras

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Published

2012-03-09

How to Cite

BERNINI, C. S.; PATERNIANI, M. E. A. G. Z. PARAMETERS ESTIMATES OF HETEROSIS IN HYBRID MAIZE F2 POPULATIONS. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], Goiânia, v. 42, n. 1, p. 56–62, 2012. Disponível em: https://revistas.ufg.br/pat/article/view/14577. Acesso em: 21 may. 2024.

Issue

v. 42, n. 1, Jan./Mar. 2012

Section

Genetics and Plant Breeding

License

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