Euphytica

, Volume 163, Issue 3, pp 481–499 | Cite as

Comparison of selection methods on ‘Pigarro’, a Portuguese improved maize population with fasciation expression

  • Pedro M. R. Mendes Moreira
  • Silas E. Pêgo
  • Carlota Vaz Patto
  • Arnel R. Hallauer
Article
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Abstract

In 1984, Pêgo started, with the CIMMYT support, an on-farm participatory maize breeding (PMB) project at the Portuguese Sousa Valley region (VASO). VASO was intended to answer the needs of small farmers (e.g., yield, bread making quality, ability for polycropping systems). During 20 years of PMB at VASO, mass (MS) and S2 recurrent selection (S2RS) were applied on the maize landrace ‘Pigarro’. Morphological (e.g., ear length and fasciation level) and yield evaluations were conducted in Portugal (2–3 locations in 2 years) and in USA (4 locations in one year) using samples from original population, six MS cycles and three S2RS cycles. North American Populations (BS21, BS22, TEPR-EC6) were also included as checks. ANOVA comparisons and regression analyses on the rate of direct response to selection were performed. Response to MS for Iowa showed significant decrease in stalk lodging, while in Portugal ear length significantly decreased, whereas ear diameter, kernel-row number, and fasciation level significantly increased. Selection also significantly increased days-to-silk and anthesis in Portugal. Response to S2RS in Portugal significantly increased days-to-silk, uniformity, and cob/ear weight ratio. These results showed that the methods used by farmer and breeder were not effective for significant yield increase, but the ear size increased significantly for MS and showed a positive tendency for S2RS. Adaptation to farmer needs was maintained for the last cycles of selection.

Keywords

Fasciation Mass and recurrent selection ‘Pigarro’ Participatory maize breeding Open pollinated variety 

Abbreviations

NUMI

Maize Breeding Station (Núcleo de Melhoramento de Milho)

OPV

Open-pollinated variety

PMB

Participatory maize breeding

VASO

Sousa Valley, Portugal

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Notes

Acknowledgements

Particular acknowledgement to my students João Santos, J.P. Santos, Marisa Antunes, Liliana Morgado, Ralf Moura. To the farmer Mr Meireles, Eng Vaz Patto from ESAC, Eng Francisco Dias and Eng Mário Pardal from Escola Profissional Agrícola Afonso Duarte and Prof. Kendall Lamkey and team from Iowa University, for his kind support with trials and data collection in Iowa and to Mary Lents. To Daniela and Lucas. This research was supported by the following projects of Fundação para a Ciência e a Tecnologia, Portugal: POCI/AGR/57994/2004, PTDC/AGR-AAM/70845/2006; P. Mendes Moreira was supported by SFRH/BD/22188/2005 and M.C. Vaz Patto was supported by SFRH/BPD/34551/2007. The presentation of this work was sponsored by COST860.

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Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  • Pedro M. R. Mendes Moreira
    • 1
  • Silas E. Pêgo
    • 2
  • Carlota Vaz Patto
    • 3
  • Arnel R. Hallauer
    • 4
  1. 1.Departamento de Fitotecnia, Sector de Protecção VegetalEscola Superior Agrária de CoimbraCoimbraPortugal
  2. 2.Estação Agronómica Nacional (EAN)Instituto Nacional de Recursos BiológicosOeirasPortugal
  3. 3.Plant Cell Biotechnology LaboratoryInstituto de Tecnologia Química e Biológica, Universidade Nova de LisboaOeirasPortugal
  4. 4.Department of AgronomyIowa State UniversityAmesUSA

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