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vol.9 suppl.3Genotyping and Phenotyping Studies in Support of a Lima Bean Breeding ProgramLos efectos heterogéneos de las condiciones climáticas en variedades locales de fréjol andinos y vainitas señalan alternativas para el manejo y conservación de cultivos índice de autoresíndice de assuntospesquisa de artigos
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Siembra

versão On-line ISSN 2477-8850

Siembra vol.9  supl.3 Quito Out. 2022

 

Sesión 3: Mejoramiento Genético

Advances in the genetic improvement of the Lima bean in Brazil

Avances en el mejoramiento genético del frijol Lima en Brasil

Regina Lucia Ferreira Gomes1  *rlfgomes@ufpi.edu.br
http://orcid.org/0000-0001-5759-7010

Ângela Celis de Almeida Lopes2 
http://orcid.org/0000-0002-9546-5403

Verônica Brito da Silva3 

1Federal University of Piauí, Centro de Ciencias Agrícolas. Teresina, Brasil

2Federal University of Piauí, Centro de Ciencias Agrícolas. Teresina, Brasil

3Federal University of Piauí, Centro de Ciencias Agrícolas. Teresina, Brasil


Keywords Phaseolus lunatus; plant breeding; plant architecture; anthracnose resistance; commercial standard of seeds

Lima bean (Phaseolus lunatus L.) is an important species to Brazil, especially to the Northeast region, and presents high genetic variability. Considering the availability of Lima bean genotypes deposited in the Germplasm Bank from Federal University of Piauí, which present potential to be used in breeding programs, efforts have been done to obtain cultivars with desirable traits, such as determined growth, uniformity of maturation, and short cycle. However, we are also developing cultivars with indeterminate growth habit to be intercropped with landraces corn, but being productive and resistant to diseases. Firstly, genotypes presenting determined growth habit and short cycle were selected at the Department of Plant Sciences from University of California, Davis (USA) were used in the biparental crosses with landraces from Brazil, Argentina, Africa, and Mexico. Currently, we are evaluating, in the experimental field from Department of Plant Science, Federal University of Piauí, Brazil, six populations with determined growth habit, in F6 generation, and five populations with indeterminate habit, in F4 generation. In Brazil, the selection of parents focuses on growth habit, resistance to diseases (anthracnose) and commercial standard of seeds. We used three genotypes resistant to anthracnose and with indeterminate growth habit, and three accessions with determined habit, large white seeds, and where populations in F4 generation have been advanced by the Bulk method. We expect to select genotypes with desirable traits to the crop ideotype for the development of improved cultivars.

*

Nacionalidad Brasileña. Graduada en Ingeniería Agronómica en la Universidad Estatal del Marañao, maestría en Genética y Mejoramiento por la Universidad Federal de Viçosa, doctorado en Genética y Mejoramiento de Plantas por la Escuela Superior de Agricultura Luiz de Queiroz de la Universidad de Sao Paulo, posdoctorado en Genética y Mejoramiento de Plantas en la Universidad de California, campus Davis. Actualmente es profesora Titular de la Universidad Federal de Piauí y becaria de productividad del Consejo Nacional de Desarrollo Científico y Tecnológico de Brasil (CNPq), nivel 1C. Es profesora titular del Programa de Posgrado en Agronomía (maestría y doctorado), en el área de concentración en Genética y Mejoramiento. Desarrolla investigaciones sobre recursos fitogenéticos y fitomejoramiento, principalmente frijol Lima (Phaseolus lunatus L.) y diferentes especies del género Capsicum, además de especies nativas de la región Nordeste de Brasil.

Creative Commons License Esta obra está bajo una Licencia Creative Commons Atribución-NoComercial 4.0 Internacional.