SELEÇÃO DE GENÓTIPOS SUPERIORES DE VARIEDADES CRIOULAS DE FEIJÃO-FAVA POR ABORDAGEM MULTIVARIADA

José Ribamar de Assunção Filho; Marcones Ferreira Costa; José Baldin  Pinheiro; Leonardo Castelo Branco Carvalho; Regina Lucia Ferreira Gomes; Angela Celis de Almeida Lopes

doi:10.1590/1983-21252022v35n109rc

Authors

José Ribamar de Assunção Filho Department of Plant Science, Universidade Federal do Piauí, Teresina, PI https://orcid.org/0000-0002-7037-2091
Marcones Ferreira Costa Universidade Federal do Piauí, Floriano, PI https://orcid.org/0000-0001-8210-2673
José Baldin Pinheiro Department of Genetics, College of Agriculture ‘‘Luiz de Queiroz’’, Universidade de São Paulo, Piracicaba, SP https://orcid.org/0000-0003-1294-2081
Leonardo Castelo Branco Carvalho Department of Plant Science, Universidade Federal do Piauí, Teresina, PI https://orcid.org/0000-0001-5722-9322
Regina Lucia Ferreira Gomes Department of Plant Science, Universidade Federal do Piauí, Teresina, PI https://orcid.org/0000-0002-7700-6959
Angela Celis de Almeida Lopes Department of Plant Science, Universidade Federal do Piauí, Teresina, PI https://orcid.org/0000-0002-9546-5403

DOI:

https://doi.org/10.1590/1983-21252022v35n109rc

Keywords:

Breeding programs. Genetic diversity. Genetic resources.

Abstract

The knowledge of genetic diversity in plant population is essential to the success of plant breeding programs. Thus, previous characterization of landraces is one of the first steps before the indication of genotypes to these plant breeding programs. This study aimed to characterize, through morphological traits, and estimate the genetic diversity in landraces of lima bean (Phaseolus lunatus L.). Genetic diversity was estimated by using multivariate methods that selected individual landraces to be indicated for farmers and consumers. According to morphological traits proposed by Biodiversity International, the genotypes UFPI-667 and UFPI-682 showed higher dissimilarity and high potential to be used in crosses since they are genetically distant and complementary. The principal component analysis identified positive and significant phenotypic associations between variables: pod length, pod width, and grain production. According to the multivariate methods used, the landraces UFPI-666, UFPI-650, UFPI-651, UFPI-687, UFPI-658, UFPI-673, UFPI-667, and UFPI-674 are potential candidates for selection since they have relevant features for lima bean breeding, such as shorter cycles and higher grain production. This study showed that multivariate analysis can be used as an effective tool to find potential traits in lima bean and can assist the lima bean breeders in the selection of potential landraces. Accessions UFPI-667 and UFPI-682 can be indicated as genitors for breeding programs, as they are genetically distant and complementary in their characteristics.

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