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Type: Artigo
Title: A lima bean core collection based on molecular markers
Author: Ferreira Gomes, Regina Lucia
Costa, Marcones Ferreira
Alves-Pereira, Alessandro
Bajay, Miklos Maximiliano
Gomes Viana, Joao Paulo
dos Santos Valente, Sergio Emilio
de Almeida Lopes, Angela Celis
Zucchi, Maria Imaculada
Pinheiro, Jose Baldin
Abstract: Some germplasm collections have a high number of accessions, which makes it difficult to explore the genetic variability present in the germplasm bank due to the redundancy and the difficulty of detailed analysis of all conserved accessions. Therefore, our study aimed to analyze the genetic diversity of 153 lima bean (Phaseolus lunatus) accessions for the purpose of constructing a core collection. Eleven SSRs were used for this purpose. The 153 lima bean accessions can be represented by low redundancy using a minimum of 34 accessions, thus representing 22 % of the size of the entire germplasm bank. The core collection had a higher Shannon diversity index and expected heterozygosity (1.906 and 0.811, respectively) than those presented by the entire germplasm bank (1.605 and 0.713, respectively), indicating a higher polymorphism of the representative cultivars in relation to the entire collection. The accessions selected for the core collection may be used in future studies of genome association as well as in genetic crosses in breeding programs aimed at developing improved cultivars with high genetic diversity which can meet current and future market needs
Subject: Repetições de microssatélites
Country: Brasil
Editor: Universidade de São Paulo/Escola Superior de Agricultura "Luiz de Queiroz"
Rights: Aberto
Identifier DOI: 10.1590/1678-992X-2018-0140
Date Issue: 2020
Appears in Collections:IB - Artigos e Outros Documentos

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