Genetic diversity among Brazilian soybean cultivars based on SSR loci and pedigree data

Autor(es)

Geribello Priolli, Regina Helena ^[1] ; Pinheiro, Jose Baldin ^[1] ; Zucchi, Maria Imaculada ^[2] ; Bajay, Miklos Maximiliano ^[2] ; Vello, Natal Antonio ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Escola Super Agr Luiz de Queiroz, Dept Genet, BR-13400970 Piracicaba, SP - Brazil

^[2] Inst Agron Campinas, Ctr Pesquisa & Desenvolvimento Recursos Genet Veg, BR-13001970 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Brazilian Archives of Biology and Technology; v. 53, n. 3, p. 519-531, mar./jun. 2010.
• Área do conhecimento: Ciências Biológicas - Genética
• Citações Web of Science: 11
• Assunto(s): Feijão de soja Repetições de microssatélites

Resumo

In this study, simple sequence repeats (SSR) loci and pedigree data were used to investigate the genetic relationship in a group of 168 Brazilian soybean cultivars. Eighteen SSR loci produced an average of 5.06 alleles and a mean gene diversity of 0.58 for the cultivars studied. Genetic distance (GD) was determined using the modified Roger's Wright distance, and a final dendrogram was in agreement with the cultivar pedigree. A distance matrix based on the coefficient of parentage scores was also generated for the cultivars, which ranged from 0 to 1, with a mean of 0.18, whereas SSR-based genetic similarity (1- GD) ranged from 0.01 to 0.90, with a mean of 0.25. Mantel's Z test showed that the similarity matrices generated from both the data sets were low, but significantly correlated (r = 0.31, p<0.001). The results showed that SSR data and pedigree analyses could help to quantify more accurately the degree of relationship among the soybean cultivars. (AU)

• Processo FAPESP: 08/56249-9 - Análise de associação usando SSR e SNP para obtenção de QTL para conteúdo de óleo de soja
• Beneficiário: Regina Helena Geribello Priolli
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOEN - Jovens Pesquisadores