Genetic similarity among accessions of Paspalum notatum Flügge (Poaceae) : a potential to parental selection

• Autor(a) principal: Fachinetto, Juliana Maria
• Data de Publicação: 2021
• Outros Autores: Dall'Agnol, Miguel, Schneider-Canny, Raquel, Janke-Porto, Aline, Souza, Mariângela Gil de
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UFRGS
• Texto Completo: http://hdl.handle.net/10183/262383
• topic: Paspalum notatum; Graminea forrageira; Melhoramento genético vegetal; Breeding; Forage grass; Heterosis; SSR markers

Paspalum notatum is an important forage grass contributing significantly to the coverage of the natural fields of Southern Brazil. Simple sequence repeat (SSR) markers were used to evaluate the genetic similarity of strains within a P. notatum collection. Genomic DNA was extracted in bulk from young leaves of five plants from each accession obtained from the USDA. In the molecular analysis, the eight SSR markers evaluated formed seven distinct groups, and two isolated genotypes, with an average similarity index of 0.29, ranging from zero to 0.83. All the loci were polymorphic and the polymorphism information content ranging from 0.41 to 0.69. The results evidenced a low genetic similarity, which can be explored via parental selection in a breeding program.