Genetic variability assessment in the genus Passiflora by SSR markers

Claudia Lougon Paiva1*, Alexandre Pio Viana1, Eileen Azevedo Santos1, Josie Cloviane de Oliveira Freita1, Raimundo Nonato Olivera Silva1, and Eder Jorge de Oliveira2
The genus Passiflora encompasses many species that are endemic to the Brazilian territory, including some with economic value. Studies on genetic diversity in this genus are fundamental because they allow understanding genetic variability and distance. The present study aimed to determine the genetic variability and distances among 10 species of the genus Passiflora by using microsatellite markers (Simple Sequence Repeat, SSR). Twenty-eight heterologous microsatellite markers were tested, but only 12 were used in the diversity analysis because they amplified in at least 80% of the species. A clear separation was observed among the subgenuses studied, as well as wide variation among the accessions of Passiflora. This knowledge enables breeders to explore diversity and transfer favorable alleles found in wild species.
Keywords: Breeding, genetic diversity, Passiflora.
1Universidade Estadual do Norte Fluminense Darcy Ribeiro/UENF, Laboratório de Melhoramento Genético Vegetal/LMGV, Av. Alberto Lamego, s/n, Campos dos Goytacazes, Rio de Janeiro, Brasil. *Corresponding author (claudialougon@gmail.com).
2Embrapa Mandioca e Fruticultura, Rua Embrapa s/nº, Cruz das Almas, Bahia, Brasil.