Euphytica

, Volume 132, Issue 3, pp 259–268

Genetic characterization of banana cultivars (Musa spp.) from Brazil using microsatellite markers

Authors

  • S. Creste
    • Departamento de Genética, Escola Superior de Agricultura `Luiz de Queiroz'Universidade de São Paulo
  • A. Tulmann Neto
    • Centro de Energia Nuclear na AgriculturaUniversidade de São Paulo
  • S. de Oliveira Silva
    • EMBRAPA Mandioca e Fruticultura; R. Embrapa
  • A. Figueira
    • Centro de Energia Nuclear na AgriculturaUniversidade de São Paulo
Article

DOI: 10.1023/A:1025047421843

Cite this article as:
Creste, S., Tulmann Neto, A., de Oliveira Silva, S. et al. Euphytica (2003) 132: 259. doi:10.1023/A:1025047421843

Abstract

Microsatellite markers were used to characterize 35 banana (Musa spp.)genotypes cultivated in Brazil, including triploid cultivars and tetraploid hybrids. A total of 33 Musa-specific primers were tested, and 11 produced clear ,reproducible and discrete bands. The average number of alleles amplified per primer was 6.1, ranging from 4 to 8, with a total of 67 alleles identified. Phenetic analysis based on Jaccard similarity index derived from presence or absence of the alleles agreed with the morphological classification. Bootstrap analysis divided the genotypes into four clusters, according to genomic group and subgroup classification. The first cluster contained the majority of cultivars which have ‘A’ genome alone; while the second contained all triploid cultivars of the subgroup Prata (Pome) and their tetraploid hybrids. The third cluster contained cultivar ‘Maçã’ together with other genotypes considered for breeding purposes as similar to the Silk subgroup. These last two clusters formed a larger group including the majority of genotypes that resulted from hybridization between M. acuminata and M. balbisiana. The microsatellite loci were highly informative, with some pair of primers generating an unique finger printing for each genomic group and discriminating a genotype of doubtful classification, although somatic mutants from a subgroup were seldom distinguished from their original clone. Tetraploid hybrids exhibited distortion in the proportion of alleles donated by their triploid female parent. For a few primers, some genotypes exhibited a higher number of alleles than expected from their ploidy level, suggesting the occurrence of duplicated alleles or duplicated chromosomal regions.

genetic similaritygermplasmMusaPCRploidysilver stainingsimple sequence repeats

Copyright information

© Kluwer Academic Publishers 2003