Pericarp total protein profiles as molecular markers of tomato fruit quality traits in two segregating populations.

RODRIGUEZ, GUSTAVO; PEREIRA DA COSTA, JAVIER; TOMAT, DAVID DAMIAN; PRATTA, GUILLERMO; ZORZOLI, ROXANA; PICARDI, LILIANA

SCIENTIA HORTICULTURAE

ELSEVIER SCIENCE BV

Lugar: Scottsville Pietermaritzburg; Año: 2011 vol. 130 p. 60 - 66

0304-4238

The  tomato  fruit  quality  results  of biochemical  and  physological  changes that  ocurrs  during  the ripening process. Although, the pericarp total protein profiles are less polymorphic than DNA-based markers the polimorphism in those could be directly associated with fruit quality traits. The aim of this work was to identify associations between polymorphic polipeptides from fruit pericarp at two ripening stages and fruit quality traits evaluated in two segregating populations of tomato. A cross between a normal  ripening cultivar of S.  lycopersicum  (C, Caimanta) and a genotype carrying  the nor  (non  ripening) gene  (N) as well as a cross between Caimanta and a cherry  type  tomato of S. lycopersicum var. cerasiforme (Ce) showed genetic variance for several fruit quality  traits such as fruit  weigth,  shape,  solids  soluble  content,  acidity,  color  and  fruit  shelf  life.  The  quantitative variations observed at phenotypic level had correspondence with the polymorphism detected in the protein profiles. Indeed,  the polymophic polypeptides associated with quality  fruit  traits and  fruit shelf life would be useful to assist tomato breeding programs as protein molecular markers.