Artículos de revistas
Single and joint effect of the basal region of chromosome 2 and centromeric region of chromosome 8 on morphological and fruit quality traits in tomato
Fecha
2016-08Registro en:
Green, Gisela Yael; Pereira Da Costa, Javier Hernán; Cambiaso, Vladimir; Pratta, Guillermo Raúl; Zorzoli, Roxana; et al.; Single and joint effect of the basal region of chromosome 2 and centromeric region of chromosome 8 on morphological and fruit quality traits in tomato; Springer; Euphytica; 210; 3; 8-2016; 327-339
0014-2336
CONICET Digital
CONICET
Autor
Green, Gisela Yael
Pereira Da Costa, Javier Hernán
Cambiaso, Vladimir
Pratta, Guillermo Raúl
Zorzoli, Roxana
Rodríguez, Gustavo Rubén
Resumen
The goal of this study was to estimate the single and joint effect of the basal region of chromosome 2 and centromeric region of chromosome 8 on morphological and fruit quality traits in tomato (Solanum lycopersicum). The analysis was performed in a population derived from a cross between Rio Grande of S. lycopersicum and LA1589 of S. pimpinellifolium that segregates for both genomic regions. Four major QTLs were found on chromosome 2 and three on chromosome 8, all of them related with morphological traits. QTLs for fruit shape index, proximal fruit end angle and distal fruit end protrusion showed epistatic interaction. Both genomic regions (fs2.1 and fs8.1) explained 62, 47 and 46 % of the phenotypic variability for fruit shape index, proximal fruit end angle and distal fruit end protrusion respectively. Minor QTLs were detected for other morphological and quality traits such as color, pH and fruit shelf life on chromosomes 2 and 8. Only single genomic region effects were found for quality trait. On the other hand, fs2.1 and fs8.1 regions control several fruit morphology attributes following a digenic linear additive model with epistatic interactions.