Association mapping reveals the genetic architecture of tomato response to water deficit: focus on major fruit quality traits.

ABSTRACT: Water scarcity constitutes a crucial constraint for agriculture productivity. High-throughput approaches in model plant species identified hundreds of genes potentially involved in survival under drought, but few having beneficial effects on quality and yield. Nonetheless, controlled water deficit may improve fruit quality through higher concentration of flavor compounds. The underlying genetic determinants are still poorly known. In this study, we phenotyped 141 highly diverse small fruit tomato accessions for 27 traits under two contrasting watering conditions. A subset of 55 accessions exhibited increased metabolite contents and maintained yield under water deficit. Using 6100 single nucleotide polymorphisms (SNPs), association mapping revealed 31, 41, and 44 quantitative trait loci (QT

SUBMITTER: Albert E 

PROVIDER: S-EPMC5181584 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature