An experimental study of concise representations for frequent patterns

Department of Computer Sciences, Faculty of Sciences of Tun is - CRIL Len

Crystal structure, phase transitions, optical and electrical properties in a new Cu-halide organic-inorganic hybrid

International audienc

Apple fruit texture QTLs: year and cold storage effects on sensory and instrumental traits

Postharvest texture change is a fundamental question for fruit growers and breeders as it drives consumer acceptability. To decipher the genetic control of fruit texture, we studied an apple segregating population over 2 years at harvest and after 2 months of cold storage. Texture complexity was dissected in quantitative traits, related to (i) sensory perception of fruit quality and (ii) fruit mechanical properties. Genetic models including storage, genotype and their interaction effects were built. After selection of a model, broad sense heritabilities were estimated. Strong genetic and storage effects were identified for all texture traits with significant interaction. Moreover, the structure of traits co-variations was preserved after storage. Based on the new integrated genetic map, numerous quantitative trait loci (QTLs) were detected, revealing multigenic control of fruit texture traits. QTLs were clustered according to the kind of texture assessment i.e. penetrometry, compression and sensory. Moreover, QTL stability over years and storage periods was investigated. Lastly, a short list of relevant texture traits, such as fruit global hardness and fruit deformation until skin failure, is proposed to optimize texture phenotyping for future quantitative genetic studies

Genetic Mapping and Detection of Quantitative Trait Loci

UMR AGAP - équipe AFEF - Architecture et fonctionnement des espèces fruitièresOlive tree is a long-living woody species with similar genomic and phenotypic constraints to other perennial fruit crops. However, compared to apple, grape, and peach, genomic investigations for designing innovative breeding strategies are still limited to only preliminary research in this species. In this chapter, we aim to describe the studies on genetic mapping and underline the most promising investigations and initiatives to build a Mediterranean network suitable for establishing robust marker-trait associations through QTL mapping and association studies. These tools should serve to finally implement new breeding programs driven by marker-assisted breeding