title: Identification of QTLs for capsaicinoids, fruit quality, and plant architecture-related traits in an interspecific Capsicum RIL population.
abstract: Quantitative trait loci (QTL) analyses in pepper are common for horticultural, disease resistance, and fruit quality traits; although none of the studies to date have used sequence-based markers associated with genes. In this study we measured plant architectural, phenological, and fruit quality traits in a pepper mapping population consisting of 92 recombinant inbred lines derived from a cross between Capsicum frutescens acc. 2814-6 and C. annuum var. NuMexRNAKY. Phenotypic measurements were correlated to loci in a high-density EST-based genetic map. In total, 96 QTL were identified for 38 traits, including 12 QTL associated with capsaicinoid levels. Twenty-one loci showed correlation among seemingly unrelated phenotypic categories, highlighting tight linkage or shared genetics between previously unassociated traits in pepper.
authors: Seed Biotechnology Center, University of California, Davis, CA 95616, USA.
authors: Shawn C
authors: SC
authors: Yarnes
authors: Hamid
authors: H
authors: Ashrafi
authors: Sebastian
authors: S
authors: Reyes-Chin-Wo
authors: Theresa A
authors: TA
authors: Hill
authors: Kevin M
authors: KM
authors: Stoffel
authors: Allen
authors: A
authors: Van Deynze
mesh_terms: D002211:Capsaicin / Q000032:analysis*; D002212:Capsicum / Q000737:chemistry / Q000235:genetics*; D003433:Crosses, Genetic; D020224:Expressed Sequence Tags; D005638:Fruit / Q000235:genetics*; D017343:Genes, Plant; D007178:Inbreeding; D010641:Phenotype; D020161:Physical Chromosome Mapping; D040641:Quantitative Trait Loci
chemical_list: D002211:Capsaicin