Phenotyping, fine mapping and cloning of a wild species QTL that increases horticultural yield in tomatoes.

摘要: The genetic variation underlying quantitative traits results from the segregation of numerous interacting trait loci (QTLs) whose expression is modified by environment. Using a population derived green fruited tomato species L, pennellii, we identified 23 QTLs originating in wild species, that are responsible for an increase total soJuble solids (brix) fruit. To uncover molecular basis this variation, characterised one QTLs, Brix9-2-5. allele increased glucose and fructose contents cultivated fruits various backgrounds environments. nearly isogenic lines (NILs) QTL, high-resolution mapping analysis delimited Brix9-2-5 to SNP (single nucleotide polymorphism)defined recombination hotspot 484 bp spanning exon intron fruit-specific apoplastic invertase. These demonstrate link between naturally occurring DNA. Mendelian determinant complex phenotype yield-associated trait.