Identification of Genes of Molecular Marker TGS0892 on Chromosome 6 and Its Mechanism of Soluble Solids Metabolism in Tomato

Tomato (Solanum lycopersicum L.) is one of the vegetables widely cultivated in world, whose fruits are rich nutrients. Soluble solids content (SSC) important factors affecting tomato fruit flavor and plays a decisive role improving quality. Molecular markers genetic that reveal plant polymorphism at DNA level, which have advantages breeding purposes, increasing selection efficiency, shortening years. The molecular marker TGS0892 located on chromosome 6 genome closely related to soluble solids. In present work, five different cultivars were used as experimental materials. results showed ‘TD-10’ had lightest single weight highest content, while ‘TD-8’ ‘TD-9’ heavier lowered content. Seventeen genes within 50 kb upstream downstream identified using bioinformatics methods, their structural analysis functional annotation performed. Quantitative reverse transcription PCR (RT-qPCR) expression levels 17 classified into two major categories, with ‘TD-7’ other cultivars, respectively. Soly065970 Soly066010 significantly more expressed high (‘TD-7’ ‘TD-10’) less low cultivar (‘TD-9’). suggested may be involved regulating metabolic process, provides reference for studying formation mechanism highly tomatoes.