Identification and Characterization of EI (Elongated Internode) Gene in Tomato (Solanum lycopersicum).

ABSTRACT: Internode length is an important agronomic trait affecting plant architecture and crop yield. However, few genes for internode elongation have been identified in tomato. In this study, we characterized an elongated internode inbred line P502, which is a natural mutant of the tomato cultivar 05T606. The mutant P502 exhibits longer internode and higher bioactive GA concentration compared with wild-type 05T606. Genetic analysis suggested that the elongated internode trait is controlled by quantitative trait loci (QTL). Then, we identified a major QTL on chromosome 2 based on molecular markers and bulked segregant analysis (BSA). The locus was designated as EI (Elongated Internode), which explained 73.6% genetic variance. The EI was further mapped to a 75.8-kb region conta

SUBMITTER: Sun X 

PROVIDER: S-EPMC6540210 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature