A novel genotype DATTO5 developed using the five genes exhibits the fastest heading date designed in rice.

ABSTRACT: The optimization of heading date is a key aspect for maximizing grain productivity in cereal crops including rice. The combinations of genes for heading date, a quantitative trait, are a major driver in the wide adaptability of cultivated rice worldwide. Here, we identified a novel QTL, qDTH3 (quantitative trait locus for days-to-heading on chromosome 3), for early flowering time in the F₂ population derived from a cross between Hoshinoyume (HS) and Daichinohoshi (DH) among local rice populations with extremely early heading date. The DH allele at qDTH3, qDTH3^DH , headed 2.7 days earlier than the HS allele at qDTH3, qDTH3^HS . We sought to design a genotype for earlier heading date by pyramiding of five heading date genes.

SUBMITTER: Fujino K 

PROVIDER: S-EPMC7272244 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature