Identification of Rice Large Grain Gene GW2 by Whole-Genome Sequencing of a Large Grain-Isogenic Line Integrated with Japonica Native Gene and Its Linkage Relationship with the Co-integrated Semidwarf Gene d60 on Chromosome 2.

Abstract excerpt

Genetic analysis of "InochinoIchi," an exceptionally large grain rice variety, was conducted through five continuous backcrosses with Koshihikari as a recurrent parent using the large grain F3 plant in Koshihikari × Inochinoichi as a nonrecurrent parent. Thorough the F2 and all BCnF2 generations, large, medium, and small grain segregated in a 1:2:1 ratio, indicating that the large grain is controlled by a single...

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