Figure 2.

Fine-mapping and gene candidates for GN2. (A) The introgression condition of YIL19. The boxes represent rice chromosomes: solid boxes represent the chromosome segment from Yuanjiang common wild rice and the open boxes represent the segments from Teqing. (B) Grain number of YIL19 and Teqing, and their heterosis. (C) Primary mapping of GN2 between markers RM318 and RM6312. R represents the number of individuals in a population. (D) Fine-mapping of GN2 harboring a 47-kb region of AP005303. (E) The putative candidate genes for GN2 based on the annotation of Nipponbare. The open boxes represent the exons of genes based on the annotated information. (F) The gene structures of LOC_Os02g56630 in YIL19 and Teqing. The black box indicates the exon of LOC_Os02g56630; the black lines indicate introns and intergenic regions, while the red box indicates the inserted DNA segment of LOC_Os02g56630 in YIL19. (G) The mRNA splices of new transcripts. The boxes indicate the exons of the new transcripts, while different types of stripes and dots in the boxes represent the sequences having different origins. (H) The gene structure of the new transcripts. The boxes indicate the exons of new transcripts, while black lines among the boxes are the introns and intergenic sequences. The direct repeat sequences are marked by TGCATAAGCA, while the polyadenylation sites are marked by AATAAA. (I) The alternative splicing style of the new transcripts. The sequence in yellow is the exon of the new transcripts; the sequence in red represents the splicing site. The black arrows are pointing to the splicing site. The 3-bp deletion sequence in GN2.2 is underlined with a black line. Chr, chromosome; mRNA, messenger RNA.