Figure 4.

Location of causal locus for the loss of long awns in O. glaberrima. (A) The graphical genotype of the parental BC₄F₁ plant that showed segregation of long awn phenotype in its progenies. Gray boxes indicate homozygous regions derived from O. glaberrima, whereas heterozygous segments of O. sativa and O. glaberrima are indicated in white. Shaded boxes in chromosomes 4 and 8 represent the location of RAE1/An-1 and the candidate region of RAE2, respectively. RAE1 and RAE2 regions have been fixed as the O. glaberrima homozygote in the BC₄F₁. (B) RAE3 was roughly mapped at a 1.9-Mb region in chromosome 6 flanked by the genotype markers, 6KG28331 and 6KG30196. Numbers below the marker names indicate the number of recombinants.