Fig. 3

Distribution patterns of gene density, QTLs, M-QTLs, M-QTL–spanning genes, and CGs across the rice genome. The outermost circle represents the rice chromosomes with genomic positions indicated in megabases (Mb). The second circle, shown in purple, depicts gene density across the genome. The third and fourth inner circles represent the number of initial Fe-toxicity tolerance QTLs and the identified M-QTL–associated genes, respectively. The fifth (innermost) circle highlights the 84 CGs underlying the M-QTL regions.