Fig. 6

Synteny and Ka/Ks ratio calculated analysis of LRR-RLK genes. a Synteny analysis of LRR-RLK genes from Sorghum bicolor with two Saccharum species. Gray lines in the background, orange and blue lines between Saccharum and Sorghum bicolor, and pink lines between Saccharum spontaneum and Saccharum officinarum indicate the collinear blocks and syntenic LRR-RLK pairs in normal and recombinant regions of chromosomes, respectively. b The Ka/Ks ratio of orthologs LRR-RLK genes from Sorghum bicolor and Saccharum