Fig. 6From: Molecular structures and functional exploration of NDA family genes respond tolerant to alkaline stress in Gossypium hirsutum L.Syntenic relationship of duplicated NDA gene pairs from four Gossypium species (G. hirsutum, G. barbadense, G. arboreum, and G. raimondii). Chromosomal lines represented by various colors indicates the syntenic regions around the NDA genes, the duplication pairs were connected by lines. The heat map in the circle represented the density of genes on chromosomeBack to article page