Conclusion
The genus Citrullus includes seven species that may originate
from different parts of the world, according to previous and current
data. Our results reveal 38 distinct chloroplast haplotypes amongCitrullus spp. and the distribution of those haplotypes across
the world. The close relationship of egusi melon and Kordofan melon to
watermelon raised new questions regarding the colonization routes of
major crops and the current status of extant genetic diversity of wild
relatives in places of origin.