(Citrullus lanatus)
Cucurbitaceae
family
Watermelons are native to Africa. They were first domesticated by the Egyptians, sometime around 2000 B.C., although wild types are found throughout sub-Saharan Africa. Watermelons are annual, monoecious diploids (2n=22), although seedless triploid cultivars are now commercially common. These triploid fruit are made via hybridization between diploids and tetraploids. Watermelons grow best in hot summers.