Cucurbita moschata


Cucurbita moschata is a species originating in the tropical Americas which is cultivated for edible flesh, flowers, greens, and seeds. It includes cultivars known in English as squash or pumpkin. Cultivars of C. moschata are generally more tolerant of hot, humid weather than squash of other domesticated species. C. moschata also exhibit a greater resistance to certain disease and insects, notably including to the squash vine borer. Commercially-made pumpkin pie mix is most often made from varieties of C. moschata.

History

All species of squashes and pumpkins are native to the Western Hemisphere, and the ancestral members of the genus Cucurbita were present in the Americas before humans. Squash are important food plants of the original people of the region, ranking next to maize and beans in many precolonial American economies.
In the modern era, C. moschata has been one of the most widely cultivated Cucurbita in the tropics. Even so, it has been proposed that production statistics do not reflect its true proliferation because it is often grown on a small-scale basis for local consumption. The greatest diversity among C. moschata populations can be found in the tropical Americas, suggesting a center of origin in that region. Various areas have been proposed for the origin, with one recent candidate area in northwestern South America.

Systematics

No modern Cucurbita species is considered fully genetically isolated and C. moschata can be hybridized with any other species in the genus. It has been suggested that this shows that the species of Cucurbita have diversified more recently than those of related genera such as Cucumis and Citrullus.
Historically, varieties of cushaw squash now classified as Cucurbita argyrosperma were assigned to Cucurbita moschata. A small number of C. moschata varieties are still commonly known as cushaws. Genetic research indicates that, while distinct species, C. argyrosperma and C. moschata are closely related.

Cultivars

Variety is used here interchangeably with cultivar, but not with species or taxonomic variety.