Citrullus ecirrhosus, commonly known as Namib tsamma, is a species of perennial desert vine in the gourd family, Cucurbitaceae, and a relative of the widely consumed watermelon (Citrullus lanatus). It can be found in both Namibia and the Cape Provinces of South Africa, in particular the Namib Desert. It is the sister species to the bitter melon, Citrullus amarus with which it shares hard, white and bitter flesh.[2]
| Citrullus ecirrhosus | |
|---|---|
| |
| |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Cucurbitales |
| Family: | Cucurbitaceae |
| Genus: | Citrullus |
| Species: | C. ecirrhosus
|
| Binomial name | |
| Citrullus ecirrhosus | |
| Synonyms[1] | |
| |
The vines can crawl for up to two metres, and it has yellow flowers. As a desert plant, it is a hardy species, surviving with little water and strong sunlight. The leaves form annual stems which die back each year. The plant relies on water deep in the ground and morning fogs. It is an important source of water for numerous desert fauna. The bitter-tasting fruit it produces are known as tsamma melons.
Distribution and habitat
editThe Namib tsamma is found in Succulent Karoo habitat in dry watercourses. It has a limited distribution in South Africa. Its range is from the Richtersveld up to the western Namib in Namibia.[3]
Cultivation
editExperiments done by Simmons, Jarret, Cantrell, and Amnon in 2019 introduced the hybridisation of Citrullus ecirrhosus and Citrullus lanatus developed a cultivated watermelon capable of resistance to pests such as whiteflies (Bemisia tabaci). The hybrid developed whitefly resistance while still retaining traits of watermelon (Citrullus lanatus). While the hybrid did not offer total resistance, it was better protected than regular grown watermelons.[4]
Conservation status
editIn South Africa, the Namib tsamma is classified as least concern.[3]
Gallery
edit-
Seeds -
Ripening melons -
Tsamma melons in the Namib desert
_10.jpg)
_6.jpg)
References
edit- ^ "Citrullus ecirrhosus Cogn". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 16 November 2024.
- ^ Chomicki, G.; S. S. Renner (2015). "Watermelon origin solved with molecular phylogenetics including Linnaean material: another example of museomics". New Phytologist. 205 (2): 526–532. Bibcode:2015NewPh.205..526C. doi:10.1111/nph.13163. PMID 25358433.
- ^ a b "Threatened Species Programme | SANBI Red List of South African Plants". redlist.sanbi.org. Retrieved 2024-10-02.
- ^ Simmons, A. M., Jarret, R. L., Cantrell, C. L., & Amnon, L. (2019, October). Citrullus ecirrhosus: Wild Source of Resistance Against Bemisia tabaci (Hemiptera: Aleyrodidae) for Cultivated Watermelon.
External links
edit
 | This Cucurbitales article is a stub. You can help Wikipedia by expanding it. |