Citrullus ecirrhosus

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Citrullus ecirrhosus
Citrullus ecirrhosus fruit MHNT.JPG
Citrullus ecirrhosus-1441 - Flickr - Ragnhild & Neil Crawford.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Cucurbitales
Family: Cucurbitaceae
Genus: Citrullus
Species:
C. ecirrhosus
Binomial name
Citrullus ecirrhosus
Cogn. 1888
Synonyms [1]
  • Colocynthis ecirrhosus(Cogn.) Chakrav.

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]

Contents

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

The 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

Experiments 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

In South Africa, the Namib tsamma is classified as least concern. [3]

Related Research Articles

<span class="mw-page-title-main">Cucurbitaceae</span> Family of plants

The Cucurbitaceae, also called cucurbits or the gourd family, are a plant family consisting of about 965 species in 101 genera. Those of most agricultural, commercial or nutritional value to humans include:

<i>Citrullus</i> Genus of flowering plants

Citrullus is a genus of seven species of desert vines, among which Citrullus lanatus is an important crop.

<span class="mw-page-title-main">Melon</span> Type of fruit

A melon is any of various plants of the family Cucurbitaceae with sweet, edible, and fleshy fruit. The word "melon" can refer to either the plant or specifically to the fruit. Botanically, a melon is a kind of berry, specifically a "pepo". The word melon derives from Latin melopepo, which is the latinization of the Greek μηλοπέπων (mēlopepōn), meaning "melon", itself a compound of μῆλον (mēlon), "apple", treefruit " and πέπων (pepōn), amongst others "a kind of gourd or melon". Many different cultivars have been produced, particularly of cantaloupes.

<span class="mw-page-title-main">Whitefly</span> Family of insects

Whiteflies are Hemipterans that typically feed on the undersides of plant leaves. They comprise the family Aleyrodidae, the only family in the superfamily Aleyrodoidea. More than 1550 species have been described.

<i>Cucumis metuliferus</i> Vine in the cucumber and melon family

Cucumis metuliferus, commonly called the African horned cucumber, horned melon, spiked melon, jelly melon, or kiwano, is an annual vine in the cucumber and melon family Cucurbitaceae. Its fruit has horn-like spines, hence the name "horned melon". The ripe fruit has orange skin and lime-green, jelly-like flesh. C. metuliferus is native to Southern Africa, in South Africa, Namibia, Botswana, Zambia, Malawi, Zimbabwe, Mozambique, and Angola.

<i>Gerbera jamesonii</i> Species of flowering plant

Gerbera jamesonii is a species of flowering plant in the genus Gerbera belonging to the basal Mutisieae tribe within the large Asteraceae family. It is indigenous to South Eastern Africa and commonly known as the Barberton daisy, the Transvaal daisy, and as Barbertonse madeliefie or Rooigousblom in Afrikaans. It was the first species of Gerbera to be the subject of a scientific description, studied by J. D. Hooker in Curtis's Botanical Magazine in 1889.

<span class="mw-page-title-main">Silverleaf whitefly</span> Species of true bug

The silverleaf whitefly is one of several species of whitefly that are currently important agricultural pests. A review in 2011 concluded that the silverleaf whitefly is actually a species complex containing at least 40 morphologically indistinguishable species.

<i>Citrullus colocynthis</i> Species of vine

Citrullus colocynthis, with many common names including Abu Jahl's melon, colocynth, bitter apple, bitter cucumber, egusi, vine of Sodom, or wild gourd, is a poisonous desert viny plant native to the Mediterranean Basin and West Asia, especially the Levant, Turkey, and Nubia.

<span class="mw-page-title-main">Egusi</span> Type of seed commonly found in West African cuisine

Egusi (Yoruba) is the name for the protein-rich seeds of certain cucurbitaceous plants, which, after being dried and ground, are used as a major ingredient in West African cuisine. Egusi is a Yoruba word, and the popular method of cooking it is deeply rooted in Yoruba culinary traditions.

<i>Cucumis myriocarpus</i> Berry and plant

Cucumis myriocarpus, the gooseberry cucumber, gooseberry gourd, paddy melon, Mallee Pear or prickly paddy melon, is a prostrate or climbing annual herb native to tropical and southern Africa. It has small, round, yellow-green or green-striped fruit with soft spines, small yellow flowers and deeply lobed, light green leaves. The melon occurs in disturbed soil and cleared or bare areas, and thrives on summer moisture.

<span class="mw-page-title-main">Watermelon seed oil</span> Seed oil from Citrullus lanatus

Watermelon seed oil is extracted by pressing from the seeds of the Citrullus lanatus (watermelon). It is particularly common in West Africa, where it is also called ootanga oil.

<span class="mw-page-title-main">Citron melon</span> Species of fruit and plant

The citron melon, also called fodder melon, preserving melon, red-seeded citron, jam melon, stock melon, Kalahari melon or tsamma melon, is a relative of the watermelon. It is from the family Cucurbitaceae which consists of various squashes, melons, and gourds. Native to arid landscapes of sub-Saharan Africa, it has been a wild source of nutrition and hydration for humans for an extraordinarily long time. Its fruit has a hard white flesh, rendering it less likely to be eaten raw in the modern era; more often it is pickled or used to make fruit preserves, and is used for cattle feed. It is especially useful for fruit preserves, because it has a high pectin content.

Tomato yellow leaf curl virus (TYLCV) is a DNA virus from the genus Begomovirus and the family Geminiviridae. TYLCV causes the most destructive disease of tomato, and it can be found in tropical and subtropical regions causing severe economic losses. This virus is transmitted by an insect vector from the family Aleyrodidae and order Hemiptera, the whitefly Bemisia tabaci, commonly known as the silverleaf whitefly or the sweet potato whitefly. The primary host for TYLCV is the tomato plant, and other plant hosts where TYLCV infection has been found include eggplants, potatoes, tobacco, beans, and peppers. Due to the rapid spread of TYLCV in the last few decades, there is an increased focus in research trying to understand and control this damaging pathogen. Some interesting findings include the virus being sexually transmitted from infected males to non-infected females, and an evidence that TYLCV is transovarially transmitted to offspring for two generations.

<span class="mw-page-title-main">Watermelon</span> Large gourd fruit with a smooth hard rind

Watermelon is a flowering plant species of the Cucurbitaceae family and the name of its edible fruit. A scrambling and trailing vine-like plant, it is a highly cultivated fruit worldwide, with more than 1,000 varieties.

Paddy melon is a common name for two species of plants in the melon family which are invasive in Australia:

Pig melon is a common name for two species of plants in the melon family which are invasive in Australia:

Hexacyrtis, common name Namib lily, is a plant genus native to Namibia and the Cape Provinces of South Africa but cultivated elsewhere as an ornamental plant. At present only one species is recognized: Hexacyrtis dickianaDinter. It bears an umbel with nodding flowers, the tepals recurved, red towards the tips but yellow near the center.

<i>Sweet potato leaf curl virus</i> Species of virus

Sweet potato leaf curl virus is commonly abbreviated SPLCV. Select isolates are referred to as SPLCV followed by an abbreviation of where they were isolated. For example, the Brazilian isolate is referred to as SPLCV-Br.

Kalahari melon oil also known as Tsamma (Damara/Nama), wild watermelon (English), bitterboela, karkoer (Afrikaans), wild watermelon, makatane (Setswana) or Mokaté oil, is a plant oil, extracted from the seeds of the Kalahari melon (Citrullus vulgaris), which is endemic to the Kalahari Desert, spanning Namibia, Botswana and South Africa. Being one of 1,200 varieties of melon, Kalahari melon oil is distinct from regular watermelon seed oil. The seed of the Kalahari melon consists of approximately 50% oil, 35% protein and 5% dietary fibre.

Citrullus rehmii, commonly known as the Namib melon, or the reins melon, is a species of annual melon in the family Cucurbitaceae that is native to the Namib Desert, Namibia. It was described by Bernard de Winter in 1990. The species has a dark grey rind, with light brown-orange spots scattered throughout. It forms a vine with dark green leaves, and a light green stem. Flowers are a yellow color on the inside, and a white on the inside. They are non-edible, and are vastly different from other species of melon based on its general appearance. The species is quite hard to find in its natural range, but has been spotted on more than one occasion. It is somewhat used as an ornamental plant, and overlaps with the Namib tsamma in Namibia.

References

  1. "The Plant List: A Working List of All Plant Species" . Retrieved 8 October 2014.
  2. 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. doi: 10.1111/nph.13163 . PMID   25358433.
  3. 1 2 "Threatened Species Programme | SANBI Red List of South African Plants". redlist.sanbi.org. Retrieved 2024-10-02.
  4. Simmons, A. M., Jarret, R. L., Cantrell, C. L., &amp; Amnon, L. (2019, October). Citrullus ecirrhosus: Wild Source of Resistance Against Bemisia tabaci (Hemiptera: Aleyrodidae) for Cultivated Watermelon.