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Citrumelo or Citromelo (X Citroncirus spp.) is also called Swingle citrumelo trifoliate hybrid, because it is a cold hardy citrus hybrid between a 'Duncan' grapefruit and a trifoliate orange (Poncirus trifoliata (L.) Raf.), developed by Walter Tennyson Swingle. [1]

15 relations: Blight, Botanical name, Carl Linnaeus, Citrus, Citrus hybrid, Citrus rootstock, Citrus tristeza virus, Cold-hardy citrus, Constantine Samuel Rafinesque, Grapefruit, Nematode, Phytophthora, Trifoliate orange, University of California, Riverside Citrus Variety Collection, Walter Tennyson Swingle.


Blight refers to a specific symptom affecting plants in response to infection by a pathogenic organism.

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Botanical name

A botanical name is a formal scientific name conforming to the International Code of Nomenclature for algae, fungi, and plants (ICN) and, if it concerns a plant cultigen, the additional cultivar and/or Group epithets must conform to the International Code of Nomenclature for Cultivated Plants (ICNCP).

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Carl Linnaeus

Carl Linnaeus (23 May 1707 – 10 January 1778), also known after his ennoblement as Carl von LinnéBlunt (2004), p. 171.

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Citrus is a common term and genus (Citrus) of flowering plants in the rue family, Rutaceae.

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Citrus hybrid

A citrus hybrid is typically a somatic hybrid within the genus citrus, thus, combining two different citrus varieties or species into one, in order to get intermediate traits or the most desirable traits of both parents.

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Citrus rootstock

Citrus rootstock refers to selected plants within the genus citrus, that furnish as rootstock for other citrus plants.

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Citrus tristeza virus

Citrus tristeza virus (CTV) is a viral species of the Closterovirus genus that causes the most economically damaging disease to its namesake plant genus, Citrus.

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Cold-hardy citrus

Cold hardy citrus is a general term describing citrus with increased frost tolerance which may be cultivated far beyond traditional citrus growing regions.

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Constantine Samuel Rafinesque

Constantine Samuel Rafinesque-Schmaltz, as he is known in Europe (October 22, 1783 – September 18, 1840), was a nineteenth-century polymath born near Constantinople in the Ottoman Empire and self-educated in France.

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The grapefruit (Citrus × paradisi) is a subtropical citrus tree known for its sour to semi-sweet fruit.

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The nematodes or roundworms constitute the phylum Nematoda.

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Phytophthora (from Greek φυτόν (phytón), “plant” and φθορά (phthorá), “destruction”; “the plant-destroyer”) is a genus of plant-damaging Oomycetes (water molds), whose member species are capable of causing enormous economic losses on crops worldwide, as well as environmental damage in natural ecosystems.

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Trifoliate orange

Trifoliate orange, Poncirus trifoliata (syn. Citrus trifoliata), is a member of the family Rutaceae, closely related to Citrus, and sometimes included in that genus, being sufficiently closely related to allow it to be used as a rootstock for Citrus and to readily hybridize with all Citrus species.

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University of California, Riverside Citrus Variety Collection

The UCR Citrus Variety Collection (CVC) is one of the most important collections of citrus diversity in the world.

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Walter Tennyson Swingle

Walter Tennyson Swingle (January 8, 1871 – January 19, 1952) was an American agricultural botanist who contributed greatly to the classification and taxonomy of citrus.

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Redirects here:

Citromelo, X Citroncirus.


[1] https://en.wikipedia.org/wiki/Citrumelo

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