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Citron: Difference between revisions

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There is molecular evidence that most cultivated citrus species arose by [[Hybrid (biology)#Hybrid plants|hybridization]] of a small number of ancestral types; the citron, [[pomelo]], [[Mandarin orange|mandarin]] and, to a lesser extent, [[Papeda (citrus)|papedas]] and [[kumquat]]. The citron is usually [[fertilized]] by [[self-pollination]], which results in their displaying a high degree of genetic [[zygosity|homozygosity]]. It is the male parent of any citrus hybrid rather than a female one.<ref name="HortScience 2005" /><ref>{{cite journal |author=E. Nicolosi |author2=Z. N. Deng |author3=A. Gentile |author4=S. La Malfa |author5=G. Continella |author6=E. Tribulato |title=Citrus phylogeny and genetic origin of important species as investigated by molecular markers |journal=Theoretical and Applied Genetics |date=June 2000 |volume=100 |issue=8 |pages=1155–1166 |doi=10.1007/s001220051419|s2cid=24057066 }}</ref><ref>{{cite journal |author=Noelle A. Barkley |author2=Mikeal L. Roose |author3=Robert R. Krueger |author4=Claire T. Federici |title=Assessing genetic diversity and population structure in a citrus germplasm collection utilizing simple sequence repeat markers (SSRs) |journal=Theoretical and Applied Genetics |date=May 2006 |volume=112 |issue=8 |pages=1519–1531 |doi=10.1007/s00122-006-0255-9 |pmid=16699791 |s2cid=7667126 |url=https://naldc-legacy.nal.usda.gov/naldc/download.xhtml?id=11065&content=PDF |access-date=2018-12-04 |archive-date=2021-03-09 |archive-url=https://web.archive.org/web/20210309064039/https://naldc-legacy.nal.usda.gov/naldc/download.xhtml?id=11065&content=PDF |url-status=dead }}</ref><ref>{{cite journal |author=Asad Asadi Abkenar |author2=Shiro Isshiki |author3=Yosuke Tashiro |title=Phylogenetic relationships in the 'true citrus fruit trees' revealed by PCR-RFLP analysis of cpDNA |journal=Scientia Horticulturae |volume=102 |issue=2 |date=1 November 2004 |pages=233–242 |doi=10.1016/j.scienta.2004.01.003}}</ref><ref>{{cite journal |author=C. A. Krug |title=Chromosome Numbers in the Subfamily Aurantioideae with Special Reference to the Genus ''Citrus'' |journal=Botanical Gazette |volume=104 |number=4 |date=June 1943 |pages=602–611 |jstor=2472147 |doi=10.1086/335173|s2cid=84015769 }}</ref><ref>{{cite journal |author=R. Carvalho |author2=W. S. Soares Filho |author3=A. C. Brasileiro-Vidal |author4=M. Guerra |title=The relationships among lemons, limes and citron: a chromosomal comparison |journal=Cytogenetic and Genome Research |volume=109 |issue=1–3 |date=March 2005 |doi=10.1159/000082410 |pages=276–282 |pmid=15753587|s2cid=26046238 }}</ref><ref name="Talon">{{cite journal|title=Genomics of the origin and evolution of ''Citrus'' | last1=Wu | first1=Guohong Albert | last2=Terol | first2=Javier | last3=Ibanez | first3=Victoria | last4=López-García | first4=Antonio | last5=Pérez-Román | first5=Estela | last6=Borredá | first6=Carles | last7=Domingo | first7=Concha | last8=Tadeo | first8=Francisco R | last9=Carbonell-Caballero | first9=Jose | last10=Alonso | first10=Roberto | last11=Curk | first11=Franck | last12=Du | first12=Dongliang | last13=Ollitrault | first13=Patrick | last14=Roose | first14=Mikeal L. Roose | last15=Dopazo | first15=Joaquin | last16=Gmitter Jr | first16=Frederick G. | last17=Rokhsar | first17=Daniel | last18=Talon | first18=Manuel | journal=Nature | year = 2018 | volume=554 | issue=7692 | pages=311–316 | doi=10.1038/nature25447 | pmid=29414943| bibcode=2018Natur.554..311W | doi-access=free | hdl=20.500.11939/5741 | hdl-access=free }}</ref>
 
Archaeological evidence for citrus fruits has been limited, as neither seeds nor pollen are likely to be routinely recovered in archaeology.<ref>{{cite book |last1=Fuller |first1=Dorian Q. |last2=Castillo |first2=Cristina |last3=Kingwell-Banham |first3=Eleanor |last4=Qin |first4=Ling |last5=Weisskopf |first5=Alison |title=Charred pummelo peel, historical linguistics and other tree crops: Approaches to framing the historical context of early Citrus cultivation in East, South and Southeast Asia |url=https://books.openedition.org/pcjb/2173?lang=en#ftn2 |website=AGRUMED: Archaeology and history of citrus fruit in the Mediterranean : Acclimatization, diversifications, uses |series=Collection du Centre Jean Bérard |publisher=Publications du Centre Jean Bérard |language=en |date=15 January 2018|isbn=9782918887775 }}</ref> The citron is thought to have been native to [[India]],<ref name="Talon" /> in valleys at the foothills of the eastern [[Himalayas]]. It is thought that by the 4th century BC, when [[Theophrastus]] mentions the "Median appleaplle" Despite its scientific designa­tion, which is an adaptation of the old name in classical Greek sources “Median pome”, this fruit was not indigenous to Media or ancient Media <ref>{{https://www.iranicaonline.org/articles/citrus-fruits-}}</ref> <ref>''Inquiry into Plants'' 4.iv.2.</ref> the citron was mostly cultivated in the [[Caspian Sea]](north of Mazandarn and Gilan) on its way to the [[Mediterranean basin]], where it was cultivated during the later centuries in different areas as described by Erich Isaac.<ref>{{cite journal |author=Erich Isaac |title=The Citron in the Mediterranean: a study in religious influences |journal=Economic Geography |volume=35 |issue=1 |date=January 1959 |pages=71–78 |doi=10.2307/142080 |jstor=142080}}</ref> Many mention the role of [[Alexander the Great]] and his armies as they attacked [[Achaemenid Empire|Iran]] and what is today [[Pakistan]], as being responsible for the spread of the citron westward, reaching the [[Europe]]an countries such as [[Greece]] and [[Italy]].<ref name="Purdue Citron" /><ref name="Simoons p.200">{{cite book |author=Frederick J. Simoons |title=Food in China: a cultural and historical inquiry |publisher=CRC Press |year=1990 |isbn=9780849388040 |url=https://books.google.com/books?id=Fo087ZxohA4C&q=alexander+the+great+citron&pg=PA200 |page=200}}</ref><ref>{{cite web|url=http://www.citrusvariety.ucr.edu/citrus/ethrog.html|title=ethrog|publisher=University of California, Riverside|access-date=2008-05-04|archive-date=2015-06-08|archive-url=https://web.archive.org/web/20150608215246/http://www.citrusvariety.ucr.edu/citrus/ethrog.html|url-status=dead}}</ref><ref>{{cite book |author=Marion Eugene Ensminger |author2=Audrey H. Ensminger |url=https://books.google.com/books?id=o3UD2iL4sAAC&q=Alexander+the+great+citron&pg=PA424 |title=Foods & Nutrition Encyclopedia |edition=2nd |volume=1 |publisher=CRC Press |year=1993 |isbn=9780849389818 |page=424}}</ref><ref>{{cite book |author=Francesco Calabrese |chapter=Origin and history |editor=Giovanni Dugo |editor2=Angelo Di Giacomo |chapter-url=https://books.google.com/books?id=OLaykfpqSaYC&q=alexander+the+great+citron&pg=PA4 |title=Citrus: The Citrus Genus |publisher=CRC Press |date=2003 |page=4 |isbn=9780203216613}}</ref><ref>[https://books.google.com/books?id=SmRJnd73dbYC&dq=alexander+the+great+citron&pg=PA7 Biology of Citrus]{{dead link|date=November 2016}}</ref><ref>{{cite book |author=H. Harold Hume |url=https://books.google.com/books?id=WP3ohzxbRxgC&q=alexander+the+great+citron&pg=PA59 |title=Citrus Fruits and Their Culture |publisher=Read Books |year=2007 |isbn=9781406781564 |page=59}}</ref><ref>{{cite book |author=Emmanuel Bonavia|author-link=Emmanuel Bonavia |url=https://books.google.com/books?id=tsNBAAAAIAAJ&q=alexander%20the%20great%20citron&pg=PA255 |title=The Cultivated Oranges and Lemons, Etc. of India and Ceylon |publisher=W. H. Allen |year=1888 |page=255}}</ref>
 
=== Antiquity ===