Editing Key lime (section)

== Taxonomy ==
{{See also|Citrus taxonomy}}
[[File:Map of inferred original wild ranges of the main Citrus cultivars, and selected relevant wild taxa (Fuller et al., 2017).png|thumb|Map of inferred original wild ranges of the main ''Citrus'' cultivars, and selected relevant wild taxa<ref name="fuller">{{cite book|first1=Dorian Q. |last1=Fuller |first2=Cristina |last2=Castillo |first3=Eleanor|last3=Kingwell-Banham|first4=Ling|last4=Qin|first5=Alison|last5=Weisskopf|editor1-first=Véronique |editor1-last=Zech-Matterne |editor2-first=Girolamo|editor2-last=Fiorentino|title =AGRUMED: Archaeology and history of citrus fruit in the Mediterranean |chapter =Charred pomelo peel, historical linguistics and other tree crops: approaches to framing the historical context of early Citrus cultivation in East, South and Southeast Asia |publisher =Publications du Centre Jean Bérard|year =2017|pages=29–48|isbn =9782918887775|doi=10.4000/books.pcjb.2107|url=https://hal.archives-ouvertes.fr/hal-03501166/file/2017-Ruas-etal-Citrus.pdf |chapter-url =https://books.openedition.org/pcjb/2173?lang=en}}</ref>]]
The Key lime cultivar is a [[citrus hybrid]], ''[[Citrus micrantha]]'' × ''[[Citron|Citrus medica]]'' (a [[Papeda (citrus)|papeda]]-[[citron]] cross).<ref>{{cite journal|title=Next generation haplotyping to decipher nuclear genomic interspecific admixture in ''Citrus'' species: analysis of chromosome 2 |journal=BMC Genetics |volume=15 |page=152 |year=2014 |last1=Curk |first1=Franck |last2=Ancillo |first2=Gema Ancillo |last3=Garcia-Lor |first3=Andres |last4=Luro |first4=François |last5=Perrier |first5=Xavier |last6=Jacquemoud-Collet |first6=Jean-Pierre |last7=Navarro |first7=Luis |last8=Ollitrault |first8=Patrick |doi=10.1186/s12863-014-0152-1 |pmid=25544367 |pmc=4302129 |doi-access=free }}</ref><ref name=GRIN>{{GRIN |''Citrus'' × ''aurantiifolia'' |10683 |access-date=11 December 2017}}</ref><ref name=Nicolosi>{{cite journal |last1=Nicolosi |first1=E. |last2=Deng |first2=Z.N. |last3=Gentile |first3=A. |last4=La Malfa |first4=S. |last5=Continella |first5=G. |last6=Tribulato |first6=E. |year=2000 |title=''Citrus'' phylogeny and genetic origin of important species as investigated by molecular markers |journal=Theoretical and Applied Genetics |volume=100 |issue=8|pages=1155–1166 |doi=10.1007/s001220051419 |s2cid=24057066}}</ref>

The Key lime has given rise to several other lime varieties.  The best known, the [[Polyploid|triploid]] progeny of a Key lime-lemon cross, is the [[Persian lime]] (''Citrus × latifolia''), the most widely produced lime, globally. Others are, like their parent, classed within ''C. aurantiifolia''. [[Backcross]]ing with [[citron]] has produced a distinct group of triploid limes that are also of commercial value to a limited degree, the seedy Tanepeo, Coppenrath, Ambilobe and Mohtasseb lime varieties as well as the Madagascar lemon. Hybridization with a [[mandarin orange|mandarin]]-[[pomelo]] cross similar to the oranges has produced the Kirk lime. The New Caledonia and Kaghzi limes appear to have resulted from an [[F1 hybrid|F2]] Key lime self-pollination, while a spontaneous genomic duplication gave us the [[Polyploid|tetraploid]] Giant Key lime.<ref name="limes and lemons">{{cite journal |title=Phylogenetic origin of limes and lemons revealed by cytoplasmic and nuclear markers |last1=Curk |first1=Franck |last2=Ollitrault |first2=Frédérique |last3=Garcia-Lor |first3= Andres |last4=Luro |first4=François |last5=Navarro |first5=Luis |last6=Ollitrault |first6=Patrick |journal=Annals of Botany |volume=11 |issue=4 |pages=565–583 |year=2016 |doi=10.1093/aob/mcw005 |pmid=26944784 |pmc=4817432}}</ref><ref>{{citation|last1=Ali |first1=Muhammad Amjad |last2=Nawaz |first2=Muhammad Azher |chapter=Advances in Lime Breeding and Genetics |title=The Lime: Botany, Production and Uses |editor-last1=Khan |editor-first1=M. Mumtaz |editor-last2=Al-Yahyai |editor-first2=Rashid |editor-last3=Al-Said |editor-first3=Fahad |year=2017 |publisher=CAB International |pages=37–53}}</ref> The potential to produce a wider variety of lime hybrids from the Key lime due to its tendency to form [[ploidy|diploid]] gametes may reduce the disease risk presented by the limited diversity of the current commercial limes.<ref>{{cite journal|last1=Rouiss |first1=H |last2=Bakry |first2=F |last3=Froelicher |first3=Y |last4=Navarro |first4=L |last5=Aleza |first5=P |last6=Ollitrault |first6=P|title=Origin of ''C. latifolia'' and ''C. aurantiifolia'' triploid limes: the preferential disomic inheritance of doubled-diploid 'Mexican' lime is consistent with an interploid hybridization hypothesis |journal=Annals of Botany |volume=121 |issue=3 |pages=571–585 |year=2018 |doi=10.1093/aob/mcx179 |pmid=29293884 |pmc=5838810}}</ref>