Editing Meyer lemon (section)

== Improved Meyer ==
By the mid-1940s, the Meyer lemon had grown widely in [[California]]. However, at that time, it was discovered that most of the Meyer lemon trees being cloned were symptomless carriers of the [[Citrus tristeza virus]], which had killed millions of citrus trees all over the world and rendered other millions useless for production.<ref>{{cite journal |last1=Lee |first1=Richard F. |title=Chapter Five – Control of Virus Diseases of Citrus |journal=Advances in Virus Research |date=2015 |volume=92 |pages=143–173 |doi=10.1016/bs.aivir.2014.10.002|pmid=25591879 }}</ref> After this finding, most of the Meyer lemon trees in the United States were destroyed to save other citrus trees.

A virus-free selection was found in the 1950s<ref>{{cite web|url=http://www.fourwindsgrowers.com/solver/meyer.html|title=Four Winds Growers: Meyer Lemon Origins|archive-url=https://web.archive.org/web/20101005122406/http://fourwindsgrowers.com/solver/meyer.html|archive-date=5 Oct 2010|url-status=dead|website=FourWindsGrowers.com}}</ref> and was certified and released in 1975 by the [[University of California]] as the 'Improved Meyer lemon' – ''Citrus'' × ''meyeri'' 'Improved'.<ref>{{cite web| first= Sophia |last= Markoulakis | title= Meyer Lemon Sweet Enough To Squeeze| page= 6| url=http://ceamador.ucdavis.edu/newsletterfiles/Master_Gardener_News6935.pdf | publisher= University of California Cooperative Extension | work= Master Gardener News – Amador County | date=May 2005 |archive-url= https://web.archive.org/web/20060307052405/http://ceamador.ucdavis.edu/newsletterfiles/Master_Gardener_News6935.pdf | archive-date= 7 March 2006}}</ref><ref>{{cite book |first=Walter |last=Reuther |author2=Leon Dexter Batchelor |author3=E. Clair Calavan |author4=Herbert John Webber |author5=Glenn E. Carman |author6=Robert G Platt  |title= Citrus Industry: Crop Protection |publisher= [[University of California]] |year= 1989 |isbn= 978-0931876240 |page=195 |url=https://books.google.com/books?id=Bzv8n96-A10C&pg=PA195 }}</ref>