| 词条 | Ulmus americana 'L'Assomption' |
| 释义 |
| name = Ulmus americana 'L'Assomption' | species = Ulmus americana | cultivar = 'L'Assomption' | origin = L'Assomption Experimental Station, Quebec, Canada }} The American Elm cultivar Ulmus americana 'L'Assomption' was selected from seedlings grown from X-irradiated seed at the eponymous experimental station in Quebec before 1965.[1][2] Description'L'Assomption' is a very slow-growing tree. Pests and diseasesThe tree is highly resistant to Dutch elm disease [1]. No other specific information is available, but the species as a whole is highly susceptible to Elm Yellows; it is also moderately preferred for feeding and reproduction by the adult Elm Leaf Beetle Xanthogaleruca luteola [3], and highly preferred for feeding by the Japanese Beetle Popillia japonica [4] [5] in the United States. U. americana is also the most susceptible of all the elms to verticillium wilt.[6] [7]CultivationThe tree is not known to be in cultivation beyond Canada. AccessionsNorth America
References1. ^1 Ouellet, C-E., & Pomerleau, R., (1965). Can. J. Bot. 43:85-96, 1965. {{Elm species, varieties, hybrids, hybrid cultivars and species cultivars |state=collapsed}}{{DEFAULTSORT:Ulmus Americana 'L'assomption'}}{{Ulmaceae-stub}}2. ^{{cite journal |last1=Santamour |first1=Frank S. |last2=Bentz |first2= Susan E. |date=May 1995 |title=Updated Checklist of Elm (Ulmus) Cultivars for use in North America|url=http://joa.isa-arbor.com/request.asp?JournalID=1&ArticleID=2673&Type=2|journal=Journal of Arboriculture |volume=21 |number=3|pages=122–131 |access-date=20 June 2016}} 3. ^{{cite journal | last=Miller | first=Fredric | last2=Ware | first2=George | title=Resistance of Temperate Chinese Elms (Ulmus spp.) to Feeding by the Adult Elm Leaf Beetle (Coleoptera: Chrysomelidae) | journal=Journal of Economic Entomology | publisher=Oxford University Press (OUP) | volume=94 | issue=1 | date=2001-02-01 | issn=0022-0493 | doi=10.1603/0022-0493-94.1.162 | pages=162–166 | ref=harv}} 4. ^{{cite journal | last=Miller | first=Fredric | last2=Ware | first2=George | last3=Jackson | first3=Jennifer | title=Preference of Temperate Chinese Elms ( Ulmus spp.) for the Adult Japanese Beetle (Coleoptera: Scarabaeidae) | journal=Journal of Economic Entomology | publisher=Oxford University Press (OUP) | volume=94 | issue=2 | date=2001-04-01 | issn=0022-0493 | doi=10.1603/0022-0493-94.2.445 | pages=445–448}} 5. ^{{Cite web|url=http://www.sunshinenursery.com/survey.htm|access-date=17 July 2017|archiveurl=https://web.archive.org/web/20110719132152/http://www.sunshinenursery.com/survey.htm|title=Elm Leaf Beetle Survey|archive-date=2011-07-19}} 6. ^Pegg, G. F. & Brady, B. L. (2002). Verticillium Wilts. CABI Publishing. {{ISBN|0-85199-529-2}} 7. ^{{Cite web|url=http://www.sunshinenursery.com/survey.htm|access-date=17 July 2017|archiveurl=https://web.archive.org/web/20110719132152/http://www.sunshinenursery.com/survey.htm|title=Elm Leaf Beetle Survey|archive-date=2011-07-19}} 3 : American elm cultivar|Ulmus articles missing images|Ulmus |
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