The American Elm cultivar Ulmus americana 'Jackson' was cloned c.1990 from an elm selected at Wichita, Kansas, which had reputedly shewn no signs of Dutch elm disease damage at over 50 years of age.[1]
Description
The elm is "oak-like" in form, with wide-spreading branches, growing to about 60 ft tall and wide.[2]
Pests and diseases
The resistance of 'Jackson' to Dutch Elm Disease had not as of 1995 been confirmed by artificial inoculation.[1] The species as a whole is highly susceptible to Dutch Elm Disease and 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]
Cultivation
As a nursery cultivar, 'Jackson' was last listed in the Fall 1994 - Spring 1995 catalogue of the now-defunct Arborvillage Farm Nurseries, Holt, Missouri. A specimen, planted in 1999, stands (2022) in Dawes Arboretum, Newark, Ohio, where it is said to be fast-growing. A specimen obtained from Arborvillage Farm Nurseries in 2000 stood in the Botanic Garden of Mount Holyoke College, South Hadley, Massachusetts, till destroyed in a storm in 2011.[8] The tree is not known to have been introduced to Europe or Australasia.
Accessions
North America
- Dawes Arboretum [1], Newark, Ohio, US. 1 tree (2022), accession no.: D1999-0081.001
References
- ^ a b Santamour, Frank S.; Bentz, Susan E. (May 1995). "Updated Checklist of Elm (Ulmus) Cultivars for use in North America". Journal of Arboriculture. 21 (3): 122–131. Retrieved 20 June 2016.
- ^ Ulmus americana 'Jackson', The Dawes Arboretum, Arboretum Explorer (Newark, Ohio) dawesarb.arboretumexplorer.org
- ^ Miller, Fredric; Ware, George (2001-02-01). "Resistance of Temperate Chinese Elms (Ulmus spp.) to Feeding by the Adult Elm Leaf Beetle (Coleoptera: Chrysomelidae)". Journal of Economic Entomology. Oxford University Press (OUP). 94 (1): 162–166. doi:10.1603/0022-0493-94.1.162. ISSN 0022-0493. PMID 11233108. S2CID 42980569.
- ^ Miller, Fredric; Ware, George; Jackson, Jennifer (2001-04-01). "Preference of Temperate Chinese Elms ( Ulmus spp.) for the Adult Japanese Beetle (Coleoptera: Scarabaeidae)". Journal of Economic Entomology. Oxford University Press (OUP). 94 (2): 445–448. doi:10.1603/0022-0493-94.2.445. ISSN 0022-0493. PMID 11332837. S2CID 7520439.
- ^ "Elm Leaf Beetle Survey". Archived from the original on 2011-07-19. Retrieved 17 July 2017.
- ^ Pegg, G. F. & Brady, B. L. (2002). Verticillium Wilts. CABI Publishing. ISBN 0-85199-529-2
- ^ "Elm Leaf Beetle Survey". Archived from the original on 2011-07-19. Retrieved 17 July 2017.
- ^ U. americana 'Jackson', Mount Holyoke College, Acc. no. 20000409*1 mtholyoke.edu
This page was last edited on 14 August 2023, at 17:30