Details for: PI 638018, Pyrus betulifolia Bunge, Du Li


Summary Data
Taxonomy:
Pyrus betulifolia Bunge
Top Name:
Du Li
Origin:
Collected – Shaanxi Sheng, China
Received by NPGS:
27 Mar 2004
Improvement Status:
Cultivated material
Form Received:
Seed
Availability
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Core Passport Data
Taxonomy:
Pyrus betulifolia Bunge
Top Name:
Du Li
Origin:
Collected – Shaanxi Sheng, China
Received by NPGS:
27 Mar 2004
Improvement Status:
Cultivated material
Form Received:
Seed
Source History
Collected
February 2004.
Shaanxi Sheng, China
Locality: From the mountains of northwest Shaanxi in the wild pear forests of Huang Ling.
Coordinates: 35.5833, 109.2500 (Map it)
Elevation: 0m.
Georeference protocol: Center of 2nd Order Admin Level
Habitat: Wild Habitat

Collector(s):
Donated
27 March 2004.
Oregon, United States

Donor(s):
Accession Names and Identifiers
Du Li
Type: Local name
Du Li equals Du Pear

CPYR 2828
Type: Site identifier
Group: LOCAL
Corvallis local number

SPECIES GROUP 3
Type: Site identifier
Group: CROPTYPE

Narrative
Collected in the wild pear forests of Huang Ling in Shaanxi Province, China. John Wells traveled to Shaanxi Province in February, 2004 and was given this seed by Mr. Xu Pu Gang at Xia-Ja Gou Village in Yangling County, the grower at Northwest Sci-Tech University of Agriculture and Forestry, Yangling Demonstration Farm. This is a cold-hardy form of P. betulifolia, from the northern limit of the natural range of this species. It is used as a rootstock for Asian pears and European pears in this part of China. Mr. Xu purchases the whole fruit with stem, and cleans and dries the seed in October, November and December. In January, approximately 50-60 days before soil temperatures increase, these dried seeds are placed in sand stratification. In early March the seeds are planted at the density of 15 x 30 cm, at the rate of two kilograms of seed per one Mu (1/6 acre). As many as 20,000 seedling/Mu are produced but only the best, about 10,000/Mu are budded in September. It is said to produce a dwarf tree that is drought and waterlog resistant, and is of much interest to the pear industry of the pacific northwest United States as a potential dwarfing rootstock for cultivated pears. -- information from John Wells, 2 March, 2004.

This seedlot was collected from the same general region as PI 541007, received in 1989.

Pyrus betulifolia Bunge
Genus:
Pyrus
Section:
Pashia
Family:
Rosaceae
Subfamily:
Amygdaloideae
Tribe:
Maleae
Subtribe:
Malinae
Nomen number:

30458
Place of publication:

Enum. pl. China bor. 27. 1833 (Mém. Acad. Imp. Sci. St.-Pétersbourg Divers Savans 2:101. 1835) "betulaefolia"
Comment:
  • spelling corrected in accordance with Shenzhen ICN Art. 60.10 and Rec. 60G
  • valid publication verified from original literature
Verified:
07/18/2011 by ARS Systematic Botanists.
Other conspecific taxa
Autonyms (not in current use), synonyms and invalid designations
Common names
LanguageNameAlternate namenoteseqCitation
Englishbirch-leaf pear  1Erhardt, W. et al. 2000. Zander: Handwörterbuch der Pflanzennamen, 16. Auflage
Germanbirkenblättriger Flügelstorax  2Erhardt, W. et al. 2000. Zander: Handwörterbuch der Pflanzennamen, 16. Auflage
Transcribed Chinesedu li  2Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition).
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Pedigree
Description:
Collected in the wild from Shaanxi Province, China.