Details for: PI 541075, Pyrus ×calleryana Decne., 'Autumn Blaze'

Summary Data

Taxonomy:

Pyrus ×calleryana Decne.

Cultivar:

'Autumn Blaze'

Origin:

Developed – Oregon, United States

Maintained:

National Clonal Germplasm Repository

Received by NPGS:

08 Apr 1983

Improvement Status:

Cultivar

Form Received:

Plant

Life Form:

Tree

Life Habit:

Tree

Backup Location:

National Laboratory for Genetic Resources Preservation

Availability

This accession is not available. Contact site for status.

National Clonal Germplasm Repository

Request are accepted Sept. 1st - Nov. 30th; Ships Jan.- Mar.

Images (8 total. Click on image for more.)

Core Passport Data

Taxonomy:

Pyrus ×calleryana Decne.

Cultivar:

'Autumn Blaze'

Origin:

Developed – Oregon, United States

Maintained:

National Clonal Germplasm Repository

Received by NPGS:

08 Apr 1983

Improvement Status:

Cultivar

Form Received:

Plant

Life Form:

Tree

Life Habit:

Tree

Source History

Developed

1980.
Oregon, United States
Comment: Selected in 1969 as OPR 250, plant patent No. 4591 issued in 1980.
Developer(s):

Westwood, Melvin N., USDA/ARS/NCGR-Corvallis

Donated

08 April 1983.
Oregon, United States
Comment: Received from the OSU Lewis Brown Farm to NCGR-Corvallis
Donor(s):

Westwood, Melvin N., USDA/ARS/NCGR-Corvallis

Accession Names and Identifiers

'Autumn Blaze'

Type: Cultivar name

OPR 250

Type: Developer identifier

CPYR 1439

Type: Site identifier

Group: LOCAL

Corvallis local number

ORNAMENTAL CULTIVAR

Type: Site identifier

Group: CROPTYPE

Plant Patent 4591

Type: Other or unclassified name

Group: PLNT

Accessions protected by U.S. Plant Patents

Narrative

Description: This ornamental pear was selected by M. Westwood in 1969 from several hundred seedlings of P. calleryana growing at the rootstock research nursery at the OSU Lewis-Brown Horticulture Farm, Corvallis. The seedling was from P. calleryana stock introduced to the Medford, Oregon area by F. C. Reimer. Reimer, in cooperation with F. N. Meyer, made two seed collections of this species from native trees in China. The first collection was made in 1917 and the second in 1919 at a different location. Unfortunately, Reimer did not maintain these collections separately, so the absolute origin is unknown.

Autumn Blaze is famous for its striking fall leaf coloration. It colors early and is a very brilliant purple red. The tree develops an upright pyramidal shape if trained to a dominant central leader. If the leader is headed back at planting, then the tree develops as a broad pyramid. Its fruit is nearly round, russet-green to maize yellow when ripe. The flesh is cream in color, very acid, with a heavy layer of stone cells exterior to the core area. It is also considered one of the hardiest varieties of this species. For example, the buds are hardy to minus 34 degrees while other cultivars are hardy only to minus28.

Pyrus ×calleryana Decne.

Genus:

Pyrus

Section:

Pashia

Family:

Rosaceae

Subfamily:

Amygdaloideae

Tribe:

Maleae

Subtribe:

Malinae

Nomen number:

30463

Place of publication:

Jard. fruit. 1:329, sub t. 8. 1872, pro sp.

Protologue link:

http://dx.doi.org/10.3931/e-rara-47581

Comment:

valid publication verified from original literature
for final year of publication see TL II 1:609, entry 1338. 1976

Verified:

11/24/2018 by ARS Systematic Botanists.

Other conspecific taxa

Autonyms (not in current use), synonyms and invalid designations

Autonym(s)
Pyrus ×calleryana Decne. f. calleryana
Pyrus ×calleryana Decne. var. calleryana

Heterotypic Synonym(s)
Pyrus ×calleryana Decne. f. graciliflora Rehder
Pyrus ×calleryana Decne. f. tomentella Rehder
Pyrus kawakamii Hayata

Common names

Language	Name	seq	Citation
English	Bradford pear	1	Terrell, E. E. et al. 1986. Agricultural Handbook no. 505 Note: not as hybrid
English	callery pear	1	Facciola, S. 1990. Cornucopia, a source book of edible plants Kampong Publications. Note: not as hybrid
Japanese Rōmaji	mame-nashi	2	Iwatsuki, K. et al. 1993-. Flora of Japan. Note: not as hybrid
Swedish	litet kinapäron	2	Aldén, B., S. Ryman, & M. Hjertson. 2012. Svensk Kulturväxtdatabas, SKUD (Swedish Cultivated and Utility Plants Database; online resource) Note: not as hybrid
Transcribed Chinese	dou li	2	Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition). Note: not as hybrid

Annotations

The Taxonomic Name Of The Accession When It Was Received: 31 Jul 1989, from Pyrus ×calleryana Decne. var. koehnei (C. K. Schneid.) T. T. Yu to Pyrus ×calleryana Decne.

Observations

Phenotype Data

Category	Descriptor	Description	Value	Sample Size	Study	Inventory	Availability
CYTOLOGIC	PLOIDY LEVEL	Number of sets of chromosomes.	2x - diploid		PYRUS.PLOIDY.2007	CPYR 1439 .001 PL	Not Available
DISEASE	FRUIT_SCAB	RATING OF DAMAGE CAUSED BY FRUIT SCAB	1 - NO DAMAGE		PYRUS.CORVALLIS.1988		Not Available
DISEASE	FRUIT_SCAB	RATING OF DAMAGE CAUSED BY FRUIT SCAB	1 - NO DAMAGE		PYRUS.CORVALLIS.1987		Not Available
DISEASE	LEAF_SCAB	RATING OF DAMAGE CAUSED BY LEAF SCAB	1 - NO DAMAGE		PYRUS.CORVALLIS.1987		Not Available
DISEASE	MILDEW	RATING OF DAMAGE CAUSED BY MILDEW	1 - NO DAMAGE	3	PYRUS.CORVALLIS.2003.MILDEW	CPYR 1439 .001 PL	Not Available
DISEASE	MILDEW	RATING OF DAMAGE CAUSED BY MILDEW	1 - NO DAMAGE	3	PYRUS.CORVALLIS.2002.MILDEW	CPYR 1439 .001 PL	Not Available
DISEASE	PSEUDOMONAS	RATING OF DAMAGE CAUSED BY PSEUDOMONAS	7 - (1 = NO DAMAGE, 9 = SEVERE DAMAGE)		PYRUS.CORVALLIS.1988		Not Available
DISEASE	RUST	RATING OF DAMAGE CAUSED BY RUST	1 - NO DAMAGE		PYRUS.CORVALLIS.1987		Not Available
GENSTOCK	PYRUS CORE SUBSET	A flag to indicate the accession is part of the core subset			PYRUS.CORE.2012		Not Available
INSECT	BLISTER_MITES	RATING OF DAMAGE CAUSED BY BLISTER MITES	1 - NO DAMAGE		PYRUS.CORVALLIS.1987		Not Available
INSECT	BLISTER_MITES	RATING OF DAMAGE CAUSED BY BLISTER MITES	3 - (1 = NO DAMAGE, 9 = SEVERE DAMAGE)		PYRUS.CORVALLIS.1987		Not Available
MOLECULAR	SSR marker	Motif: (TC)6A(CT)20 F: 5ATTGGAACTCTCCGTATTGTGC3 R: 5ATCAACAGTAGTGGTAGCCGGT3	87:111		PYRUS.DNA_Zurn et.al. 2019 unpublished	CPYR 1439 .001 PL	Not Available
MOLECULAR	SSR marker	Motif: (CT)17 F: 5GTTCTATCTACCAAGCCACGCT3 R: 5CGTTTGTGTGTTTTACGTGTTG3	96:126		PYRUS.DNA_Zurn et.al. 2019 unpublished	CPYR 1439 .001 PL	Not Available
MOLECULAR	SSR marker	Motif: (AG)7 F: 5TCCCGCCATTTCTCTGC3 R: 5GTTTAAACCGCTGCTGCTGAAC3	123:133		PYRUS.DNA_Zurn et.al. 2019 unpublished	CPYR 1439 .001 PL	Not Available
MOLECULAR	SSR marker	Motif: (AC)13 F: 5GCGATTAAAGATCAATAAACCCATA3 R: 5AAGCAGCTGGTTGGTGAAAT3	149:155		PYRUS.DNA_Zurn et.al. 2019 unpublished	CPYR 1439 .001 PL	Not Available
MOLECULAR	SSR marker	Motif: (CA)6TT(CT)21 F: 5GCCCAGAAGCAATAAGTAAACC3 R: 5ATTGCTCCATGCATAAAGGG3	89:111		PYRUS.DNA_Zurn et.al. 2019 unpublished	CPYR 1439 .001 PL	Not Available
MOLECULAR	SSR marker	Motif: (GA)19 F: 5CAAGGAAATCATCAAAGATTCAAG3 R: 5CAAGTGGCTTCGGATAGTTG3	122:136		PYRUS.DNA_Zurn et.al. 2019 unpublished	CPYR 1439 .001 PL	Not Available
MOLECULAR	SSR marker	Motif: (GA)21 F: 5GCCATCTGAACAGAATGTGC3 R: 5GTTTCCCTTCATTCACATTTCCAG3	149:149		PYRUS.DNA_Zurn et.al. 2019 unpublished	CPYR 1439 .001 PL	Not Available
MOLECULAR	SSR marker	Motif: (CT)25 F: 5CGGCGGAAAGCAATCACCT3 R: 5GTTTGCCAGCCCTCTATGGTTCTCAGA3	155:169		PYRUS.DNA_Zurn et.al. 2019 unpublished	CPYR 1439 .001 PL	Not Available
MOLECULAR	SSR marker	Motif: (GA)22 F: 5TTGAAGATGTTTGGCTGTGC3 R: 5TGCATGTCTGTCTCCTCCAT3	189:209		PYRUS.DNA_Zurn et.al. 2019 unpublished	CPYR 1439 .001 PL	Not Available
MOLECULAR	SSR marker	Motif: (CT)19 F: 5CCCTACACAGTTTCTCAACCC3 R: 5CGTTTTTGGAGCGTAGGAAC3	195:201		PYRUS.DNA_Zurn et.al. 2019 unpublished	CPYR 1439 .001 PL	Not Available
MOLECULAR	SSR marker	Motif: (TC)12 F: 5AATAAGCATTCAAAGCAATCCG3 R: 5TTTTTCCAAATCGAGTTTCGTT3	220:224		PYRUS.DNA_Zurn et.al. 2019 unpublished	CPYR 1439 .001 PL	Not Available
MOLECULAR	SSR marker	Motif: (GA)11 F: 5CTCCGCCGCTATAACACTTC3 R: 5GTTTACTCTGGAGGGTATGTCAAAG3	246:282		PYRUS.DNA_Zurn et.al. 2019 unpublished	CPYR 1439 .001 PL	Not Available
MOLECULAR	SSR marker	Motif: (ACG)6 F: 5CATTAATACGCTGCTGTTTCTGC3 R: 5GTTCTTACTTGAATTGGGGTAGGGATTGT3	196:196		PYRUS.DNA_Zurn et.al. 2019 unpublished	CPYR 1439 .001 PL	Not Available
MOLECULAR	SSR marker	Motif: (ACC)6 F: 5ACTCTCCGCAAAACAATGTCGTA3 R: 5GTTCTTTGTGAGAGTTTGAGGAGGAGAGC3	150:150		PYRUS.DNA_Zurn et.al. 2019 unpublished	CPYR 1439 .001 PL	Not Available
MOLECULAR	SSR marker	Motif: (CCACCG)2(CCA)4 F: 5TTCACTGCCCTTTTTACGTATGC3 R: 5GTTCTTCCCCGACAATCTGTAGAGAATCA3	182:182		PYRUS.DNA_Zurn et.al. 2019 unpublished	CPYR 1439 .001 PL	Not Available
MOLECULAR	SSR marker	Motif: (GATCAT)3 F: 5ATCCCAGCATTTCCCAAGATTTT3 R: 5CCGTCCGTGATACCTCTGTC3	304:304		PYRUS.DNA_Zurn et.al. 2019 unpublished	CPYR 1439 .001 PL	Not Available
MOLECULAR	SSR marker	Motif: (TTC)5 F: 5GGTCATCACCCACTTAAAAACCA3 R: 5GTTCTTGTGCCCTGAAGTAATTGAGATGG3	149:149		PYRUS.DNA_Zurn et.al. 2019 unpublished	CPYR 1439 .001 PL	Not Available
MOLECULAR	SSR marker	Motif: (CCA)5, (CCT)5 F: 5GCTACCACAACAAGCTCAACAG3 R: 5GTTTATGTCATCCTGCTGATGTCC3	350:350		PYRUS.DNA_Zurn et.al. 2019 unpublished	CPYR 1439 .001 PL	Not Available
MOLECULAR	SSR marker	Motif: (GTG)6 F: 5CGTTCCGATGAAGTGAAAGAG3 R: 5GTTTCCTGAAACTTGCCAATTGAAAC3	338:338		PYRUS.DNA_Zurn et.al. 2019 unpublished	CPYR 1439 .001 PL	Not Available
MOLECULAR	SSR marker	Motif: (CAGCT)5 F: 5CCCTACAGAGTCATGCATCC3 R: 5GTTTGATGCTGGAGACGAGAAA3	117:117		PYRUS.DNA_Zurn et.al. 2019 unpublished	CPYR 1439 .001 PL	Not Available
MORPHOLOGY	PEDICEL_ATTACHMENT	PEDICEL ATTACHMENT	L - LEVEL		PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	CAVITY	CAVITY	N - NONE		PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	CALYX	CALYX	D - DECIDUOUS		PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	CALYX_BASIN	CALYX BASIN	N - NONE		PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	GROUND_COLOR	GROUND COLOR	O - ORANGE		PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	OVER_COLOR	OVERCOLOR	N - NONE		PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	RUSSET	AMOUNT OF RUSSETING	9 - COMPLETELY RUSSETED		PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	RUSSET_LOCATION	LOCATION OF RUSSETING	E - EVERYWHERE		PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	LENTICELS	NUMBER OF LENTICELS	6 - (1 = FEW, 9 = MANY)		PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	LENTICEL_SIZE	SIZE OF LENTICELS	3 - (1 = SMALL, 9 = LARGE)		PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	DOTS	DOTS	O - OBSCURE		PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	FRUITCORE	CORE	M - MEDIAN		PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	CARPEL_NUMBER	NUMBER OF CARPELS	2.5		PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	GRIT	NUMBER OF STONE CELLS	6 - (1 = NO STONE CELLS, 9 = MANY STONE CELLS)		PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	GRIT_SIZE	SIZE AND LOCATION OF STONE CELLS	M - MEDIUM		PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	BLOOM_DENSITY	BLOOM DENSITY	1 - LOW		PYRUS.CORVALLIS.1988		Not Available
MORPHOLOGY	BLOOM_DENSITY	BLOOM DENSITY	3 - (1 = LOW, 9 = HIGH)		PYRUS.CORVALLIS.1987		Not Available
MORPHOLOGY	BLOOM_DENSITY	BLOOM DENSITY	9 - HIGH		PYRUS.CORVALLIS.1988		Not Available
MORPHOLOGY	TREE SHAPE	OVERALL SHAPE OF TREE SILHOUETTE	5 - WIDE ROUND		PYRUS.WIEGREFE.1992		Not Available
MORPHOLOGY	CENTRAL LEADER	DOMINANCE OR PERSISTENCE OF THE CENTRAL LEADER	2 - MODERATE		PYRUS.WIEGREFE.1992		Not Available
MORPHOLOGY	BRANCH ANGLE 1	LOWER LIMIT OF TYPICAL BRANCH ANGLE IN DEGREES	0		PYRUS.WIEGREFE.1992		Not Available
MORPHOLOGY	BRANCH ANGLE 2	UPPER LIMIT OF TYPICAL BRANCH ANGLE IN DEGREES	0		PYRUS.WIEGREFE.1992		Not Available
MORPHOLOGY	BRANCH DENSITY	DENSITY OF BRANCHING	2 - INTERMEDIATE		PYRUS.WIEGREFE.1992		Not Available
MORPHOLOGY	BRANCH STIFFNESS	PHYSICAL (N.N. VISUAL) STIFFNESS OF BRANCHES	2 - INTERMEDIATE		PYRUS.WIEGREFE.1992		Not Available
MORPHOLOGY	BARK TEXTURE	TEXTURE OF THE BARK	4 - FURROWED		PYRUS.WIEGREFE.1992		Not Available
MORPHOLOGY	THORN ADULT	PRESENCE OF THORNS AS ADULT	1 - NONE		PYRUS.WIEGREFE.1992		Not Available
MORPHOLOGY	SUMMER LEAF COLOR	SUMMER LEAF COLOR RECORDED AS HUE, NOT VALUE.	2 - MEDIUM		PYRUS.WIEGREFE.1992		Not Available
PHENOLOGY	FIRST_BLOOM	JULIAN DATE OF FIRST BLOOM	75		PYRUS.CORVALLIS.1988		Not Available
PHENOLOGY	FULL_BLOOM	JULIAN DATE OF FULL BLOOM	78		PYRUS.CORVALLIS.1987		Not Available
PHENOLOGY	FULL_BLOOM	JULIAN DATE OF FULL BLOOM	83		PYRUS.CORVALLIS.1988		Not Available
PHENOLOGY	LAST_BLOOM	JULIAN DATE OF LAST BLOOM	101		PYRUS.CORVALLIS.1988		Not Available
PHENOLOGY	LAST_BLOOM	JULIAN DATE OF LAST BLOOM	98		PYRUS.CORVALLIS.1987		Not Available