Details for: PI 541120, Pyrus communis L., 'Ayer'

Summary Data

Taxonomy:

Pyrus communis L.

Cultivar:

'Ayer'

Origin:

Developed – Kansas, United States

Maintained:

National Clonal Germplasm Repository

Received by NPGS:

21 Feb 1981

Improvement Status:

Cultivar

Form Received:

Plant

Life Form:

Tree

Life Habit:

Tree

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 (4 total. Click on image for more.)

Core Passport Data

Taxonomy:

Pyrus communis L.

Cultivar:

'Ayer'

Origin:

Developed – Kansas, United States

Maintained:

National Clonal Germplasm Repository

Received by NPGS:

21 Feb 1981

Improvement Status:

Cultivar

Form Received:

Plant

Life Form:

Tree

Life Habit:

Tree

Source History

Developed

1880.
Kansas, United States
Comment: Cultivar originated in 1880
Developer(s):

Ayer, O.H.

Donated

21 February 1981.
Oregon, United States
Comment: Received from collection at Medford, OR to NCGR-Corvallis
Donor(s):

Lombard, Porter, Oregon State University

Accession Names and Identifiers

'Ayer'

Type: Cultivar name

EUROPEAN CULTIVAR

Type: Site identifier

Group: CROPTYPE

CPYR 26

Type: Other or unclassified name

Group: LOCAL

Corvallis local number

Narrative

See plate 52 in USDA Yearbook for 1911. Originated as a chance seedling on the farm of O.H. Ayer, Sibly, Kansas, 1880. Fruit medium in size, resembling White Doyenne in form and coloration. Flesh fairly fine, buttery, moderately juicy. Mild, pleasing flavor but lacks distinctive dessert quality characteristics. Earlier than Bartlett in season. Tree moderately vigorous, reasonably productive, of fair resistance to fire blight. -- H. Hartman, Oregon Agricultural Experiment Station, 1957.

Pyrus communis L.

Genus:

Pyrus

Section:

Pyrus

Family:

Rosaceae

Subfamily:

Amygdaloideae

Tribe:

Maleae

Subtribe:

Malinae

Nomen number:

30474

Place of publication:

Sp. pl. 1:479, 2:1200. 1753

Protologue link:

https://biodiversitylibrary.org/page/358498

Comment:

probably of hybrid origin

Typification:

View in Linnean Typification Project

Verified:

07/07/2011 by ARS Systematic Botanists.

Other conspecific taxa

Pyrus communis L. subsp. caucasica (Fed.) Browicz (77 active accession[s])
Pyrus communis L. subsp. communis (39 active accession[s])
Pyrus communis L. subsp. pyraster (L.) Ehrh. (113 active accession[s])

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

Heterotypic Synonym(s)
Pyrus asiae-mediae (Popov) Maleev
Pyrus balansae Decne.
Pyrus bourgaeana Decne.
Pyrus communis L. subsp. bourgaeana (Decne.) Nyman
Pyrus communis L. var. mariana Willk.
Pyrus domestica Medik.
Pyrus elata Rubtzov
Pyrus medvedevii Rubtzov

Common names

Language	Name	note	seq	Citation
English	pear		1	Wiersema, J. H. & B. León. 1999. World economic plants: a standard reference CRC Press, Boca Raton, FL.
French	poirier		2	Rehm, S. 1994. Multilingual dictionary of agronomic plants
German	Birnbaum		2	Rehm, S. 1994. Multilingual dictionary of agronomic plants
German	Birne		2	Reichel, S. 1998. pers. comm. Note: re. German common names
German	Birnenbaum		2	Reichel, S. 1998. pers. comm. Note: re. German common names
Italian	pera		2	Hanelt, P., ed. 2001. Mansfeld's encyclopedia of agricultural and horticultural crops. Volumes 1-6
Italian	pero		2	Hanelt, P., ed. 2001. Mansfeld's encyclopedia of agricultural and horticultural crops. Volumes 1-6
Japanese Rōmaji	seiyō-nashi		2	Ohwi, J. 1965. Flora of Japan (Engl. ed.).
Portuguese	pereira		2	Rehm, S. 1994. Multilingual dictionary of agronomic plants
Spanish	pera		2	Hanelt, P., ed. 2001. Mansfeld's encyclopedia of agricultural and horticultural crops. Volumes 1-6
Spanish	peral		2	Rehm, S. 1994. Multilingual dictionary of agronomic plants
Swedish	päron		2	Aldén, B., S. Ryman, & M. Hjertson. 2012. Svensk Kulturväxtdatabas, SKUD (Swedish Cultivated and Utility Plants Database; online resource)
Transcribed Chinese	xi yang li	as Pyrus communis var. sativa	2	Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition). Note: = Pyrus communis var. sativa
Transcribed Korean	byeongbaenamu		2	Mun-Chan, B. et al. 1986. A checklist of the Korean cultivated plants. Kulturpflanze 34:122.

Annotations

The Taxonomic Name Of The Accession When It Was Received: 31 Jul 1989, from Pyrus communis L. var. pyraster L. to Pyrus communis L.

Observations

Phenotype Data

Category	Descriptor	Description	Value	Study	Inventory	Availability
CYTOLOGIC	PLOIDY LEVEL	Number of sets of chromosomes.	2x - diploid	PYRUS.PLOIDY.2012	CPYR 26 .001 PL	Not Available
DISEASE	FRUIT_SCAB	RATING OF DAMAGE CAUSED BY FRUIT SCAB	3 - (1 = NO DAMAGE, 9 = SEVERE DAMAGE)	PYRUS.CORVALLIS.1988		Not Available
DISEASE	PSEUDOMONAS	RATING OF DAMAGE CAUSED BY PSEUDOMONAS	9 - SEVERE DAMAGE	PYRUS.CORVALLIS.1988		Not Available
DISEASE	RUST	RATING OF DAMAGE CAUSED BY RUST	1 - NO DAMAGE	PYRUS.CORVALLIS.1986		Not Available
INSECT	BLISTER_MITES	RATING OF DAMAGE CAUSED BY BLISTER MITES	7 - (1 = NO DAMAGE, 9 = SEVERE DAMAGE)	PYRUS.CORVALLIS.1986		Not Available
MOLECULAR	SSR marker	Motif: (GA)22 F: 5TTGAAGATGTTTGGCTGTGC3 R: 5TGCATGTCTGTCTCCTCCAT3	181:205	PYRUS.DNA_Zurn et.al. 2019 unpublished	CPYR 26 .001 PL	Not Available
MOLECULAR	SSR marker	Motif: (GA)11 F: 5CTCCGCCGCTATAACACTTC3 R: 5GTTTACTCTGGAGGGTATGTCAAAG3	246:288	PYRUS.DNA_Zurn et.al. 2019 unpublished	CPYR 26 .001 PL	Not Available
MOLECULAR	SSR marker	Motif: (ACG)6 F: 5CATTAATACGCTGCTGTTTCTGC3 R: 5GTTCTTACTTGAATTGGGGTAGGGATTGT3	196:196	PYRUS.DNA_Zurn et.al. 2019 unpublished	CPYR 26 .001 PL	Not Available
MOLECULAR	SSR marker	Motif: (ACC)6 F: 5ACTCTCCGCAAAACAATGTCGTA3 R: 5GTTCTTTGTGAGAGTTTGAGGAGGAGAGC3	144:150	PYRUS.DNA_Zurn et.al. 2019 unpublished	CPYR 26 .001 PL	Not Available
MOLECULAR	SSR marker	Motif: (CCACCG)2(CCA)4 F: 5TTCACTGCCCTTTTTACGTATGC3 R: 5GTTCTTCCCCGACAATCTGTAGAGAATCA3	170:170	PYRUS.DNA_Zurn et.al. 2019 unpublished	CPYR 26 .001 PL	Not Available
MOLECULAR	SSR marker	Motif: (GATCAT)3 F: 5ATCCCAGCATTTCCCAAGATTTT3 R: 5CCGTCCGTGATACCTCTGTC3	298:298	PYRUS.DNA_Zurn et.al. 2019 unpublished	CPYR 26 .001 PL	Not Available
MOLECULAR	SSR marker	Motif: (TTC)5 F: 5GGTCATCACCCACTTAAAAACCA3 R: 5GTTCTTGTGCCCTGAAGTAATTGAGATGG3	143:156	PYRUS.DNA_Zurn et.al. 2019 unpublished	CPYR 26 .001 PL	Not Available
MOLECULAR	SSR marker	Motif: (CCA)5, (CCT)5 F: 5GCTACCACAACAAGCTCAACAG3 R: 5GTTTATGTCATCCTGCTGATGTCC3	363:379	PYRUS.DNA_Zurn et.al. 2019 unpublished	CPYR 26 .001 PL	Not Available
MOLECULAR	SSR marker	Motif: (GTG)6 F: 5CGTTCCGATGAAGTGAAAGAG3 R: 5GTTTCCTGAAACTTGCCAATTGAAAC3	329:329	PYRUS.DNA_Zurn et.al. 2019 unpublished	CPYR 26 .001 PL	Not Available
MOLECULAR	SSR marker	Motif: (CAGCT)5 F: 5CCCTACAGAGTCATGCATCC3 R: 5GTTTGATGCTGGAGACGAGAAA3	107:122	PYRUS.DNA_Zurn et.al. 2019 unpublished	CPYR 26 .001 PL	Not Available
MORPHOLOGY	PEDICEL_ATTACHMENT	PEDICEL ATTACHMENT	U - SUNKEN	PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	CAVITY	CAVITY	AD - ACUTE DEEP	PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	CALYX	CALYX	D - DECIDUOUS	PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	CALYX_BASIN	CALYX BASIN	OM - OBTUSE MEDIUM	PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	GROUND_COLOR	GROUND COLOR	YG - YELLOW GREEN	PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	OVER_COLOR	OVERCOLOR	BL - BLUSH	PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	OVERCOLOR_AMT	PERCENT OF FRUIT SURFACE WITH OVERCOLOR	15	PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	RUSSET	AMOUNT OF RUSSETING	3 - (1 = NONE, 9 = COMPLETELY RUSSETED)	PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	RUSSET_LOCATION	LOCATION OF RUSSETING	C - CALYX END	PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	LENTICELS	NUMBER OF LENTICELS	5 - (1 = FEW, 9 = MANY)	PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	LENTICEL_SIZE	SIZE OF LENTICELS	4 - (1 = SMALL, 9 = LARGE)	PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	DOTS	DOTS	O - OBSCURE	PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	FLESH_COLOR	FLESH COLOR	C - CREAM	PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	FLESH_TEXTURE	FLESH TEXTURE	6 - (1 = FINE, 9 = COARSE)	PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	TEXTURE_TYPE	FLESH TEXTURE TYPE	C - CRISP	PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	TEXTURE_TYPE	FLESH TEXTURE TYPE	D - DRY	PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	FRUITCORE	CORE	D - DISTANT	PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	CARPEL_NUMBER	NUMBER OF CARPELS	5	PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	GRIT	NUMBER OF STONE CELLS	3 - (1 = NO STONE CELLS, 9 = MANY STONE CELLS)	PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	GRIT_SIZE	SIZE AND LOCATION OF STONE CELLS	S - SMALL	PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	OXIDATION	OXIDATION OF CUT MEASURED AFTER 5 MINUTES	1 - NONE	PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	FLAVOR	FLAVOR OF FRUIT FLESH	B - BLAND	PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	QUALITY	QUALITY OF FRUIT FLESH A COMBINATION OF FLAVOR, TEXTURE AND AROMA	4 - (1 = POOR, 9 = EXCELLENT)	PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	BLOOM_DENSITY	BLOOM DENSITY	3 - (1 = LOW, 9 = HIGH)	PYRUS.CORVALLIS.1988		Not Available
MORPHOLOGY	BLOOM_DENSITY	BLOOM DENSITY	4 - (1 = LOW, 9 = HIGH)	PYRUS.CORVALLIS.1987		Not Available
MORPHOLOGY	BLOOM_DENSITY	BLOOM DENSITY	5 - (1 = LOW, 9 = HIGH)	PYRUS.CORVALLIS.1987		Not Available
MORPHOLOGY	BLOOM_DENSITY	BLOOM DENSITY	9 - HIGH	PYRUS.CORVALLIS.1988		Not Available
PHENOLOGY	FIRST_BLOOM	JULIAN DATE OF FIRST BLOOM	83	PYRUS.CORVALLIS.1986		Not Available
PHENOLOGY	FIRST_BLOOM	JULIAN DATE OF FIRST BLOOM	89	PYRUS.CORVALLIS.1987		Not Available
PHENOLOGY	FIRST_BLOOM	JULIAN DATE OF FIRST BLOOM	89	PYRUS.CORVALLIS.1990		Not Available
PHENOLOGY	FIRST_BLOOM	JULIAN DATE OF FIRST BLOOM	90	PYRUS.CORVALLIS.1987		Not Available
PHENOLOGY	FIRST_BLOOM	JULIAN DATE OF FIRST BLOOM	94	PYRUS.CORVALLIS.1988		Not Available
PHENOLOGY	FIRST_BLOOM	JULIAN DATE OF FIRST BLOOM	96	PYRUS.CORVALLIS.1988		Not Available
PHENOLOGY	FIRST_BLOOM	JULIAN DATE OF FIRST BLOOM	97	PYRUS.CORVALLIS.1989		Not Available
PHENOLOGY	FULL_BLOOM	JULIAN DATE OF FULL BLOOM	101	PYRUS.CORVALLIS.1988		Not Available
PHENOLOGY	FULL_BLOOM	JULIAN DATE OF FULL BLOOM	104	PYRUS.CORVALLIS.1989		Not Available
PHENOLOGY	FULL_BLOOM	JULIAN DATE OF FULL BLOOM	91	PYRUS.CORVALLIS.1987		Not Available
PHENOLOGY	FULL_BLOOM	JULIAN DATE OF FULL BLOOM	92	PYRUS.CORVALLIS.1987		Not Available
PHENOLOGY	FULL_BLOOM	JULIAN DATE OF FULL BLOOM	96	PYRUS.CORVALLIS.1990		Not Available
PHENOLOGY	LAST_BLOOM	JULIAN DATE OF LAST BLOOM	100	PYRUS.CORVALLIS.1990		Not Available
PHENOLOGY	LAST_BLOOM	JULIAN DATE OF LAST BLOOM	106	PYRUS.CORVALLIS.1988		Not Available
PHENOLOGY	LAST_BLOOM	JULIAN DATE OF LAST BLOOM	106	PYRUS.CORVALLIS.1987		Not Available
PHENOLOGY	LAST_BLOOM	JULIAN DATE OF LAST BLOOM	107	PYRUS.CORVALLIS.1987		Not Available
PHENOLOGY	LAST_BLOOM	JULIAN DATE OF LAST BLOOM	108	PYRUS.CORVALLIS.1989		Not Available
PHENOLOGY	FULL_RIPE	JULIAN DATE OF FULL RIPE FRUIT	211	PYRUS.CORVALLIS.1987		Not Available
PHENOLOGY	FULL_RIPE	JULIAN DATE OF FULL RIPE FRUIT	213	PYRUS.CORVALLIS.1990		Not Available
PRODUCTION	PRECOCITY	NUMBER OF YEARS FROM PLANTING TO FIRST FRUIT	2	PYRUS.CORVALLIS.1986		Not Available