Details for: PI 541294, Pyrus communis L., P-12

Summary Data

Taxonomy:

Pyrus communis L.

Top Name:

P-12

Origin:

Developed – Oregon, United States

Maintained:

National Clonal Germplasm Repository

Received by NPGS:

21 Feb 1981

Improvement Status:

Breeding material

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 (1 total. Click on image for more.)

Core Passport Data

Taxonomy:

Pyrus communis L.

Top Name:

P-12

Origin:

Developed – Oregon, United States

Maintained:

National Clonal Germplasm Repository

Received by NPGS:

21 Feb 1981

Improvement Status:

Breeding material

Form Received:

Plant

Life Form:

Tree

Life Habit:

Tree

Source History

Developed

1926.
Oregon, United States
Comment: Selection introduced in 1926
Developer(s):

Reimer, Frederic (Frank) C., Oregon State University

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

P-12

Type: Unverified name

Rootstock Pear

Type: Local name

P-12 blight resistant rootstock

Type: Developer identifier

Reimer, Frederic (Frank) C. Oregon State University

SPECIES

Type: Site identifier

Group: CROPTYPE

CPYR 715

Type: Other or unclassified name

Group: LOCAL

Corvallis local number

Narrative

Fire blight resistant rootstock. The Southern Oregon Experiment Station made a concerted attempt to find fire blight resistant root and framework stocks from 1923 and 1931. Over 10,000 French P. communis seedlings were grown and repeatedly inoculated with the blight organism, and after 5-6 years only ten trees survived. These seedlings were capable of transmitting blight resistance to a high percentage of their progeny, particularly when cross pollinated with other blight resistant pears. The best of the resistant seedlings were W-1, W-2, P-18, P-30, P-61, P-70 and P-87 (F. Reimer. 1950. Oregon Agricultural Experiment Station Bulletin 485). - H. Hartman, 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

Observations

Phenotype Data

Category	Descriptor	Description	Value	Study	Inventory	Availability
CYTOLOGIC	PLOIDY LEVEL	Number of sets of chromosomes.	2x - diploid	PYRUS.PLOIDY.2013	CPYR 715 .002 PL	Not Available
DISEASE	FRUIT_SCAB	RATING OF DAMAGE CAUSED BY FRUIT SCAB	1 - NO DAMAGE	PYRUS.CORVALLIS.1987		Not Available
DISEASE	FRUIT_SCAB	RATING OF DAMAGE CAUSED BY FRUIT SCAB	1 - NO DAMAGE	PYRUS.CORVALLIS.2005.FRUITSCAB	CPYR 715 .002 PL	Not Available
DISEASE	LEAF_SCAB	RATING OF DAMAGE CAUSED BY LEAF SCAB	1 - NO DAMAGE	PYRUS.CORVALLIS.1987		Not Available
DISEASE	PSEUDOMONAS	RATING OF DAMAGE CAUSED BY PSEUDOMONAS	2 - (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
GROWTH	TREE SYMMETRY	SYMMETRY OF TREE GROWTH	2 - INTERMEDIATE	PYRUS.WIEGREFE.1992		Not Available
INSECT	BLISTER_MITES	RATING OF DAMAGE CAUSED BY BLISTER MITES	1 - NO DAMAGE	PYRUS.CORVALLIS.1987		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	P - PERSISTANT	PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	CALYX_BASIN	CALYX BASIN	N - NONE	PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	GROUND_COLOR	GROUND COLOR	G - GREEN	PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	OVER_COLOR	OVERCOLOR	N - NONE	PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	RUSSET	AMOUNT OF RUSSETING	5 - (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	RUSSET_LOCATION	LOCATION OF RUSSETING	P - PEDICEL END	PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	LENTICELS	NUMBER OF LENTICELS	5 - (1 = FEW, 9 = MANY)	PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	LENTICELS	NUMBER OF LENTICELS	5 - (1 = FEW, 9 = MANY)	PYRUS.WIEGREFE.1992		Not Available
MORPHOLOGY	LENTICEL_SIZE	SIZE OF LENTICELS	2 - (1 = SMALL, 9 = LARGE)	PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	DOTS	DOTS	O - OBSCURE	PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	FLESH_COLOR	FLESH COLOR	W - WHITE	PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	FLESH_TEXTURE	FLESH TEXTURE	5 - (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	J - JUICY	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	5 - (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	CORE_BREAKDOWN	DEGREE OF CORE BREAKDOWN, DETERMINED ON TREE RIPENED FRUIT	1 - NONE	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	T - ASTRINGENT	PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	QUALITY	QUALITY OF FRUIT FLESH A COMBINATION OF FLAVOR, TEXTURE AND AROMA	2 - (1 = POOR, 9 = EXCELLENT)	PYRUS.CORVALLIS.STD		Not Available
MORPHOLOGY	BLOOM_DENSITY	BLOOM DENSITY	3 - (1 = LOW, 9 = HIGH)	PYRUS.CORVALLIS.1987		Not Available
MORPHOLOGY	TREE SHAPE	OVERALL SHAPE OF TREE SILHOUETTE	3 - OVAL 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	1 - OPEN	PYRUS.WIEGREFE.1992		Not Available
MORPHOLOGY	BRANCH STIFFNESS	PHYSICAL (N.N. VISUAL) STIFFNESS OF BRANCHES	3 - VERY STIFF	PYRUS.WIEGREFE.1992		Not Available
MORPHOLOGY	BARK TEXTURE	TEXTURE OF THE BARK	2 - SMOOTH	PYRUS.WIEGREFE.1992		Not Available
MORPHOLOGY	THORN ADULT	PRESENCE OF THORNS AS ADULT	1 - NONE	PYRUS.WIEGREFE.1992		Not Available
PHENOLOGY	FIRST_BLOOM	JULIAN DATE OF FIRST BLOOM	101	PYRUS.CORVALLIS.1988		Not Available
PHENOLOGY	FIRST_BLOOM	JULIAN DATE OF FIRST BLOOM	104	PYRUS.CORVALLIS.1989		Not Available
PHENOLOGY	FIRST_BLOOM	JULIAN DATE OF FIRST BLOOM	96	PYRUS.CORVALLIS.1987		Not Available
PHENOLOGY	FIRST_BLOOM	JULIAN DATE OF FIRST BLOOM	98	PYRUS.CORVALLIS.1990		Not Available
PHENOLOGY	FULL_BLOOM	JULIAN DATE OF FULL BLOOM	103	PYRUS.CORVALLIS.1990		Not Available
PHENOLOGY	FULL_BLOOM	JULIAN DATE OF FULL BLOOM	104	PYRUS.CORVALLIS.1987		Not Available
PHENOLOGY	FULL_BLOOM	JULIAN DATE OF FULL BLOOM	108	PYRUS.CORVALLIS.1988		Not Available
PHENOLOGY	FULL_BLOOM	JULIAN DATE OF FULL BLOOM	109	PYRUS.CORVALLIS.1989		Not Available
PHENOLOGY	LAST_BLOOM	JULIAN DATE OF LAST BLOOM	115	PYRUS.CORVALLIS.1990		Not Available
PHENOLOGY	LAST_BLOOM	JULIAN DATE OF LAST BLOOM	119	PYRUS.CORVALLIS.1988		Not Available
PHENOLOGY	LAST_BLOOM	JULIAN DATE OF LAST BLOOM	119	PYRUS.CORVALLIS.1989		Not Available
PHENOLOGY	LAST_BLOOM	JULIAN DATE OF LAST BLOOM	120	PYRUS.CORVALLIS.1987		Not Available
PHENOLOGY	FULL_RIPE	JULIAN DATE OF FULL RIPE FRUIT	276	PYRUS.CORVALLIS.1990		Not Available