PI 541369

Pyrus communis L.



Developed from: Oregon United States
Maintained by: Natl. Germplasm Repository - Corvallis
NPGS received: 08-Apr-1983
PI assigned: 1990
Inventory volume: 199
Backup location:
Life form: Tree
Pedigree: Old Home x Farmingdale seedling selection
Improvement status: Breeding material
Reproductive uniformity: Population
Form received: Plant

Accession names and identifiers

OHxF 51
Type: Developer identifier
Cooperator: Brooks, Lyle A. Daybreak Nursery
Rootstock Pear
Type: Local name
EUROPEAN CULTIVAR
Type: Site identifier
Group: CROPTYPE
CPYR 709
Type: Other or unclassified name
Group: LOCAL
Comment: Corvallis local number

Web Availability Note

Dormant scion orders accepted 1 September to 1 February. Please contact curator for other germplasm forms.

Narrative

OHxF 51 (PI 541369). -A dwarfing, disease resistant rootstock clone. Less dwarfing than EM Quince A. Only moderately winter hardy. The OHxF Series (Brooks Selections) originated near Forest Grove, Oregon, by Lyle A. Brooks from seed obtained at Agriculture Canada Research Station, Surnmerland, B.C. Old Home x Farmingdale. From several thousand seedlings, Brooks, Melvin N. Westwood, and Porter Lombard selected and evaluated in the orchard >500 candidates. Thirteen have been introduced commercially; all are resistant to fire blight, pear decline, and woolly pear aphids; they produce no or few suckers; propagation (with difficulty) is by hardwood cuttings. The Brooks Selections are compatible with Pyrus communis varieties and appear to be compatible with Asian pear varieties. - Brooks and Olmo Register of Fruit and Nut Varieties

Annotations

ActionDateByOld NameNew Name
RECEIVED 31 Jul 1989 Pyrus communis var. pyrasterPyrus communis

Source History

Pedigree

Old Home x Farmingdale seedling selection

Pathogen Test Information

Test Material Tested Result Needed Started Completed Comments
Bioassay
P. communis selection B-13 CPYR 709 .001 PL NEGATIVE
P. communis 'Nouveau Poiteau' NEGATIVE
P. communis 'Passe Crassane' NEGATIVE
Pyronia veitchii NEGATIVE
Virginia Crab NEGATIVE

Observations

Click link below to see detailed observation data:
Detailed Accession Observation Page

Characterization and Evaluation Data:
Category CYTOLOGIC DISEASE GENSTOCK GROWTH INSECT MORPHOLOGY PHENOLOGY PRODUCTION
Descriptor PLOIDY LEVEL FRUIT_SCAB LEAF_SCAB MILDEW PSEUDOMONAS RUST PYRUS CORE SUBSET TREE SYMMETRY BLISTER_MITES BARK TEXTURE BLOOM_DENSITY BRANCH ANGLE 1 BRANCH ANGLE 2 BRANCH DENSITY BRANCH STIFFNESS CALYX CALYX_BASIN CARPEL_NUMBER CAVITY CENTRAL LEADER CORE_BREAKDOWN FLAVOR FLESH_COLOR FLESH_TEXTURE FRUITCORE GRIT GROUND_COLOR LENTICEL_SIZE LENTICELS OVER_COLOR OVERCOLOR_AMT OXIDATION PEDICEL_ATTACHMENT QUALITY RUSSET RUSSET_LOCATION TEXTURE_TYPE THORN ADULT TREE SHAPE FIRST_BLOOM FULL_BLOOM FULL_RIPE LAST_BLOOM YIELD
Value 2x - diploid 1 - NO DAMAGE 5 - (1 = NO DAMAGE, 9 = SEVERE DAMAGE) 3 - (1 = NO DAMAGE, 9 = SEVERE DAMAGE) 6 - (1 = NO DAMAGE, 9 = SEVERE DAMAGE) 4 - (1 = NO DAMAGE, 9 = SEVERE DAMAGE) 1 - NO DAMAGE 1 - NO DAMAGE 1 - NO DAMAGE 1 - NO DAMAGE 1 - NO DAMAGE 3 - (1 = NO DAMAGE, 9 = SEVERE DAMAGE) 3 - SYMMETRIC 1 - NO DAMAGE 3 - (1 = NO DAMAGE, 9 = SEVERE DAMAGE) 2 - SMOOTH 1 - LOW 5 - (1 = LOW, 9 = HIGH) 9 - HIGH 0 0 1 - OPEN 2 - INTERMEDIATE P - PERSISTANT OS - OBTUSE SHALLOW 5 OS - OBTUSE SHALLOW 3 - STRONG 1 - NONE A - ACID S - SWEET G - GREEN 6 - (1 = FINE, 9 = COARSE) D - DISTANT 2 - (1 = NO STONE CELLS, 9 = MANY STONE CELLS) YG - YELLOW GREEN 6 - (1 = SMALL, 9 = LARGE) 5 - (1 = FEW, 9 = MANY) BL - BLUSH 15 1 - NONE U - SUNKEN 4 - (1 = POOR, 9 = EXCELLENT) 2 - (1 = NONE, 9 = COMPLETELY RUSSETED) C - CALYX END C - CRISP J - JUICY 1 - NONE 3 - OVAL ROUND 87 92 94 96 99 91 96 102 106 95 254 111 120 113 117 106 2 - MEDIUM
Study/Environment PYRUS.PLOIDY.2007 PYRUS.CORVALLIS.1987 PYRUS.CORVALLIS.1994.FRUITSCAB PYRUS.CORVALLIS.2001.FRUITSCAB PYRUS.CORVALLIS.2002.FRUITSCAB PYRUS.CORVALLIS.2003.FRUITSCAB PYRUS.CORVALLIS.1987 PYRUS.CORVALLIS.2002.MILDEW PYRUS.CORVALLIS.2003.MILDEW PYRUS.CORVALLIS.1988 PYRUS.CORVALLIS.1987 PYRUS.CORVALLIS.1987 PYRUS.CORE.2012 PYRUS.WIEGREFE.1992 PYRUS.CORVALLIS.1987 PYRUS.CORVALLIS.1987 PYRUS.WIEGREFE.1992 PYRUS.CORVALLIS.1987 PYRUS.CORVALLIS.1987 PYRUS.CORVALLIS.1988 PYRUS.WIEGREFE.1992 PYRUS.WIEGREFE.1992 PYRUS.WIEGREFE.1992 PYRUS.WIEGREFE.1992 PYRUS.CORVALLIS.STD PYRUS.CORVALLIS.STD PYRUS.CORVALLIS.STD PYRUS.CORVALLIS.STD PYRUS.WIEGREFE.1992 PYRUS.CORVALLIS.STD PYRUS.CORVALLIS.STD PYRUS.CORVALLIS.STD PYRUS.CORVALLIS.STD PYRUS.CORVALLIS.STD PYRUS.CORVALLIS.STD PYRUS.CORVALLIS.STD PYRUS.CORVALLIS.STD PYRUS.CORVALLIS.STD PYRUS.CORVALLIS.STD PYRUS.CORVALLIS.STD PYRUS.CORVALLIS.STD PYRUS.CORVALLIS.STD PYRUS.CORVALLIS.STD PYRUS.CORVALLIS.STD PYRUS.CORVALLIS.STD PYRUS.CORVALLIS.STD PYRUS.CORVALLIS.STD PYRUS.CORVALLIS.STD PYRUS.WIEGREFE.1992 PYRUS.WIEGREFE.1992 PYRUS.CORVALLIS.1986 PYRUS.CORVALLIS.1987 PYRUS.CORVALLIS.1988 PYRUS.CORVALLIS.1988 PYRUS.CORVALLIS.1989 PYRUS.CORVALLIS.1990 PYRUS.CORVALLIS.1987 PYRUS.CORVALLIS.1988 PYRUS.CORVALLIS.1989 PYRUS.CORVALLIS.1990 PYRUS.CORVALLIS.1987 PYRUS.CORVALLIS.1987 PYRUS.CORVALLIS.1987 PYRUS.CORVALLIS.1988 PYRUS.CORVALLIS.1989 PYRUS.CORVALLIS.1990 PYRUS.CORVALLIS.1987