NCGR-Corvallis Pyrus Catalog

Cold Hardy Genotypes

Note: Scions cannot be certified free of Erwinia amylovora

Follow links to the Germplasm Resources Information Network (GRIN) for additional accession information.
Catalog last updated: 10 March 2016

NCGR-Corvallis Distribution Policies

Traits listed are intended for preliminary subgrouping of accessions. Traits are from germplasm release notices, published reports, or observations made at NCGR-Corvallis.

• Ames = PI 541115 (15.002) - Pyrus communis L.
  - Pedigree: Chance seedling
  - Virus Biological Assays - Negative: NP-1990 PV-1990
  - Traits: FIRE BLIGHT RESISTANT, COLD HARDY, EARLY RIPE, DIPLOID (flow cytometry 2012)
• Andrew (3x) = PI 617627 (2556.001) - Pyrus hybrid
  - Pedigree: P. ussuriensis x Bartlett
  - Virus Biological Assays - Negative: NP-1996 PV-1996
  - Traits: COLD HARDY, POLYPLOID (3x flow cytometry 2012)
• Beierschmitt = PI 541455 (1306.003) - Pyrus communis L.
  - Pedigree: Seedling selection of cultivar Bartlett
  - Virus Lab Assays - Negative: PBCVd-2000
  - Virus Biological Assays - Negative: NP-1990 PV-1991, Uncertain: MM-2003
  - Traits: QUINCE COMPATIBLE, COLD HARDY, DIPLOID (flow cytometry)
• Bere-obtjabra (oktjabra?) = PI 232872 (50.002) - Pyrus communis L.
  - Virus Lab Assays - Negative: ASGV-1989
  - Virus Biological Assays - Negative: NP-1990 PV-1987 VC-1989
  - Traits: COLD HARDY, Poor fruit quality, DIPLOID (flow cytometry 2012)
• Bergamotte Arsene Sannier = PI 136620 (1064.001) - Pyrus communis L.
  - Virus Biological Assays - Negative: N.Poiteau-1988 P.Crassane-1984 Pyronia-1985
  - Traits: COLD RESISTANT, LATE RIPE, HEIRLOOM, DIPLOID (flow cytometry 2012)
• Beurré Giffard = PI 541144 (77.002) - Pyrus communis L.
  - Pedigree: Chance seedling
  - Virus Lab Assays - Negative: PBCVd-2000, Uncertain: ASGV-1989
  - Virus Biological Assays - Negative: MM-2002 NP-1990
  - Traits: QUINCE COMPATIBLE, EARLY RIPE, COLD HARDY (fruited in Anchorage), DIPLOID (flow cytometry), HEIRLOOM
• Beurré Giffard = PI 541548 (2274.001) - Pyrus communis L.
  - Pedigree: Chance seedling
  - Virus Biological Assays - Negative: NP-1990 PV-1991 VC-1991
  - Traits: QUINCE COMPATIBLE, COLD HARDY (fruited in Anchorage), HEIRLOOM, DIPLOID (flow cytometry 2012)
• Cabot = PI 657926 (2919.001) - Pyrus communis L.
  - Traits: COLD HARDY, DIPLOID (flow cytometry 2012)
• Cedar Lane Farm 1 = PI 617552 (2369.001) - Pyrus communis L.
  - Virus Biological Assays - Negative: NP-1991 PV-1991
  - Traits: COLD HARDY, DIPLOID (flow cytometry 2012)
• Cedar Lane Farm 3 = PI 617553 (2370.001) - Pyrus communis L.
  - Virus Biological Assays - Negative: MM-1999 NP-1993 PV-1997
  - Traits: COLD HARDY, DIPLOID (flow cytometry 2012)
• Clara Frijs (Comtesse Clara Frijs) = PI 105193 (1079.001) - Pyrus communis L.
  - Virus Lab Assays - Negative: PBCVd-2000
  - Virus Biological Assays - Negative: Bosc-1988 M.micromalus-2002 N.Poiteau-1988 P.Crassane-1984 Pyronia-1985
  - Traits: QUINCE COMPATIBLE, DIPLOID (flow cytometry), COLD HARDY, HEIRLOOM
• Concorde = PI 665740 (2533.001) - Pyrus communis L.
  - Pedigree: Conference x Doyenne du Comice
  - Virus Biological Assays - Negative: NP-1995 PV-1995
  - Traits: QUINCE COMPATIBLE, COLD HARDY (fruited in Anchorage), DIPLOID (flow cytometry 2012)
• David = PI 657927 (2920.001) - Pyrus hybrid
  - Pedigree: Pyrus ussuriensis x Bartlett
  - Virus Biological Assays - Negative: NP-2009, Uncertain: PV-2009
  - Traits: COLD HARDY, DIPLOID (flow cytometry 2012)
• Enie = PI 617571 (2454.001) - Pyrus communis L.
  - Pedigree: Zuckerbirne x Clapp Favorite
  - Virus Biological Assays - Negative: NP-1992 PV-1993
  - Traits: COLD HARDY, DIPLOID (flow cytometry 2012)
• Flemish Beauty = PI 541189 (225.003) - Pyrus communis L.
  - Pedigree: Chance seedling
  - Virus Lab Assays - Negative: TOMRSV-1988, Uncertain: PBCVd-2000
  - Virus Biological Assays - Negative: MM-2003 NP-1989
  - Traits: FIRE BLIGHT SUSCEPTIBLE, COLD HARDY, MILDEW RESISTANT, QUINCE COMPATIBLE, DIPLOID (flow cytometry), HEIRLOOM
• Gaspard (=Summercrisp) = PI 617556 (2373.001) - Pyrus communis L.
  - Virus Biological Assays - Negative: MM-2001 NP-1992 PV-1991
  - Traits: COLD HARDY
• Golden Spice = PI 541547 (2273.001) - Pyrus communis L.
  - Pedigree: Parentage unknown
  - Virus Lab Assays - Negative: PBCVd-2000
  - Virus Biological Assays - Negative: MM-1998 NP-1990 PV-1991
  - Traits: COLD HARDY, DIPLOID (flow cytometry)
• Gourmet = PI 541804 (1661.001) - Pyrus hybrid
  - Pedigree: South Dakota F15 x Ewart
  - Virus Lab Assays - Negative: PBCVd-2000
  - Virus Biological Assays - Negative: N.Poiteau-1987 Pyronia-1987
  - Traits: DIPLOID (flow cytometry), COLD HARDY
• Hansen Siberian Pear = PI 542004 (1095.001) - Pyrus ussuriensis Maxim.
  - Pedigree: Probably a seedling selection
  - Virus Lab Assays - Negative: PBCVd-2000
  - Virus Biological Assays - Negative: N.Poiteau-1989 Pyronia-1988, Uncertain: Bosc-1989 M.micromalus-2003
  - Traits: COLD HARDY, MILDEW RESISTANT, LOW CHILL, EARLY BLOOM, DIPLOID (flow cytometry), FIRE BLIGHT RESISTANT
• Harbin (P. ussuriensis) = PI 542019 (1318.001) - Pyrus ussuriensis Maxim.
  - Pedigree: Selection of seed-propagated variety from China
  - Virus Lab Assays - Negative: PBCVd-2000
  - Virus Biological Assays - Negative: M.micromalus-2003 N.Poiteau-1988 P.Crassane-1984 Pyronia-1987
  - Traits: FIRE BLIGHT RESISTANT, COLD HARDY, MILDEW RESISTANT, DIPLOID (flow cytometry)
• Harrow Delight (HW 603) = PI 541431 (1404.001) - Pyrus communis L.
  - Pedigree: Bartlett x (Early Sweet x Old Home)
  - Virus Biological Assays - Negative: Bosc-1989 N.Poiteau-1987 P.Crassane-1985 Pyronia-1990
  - Traits: FIRE BLIGHT RESISTANT, QUINCE COMPATIBLE, COLD HARDY (fruited in Anchorage)
• Helmer = PI 617591 (2515.001) - Pyrus sp. - VIRUS INFECTED
  - Pedigree: Clone from a pear growing wild in northern Idaho
  - Virus Biological Assays - Positive: NP-1997 PV-1997
  - Traits: COLD HARDY, apparently SELF-FERTILE
• Honeysweet = PI 541320 (280.001) - Pyrus communis L.
  - Pedigree: Seckel x US 220 (Vermont Beauty x Roi Charles De Wurtemburg)
  - Virus Biological Assays - Negative: Bosc-1989 N.Poiteau-1988 P.Crassane-1985
  - Traits: FIRE BLIGHT RESISTANT, COLD HARDY
• Hudar = PI 541477 (2295.001) - Pyrus communis L.
  - Virus Biological Assays - Negative: MM-2001 NP-1991 PV-1991
  - Traits: COLD HARDY, EARLY RIPE
• Ilinka = PI 483372 (1526.002) - Pyrus hybrid
  - Virus Biological Assays - Negative: NP-1989 PV-1987
  - Traits: COLD HARDY, HEIRLOOM
• Illinois 80E-1 (Illinois selection from Russian seed) = PI 617607 (2532.001) - Pyrus communis L.
  - Pedigree: Seedling selection - seed from Russia
  - Virus Biological Assays - Negative: MM-1997 NP-1999 PV-1997
  - Traits: COLD HARDY, FIRE BLIGHT RESISTANT, WIDE BRANCH ANGLES, FROST RESISTANT FLOWERS
• India NIC 20814 = PI 665807 (2748.001) - Pyrus pashia hybrid
  - Virus Biological Assays - Negative: PV-2003
  - Traits: NOT COLD HARDY
• Johantorp = PI 285530 (304.001) - Pyrus communis L.
  - Virus Biological Assays - Negative: Bosc-1988 N.Poiteau-1987 P.Crassane-1984 Pyronia-1984 V.Crab-1988
  - Traits: VERY LATE RIPE, COLD HARDY, GOOD STORAGE, CURATOR CHOICE
• John = PI 617629 (2558.001) - Pyrus hybrid
  - Pedigree: Pyrus ussuriensis x Aspa
  - Virus Biological Assays - Negative: MM-1999 NP-1996 PV-1996
  - Traits: COLD HARDY
• Jubilee = PI 437051 (306.001) - Pyrus communis ssp. pyraster (L.) Ehrh.
  - Virus Lab Assays - Negative: PBCVd-2000
  - Virus Biological Assays - Negative: M.micromalus-2003 Pyronia-1984
  - Traits: COLD HARDY, DIPLOID (flow cytometry)
• Jubileinaia = PI 292376 (307.001) - Pyrus communis L. - VIRUS INFECTED
  - Virus Biological Assays - Positive: Vein Yellows-1985, Negative: Bosc-1988
  - Traits: COLD HARDY
• Kharnak I (donkey pear) = PI 665794 (2662.002) - Pyrus pashia hybrid
  - Traits: NOT COLD HARDY, FRUIT HARD and only fit for donkeys
• Krylov = PI 127715 (1106.001) - Pyrus hybrid
  - Pedigree: Saponsky x Lincoln
  - Virus Biological Assays - Negative: M.micromalus-1998 N.Poiteau-1985 Pyronia-1989
  - Traits: FIRE BLIGHT RESISTANT, COLD HARDY, MILDEW RESISTANT, SCAB RESISTANT, DIPLOID (flow cytometry)
• Lesnaia Krasavitza (=Flemish Beauty) = PI 292375 (348.001) - Pyrus communis L.
  - Virus Lab Assays - Negative: PBCVd-2000
  - Virus Biological Assays - Negative: Bosc-1987 M.micromalus-2002 N.Poiteau-1988 P.Crassane-1984 Pyronia-1984 V.Crab-1989
  - Traits: COLD HARDY, DIPLOID (flow cytometry)
• Luscious = PI 541322 (367.001) - Pyrus communis L.
  - Pedigree: SD-E31 x Ewart
  - Virus Lab Assays - Negative: PBCVd-2000
  - Virus Biological Assays - Negative: Bosc-1988 N.Poiteau-1987 P.Crassane-1984, Uncertain: M.micromalus-2003
  - Traits: COLD HARDY (fruited in Anchorage), MILDEW RESISTANT, SCAB RESISTANT, LOW CHILL , FIRE BLIGHT RESISTANT, DIPLOID (flow cy
• Mandan 58-4 = PI 541724 (1114.004) - Pyrus hybrid
  - Pedigree: Patten x Parker, hybrid
  - Virus Biological Assays - Negative: NP-1989 PV-1990
  - Traits: COLD HARDY
• Manning-Miller = PI 541480 (2296.001) - Pyrus communis L. - VIRUS INFECTED
  - Pedigree: Unknown. Seed prob. sent from Massachusetts by R. Manning.
  - Virus Biological Assays - Positive: NP-1993 PV-1993 VY-1985
  - Traits: COLD HARDY, SCAB RESISTANT, FIRE BLIGHT RESISTANT, DIPLOID (flow cytometry 2014)
• Manning-Miller = PI 541480 (2296.002) - Pyrus communis L.
  - Pedigree: Unknown. Seed prob. sent from Massachusetts by R. Manning.
  - Virus Biological Assays - Negative: NP-2003 PV-2001
  - Traits: COLD HARDY, SCAB RESISTANT, FIRE BLIGHT RESISTANT
• Menie = PI 318838 (1723.001) - Pyrus communis L.
  - Pedigree: Kurskaya x Flemish Beauty
  - Virus Biological Assays - Negative: N.Poiteau-1990 Pyronia-1991
  - Traits: COLD HARDY
• Michurin Beurré Zimnaya (Winter) = PI 312503 (2386.001) - Pyrus hybrid
  - Virus Biological Assays - Negative: NP-1992 PV-1991
  - Traits: LATE RIPE, HEIRLOOM, COLD HARDY
• Miney = PI 617572 (2455.001) - Pyrus communis L.
  - Pedigree: Zuckerbirne x Clapp Favorite
  - Virus Biological Assays - Negative: NP-1992 PV-1992
  - Traits: FIRE BLIGHT RESISTANT, COLD HARDY
• Moe = PI 541347 (1124.003) - Pyrus communis L.
  - Pedigree: Zuckerbirne x Clapp Favorite
  - Virus Biological Assays - Negative: NP-1990 PV-1995
  - Traits: FIRE BLIGHT RESISTANT, COLD HARDY
• Naspati = PI 250449 (411.001) - Pyrus pashia Buch.-Ham. ex D. Don
  - Virus Lab Assays - Negative: PBCVd-2000
  - Virus Biological Assays - Negative: M.micromalus-2002 N.Poiteau-1985 P.Crassane-1984 Pyronia-1991 V.Crab-1988
  - Traits: VERY LATE RIPE, LOW CHILL, NOT COLD HARDY, MILDEW RESISTANT, SCAB RESISTANT, DIPLOID (flow cytometry)
• Nepal 5049 = PI 654937 (2718.001) - Pyrus pashia hybrid
  - Virus Biological Assays - Negative: NP-2002 PV-2002
  - Traits: LOW CHILL, NOT COLD HARDY
• Nepal 6001 [M. baccata] = PI 665787 (2868.001) - Pyrus pashia Buch.-Ham. ex D. Don
  - Pedigree: Collected from the wild in Nepal.
  - Traits: NOT COLD HARDY
• Nova = PI 541505 (2110.004) - Pyrus communis L.
  - Virus Lab Assays - Negative: PBCVd-2000
  - Virus Biological Assays - Negative: MM-1998
  - Traits: COLD HARDY (fruited in Anchorage), PRECOCIOUS, apparently SELF-FERTILE
• Okolo = PI 541908 (1185.001) - Pyrus pyrifolia (Burm. f.) Nakai
  - Pedigree: Seedling selection
  - Virus Biological Assays - Negative: N.Poiteau-1985 Pyronia-1988 V.Crab-1988, Uncertain: Bosc-1989
  - Traits: FIRE BLIGHT RESISTANT, COLD HARDY, SCAB RESISTANT
• Old Home = PI 541456 (431.001) - Pyrus communis L.
  - Pedigree: Chance seedling
  - Virus Lab Assays - Negative: PBCVd-2000
  - Virus Biological Assays - Negative: Bosc-1989 M.micromalus-1996 Pyronia-1984 V.Crab-1992, Uncertain: N.Poiteau-2003
  - Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK, QUINCE COMPATIBLE, COLD HARDY, DIPLOID (flow cytometry)
• Olia = PI 143979 (1130.001) - Pyrus hybrid - VIRUS INFECTED
  - Pedigree: P. ussuriensis x Finland Early Yellow
  - Virus Biological Assays - Positive: P.Crassane-1984 Vein Yellows-1985, Negative: Bosc-1989
  - Traits: COLD HARDY, FIRE BLIGHT RESISTANT
• Orel No. 15 = PI 541239 (433.002) - Pyrus hybrid
  - Virus Biological Assays - Negative: NP-1989 PV-1989
  - Traits: FIRE BLIGHT RESISTANT, EARLY RIPE, COLD HARDY, Blooms with Bosc, HEIRLOOM
• P. betulifolia 'Du Li' - Shaanxi, China = PI 638018 (2828.001)
  - Pedigree: Collected in the wild from Shaanxi Province, China.
  - Traits: COLD HARDY
• P. betulifolia 'Du Li' - Shaanxi, China = PI 638018 (2828.002)
  - Pedigree: Collected in the wild from Shaanxi Province, China.
  - Traits: COLD HARDY
• P. betulifolia - Shaanxi, China = PI 541007 (2291.002)
  - Pedigree: Collected from the wild in China
  - Traits: COLD HARDY, DIPLOID (flow cytometry)
• P. betulifolia - Shaanxi, China = PI 541007 (2291.003)
  - Pedigree: Collected from the wild in China
  - Traits: COLD HARDY
• P. betulifolia - Shaanxi, China = PI 541007 (2291.004)
  - Pedigree: Collected from the wild in China
  - Traits: COLD HARDY
• P. betulifolia - Shaanxi, China = PI 541007 (2291.006)
  - Pedigree: Collected from the wild in China
  - Traits: COLD HARDY
• P. betulifolia 96123 - Heilongjiang, China = PI 617649 (2589.000)
  - Pedigree: collected from the wild in Heilongjiang, China
  - Traits: COLD HARDY
• P. gharbiana = PI 541663 (789.001)
  - Pedigree: Seedling selection from seed collected in Morocco
  - Virus Biological Assays - Negative: B13-1983 N.Poiteau-1985 Pyronia-1987
  - Traits: NOT COLD HARDY
• P. gharbiana = PI 541665 (792.001)
  - Pedigree: Seedling selection from seed collected wild in Morocco
  - Virus Biological Assays - Negative: B13-1983 N.Poiteau-1985 P.Crassane-1983 Pyronia-1987
  - Traits: NOT COLD HARDY
• P. gharbiana = PI 541666 (794.001)
  - Pedigree: Seedling selection from seed collected wild in Morocco
  - Virus Biological Assays - Negative: B13-1983 N.Poiteau-1985 Pyronia-1987
  - Traits: NOT COLD HARDY
• P. gharbiana Long Ashton = PI 541669 (1621.001)
  - Virus Biological Assays - Negative: N.Poiteau-1987 Pyronia-1993
  - Traits: NOT COLD HARDY
• P. gharbiana No. 1 = PI 541662 (787.001)
  - Pedigree: Seedling selection from seedlot collected in Morocco
  - Virus Lab Assays - Negative: PBCVd-2000
  - Virus Biological Assays - Negative: B13-1983 M.micromalus-2002 N.Poiteau-1985 P.Crassane-1983 Pyronia-1985
  - Traits: DIPLOID (flow cytometry), NOT COLD HARDY
• P. gharbiana No. 4 = PI 541664 (790.001)
  - Pedigree: Seedling selection from seedlot collected in Morocco
  - Virus Biological Assays - Negative: B13-1983 N.Poiteau-1985 Pyronia-1987
  - Traits: NOT COLD HARDY
• P. hybrid - North Dakota = PI 617511 (922.001)
  - Virus Biological Assays - Negative: N.Poiteau-1990 Pyronia-1988
  - Traits: COLD HARDY
• P. koehnei = PI 541825 (808.001)
  - Pedigree: Seedling selection from seed collected in California
  - Virus Biological Assays - Negative: N.Poiteau-1985 Pyronia-1988
  - Traits: NOT COLD HARDY
• P. koehnei = PI 541826 (809.001)
  - Pedigree: Seedling selection from seed collected in California
  - Virus Biological Assays - Negative: N.Poiteau-1988 P.Crassane-1985, Uncertain: B13-1983
  - Traits: NOT COLD HARDY
• P. koehnei = PI 541828 (813.001)
  - Pedigree: Seedling selection from seedlot collected in California
  - Virus Biological Assays - Negative: B13-1983 N.Poiteau-1987 P.Crassane-1985
  - Traits: NOT COLD HARDY
• P. koehnei = PI 541829 (815.001)
  - Pedigree: Seedling selection from seedlot collected in California
  - Virus Biological Assays - Negative: N.Poiteau-1985 Pyronia-1987
  - Traits: NOT COLD HARDY
• P. koehnei = PI 541834 (823.001)
  - Pedigree: Seedling selection from seedlot collected in Taiwan
  - Virus Biological Assays - Negative: N.Poiteau-1990
  - Traits: NOT COLD HARDY
• P. koehnei = PI 541834 (825.001)
  - Pedigree: Seedling selection from seedlot collected in Taiwan
  - Virus Biological Assays - Negative: Pyronia-1990
  - Traits: LOW CHILL, NOT COLD HARDY
• P. koehnei (pure) = PI 541832 (818.001)
  - Pedigree: Seedling selection
  - Virus Biological Assays - Negative: N.Poiteau-1990 Pyronia-1989, Uncertain: M.micromalus-2003
  - Traits: FIRE BLIGHT RESISTANT, LOW CHILL, NOT COLD HARDY, DIPLOID (flow cytometry)
• P. koehnei hybrid = PI 541834 (820.001)
  - Pedigree: Seedling selection from seedlot collected in Taiwan
  - Virus Biological Assays - Negative: N.Poiteau-1989 Pyronia-1991
  - Traits: NOT COLD HARDY
• P. mamorensis - Long Ashton = PI 541855 (1622.001)
  - Virus Biological Assays - Negative: N.Poiteau-1987 Pyronia-1990
  - Traits: NOT COLD HARDY
• P. mamorensis - Morocco = PI 541843 (834.001)
  - Pedigree: Seedling selection from seedlot collected in Morocco
  - Virus Biological Assays - Negative: N.Poiteau-1987 P.Crassane-1985
  - Traits: NOT COLD HARDY
• P. mamorensis - Morocco = PI 541844 (835.001)
  - Pedigree: Seedling selection from seed collected wild in Morocco
  - Virus Biological Assays - Negative: M.micromalus-2002 N.Poiteau-1987 P.Crassane-1985
  - Traits: NOT COLD HARDY, DIPLOID (flow cytometry)
• P. mamorensis - Morocco = PI 541846 (837.001) - VIRUS INFECTED
  - Pedigree: Seedling selection from seed collected wild in Morocco
  - Virus Biological Assays - Positive: P.Crassane-1985, Negative: N.Poiteau-1990 Pyronia-1987
  - Traits: NOT COLD HARDY
• P. mamorensis - Morocco = PI 541847 (841.001)
  - Pedigree: Seedling selection from seed collected in Morocco
  - Virus Biological Assays - Negative: N.Poiteau-1987 P.Crassane-1983 Pyronia-1987
  - Traits: NOT COLD HARDY
• P. mamorensis - Morocco = PI 541848 (842.001)
  - Pedigree: Seedling selection from seed collected in Morocco
  - Virus Biological Assays - Negative: N.Poiteau-1987 P.Crassane-1983 Pyronia-1987
  - Traits: NOT COLD HARDY
• P. mamorensis - Morocco = PI 541849 (844.001)
  - Pedigree: Seedling selection from seed collected wild in Morocco
  - Virus Biological Assays - Negative: N.Poiteau-1985 P.Crassane-1983, Uncertain: B13-1983
  - Traits: NOT COLD HARDY
• P. mamorensis - Morocco = PI 541851 (846.001)
  - Pedigree: Seedling selection from seed collected wild in Morocco
  - Virus Biological Assays - Negative: B13-1983 N.Poiteau-1985 P.Crassane-1983 Pyronia-1990
  - Traits: NOT COLD HARDY
• P. mamorensis - Morocco = PI 541852 (857.001)
  - Pedigree: Seedling selection from seedlot collected in Morocco
  - Virus Biological Assays - Negative: N.Poiteau-1985
  - Traits: NOT COLD HARDY
• P. pashia - Nepal = PI 665785 (2448.001)
  - Virus Lab Assays - Negative: PBCVd-2000
  - Virus Biological Assays - Negative: NP-1992 PV-1991
  - Traits: NOT COLD HARDY
• P. regelii - Boraldy River Forest, Kazakhstan = PI 641279 (2587.000)
  - Pedigree: Collected from the wild in Kazakhstan.
  - Traits: COLD HARDY
• P. spinosa (amygdaliformis) - Greece (hybrid?) = PI 540923 (641.001)
  - Pedigree: Seedling selection from seed collected in Greece
  - Virus Biological Assays - Negative: N.Poiteau-1985 Pyronia-1985
  - Traits: NOT COLD HARDY
• Parker = PI 657928 (2921.001) - Pyrus communis hybrid
  - Pedigree: Open pollinated seedling of a Manchurian pear cultivar.
  - Traits: FIRE BLIGHT SUSCEPTIBLE, COLD HARDY
• Peter = PI 617631 (2561.001) - Pyrus ussuriensis hybrid
  - Pedigree: Pyrus ussuriensis x Aspa
  - Virus Biological Assays - Negative: NP-1996 PV-1999
  - Traits: COLD HARDY
• Philip = PI 641283 (2738.001) - Pyrus communis L.
  - Pedigree: Pyrus ussuriensis x Aspa
  - Virus Biological Assays - Negative: PV-2003, Uncertain: NP-2003
  - Traits: COLD HARDY
• Pioneer No. 3 = PI 541549 (2278.002) - Pyrus communis L.
  - Virus Biological Assays - Negative: PV-2002, Uncertain: NP-2003
  - Traits: COLD HARDY
• Pyronia veitchii (Pyrus x Cydonia) IRP 82-1 = CIGC 9 (9.001) - ×Pyronia veitchii
  - Pedigree: Pyrus communis x Cydonia oblonga
  - Virus Biological Assays - Tested negative on: NP PC PV
  - Traits: VIRUS INDICATOR, COLD HARDY
• Radchinskaia = PI 292379 (471.004) - Pyrus communis L.
  - Virus Biological Assays - Negative: NP-1990 PV-1992
  - Traits: COLD HARDY, DIPLOID (flow cytometry 2012)
• Sauvignac = PI 657929 (2922.001) - Pyrus communis L.
  - Traits: COLD HARDY, DIPLOID (flow cytometry 2012)
• Shinseiki = PI 224087 (528.001) - Pyrus pyrifolia (Burm. f.) Nakai
  - Pedigree: Nijiesiki x Chojuro
  - Virus Lab Assays - Negative: APMV-1987 PBCVd-2000 PNRSV-1987
  - Virus Biological Assays - Negative: N.Poiteau-1987 P.Crassane-1984 Pyronia-1985 V.Crab-1988, Uncertain: M.micromalus-2003
  - Traits: BLACK SPOT RESISTANT, SCAB RESISTANT, COLD HARDY, DIPLOID (flow cytometry)
• Simon = PI 617633 (2563.001) - Pyrus hybrid
  - Pedigree: Pyrus ussuriensis x Aspa
  - Virus Biological Assays - Negative: NP-1996 PV-1996
  - Traits: COLD HARDY, DIPLOID (flow cytometry 2012)
• Smokvarka = PI 502176 (34.001) - ×Sorbopyrus auricularis var. bulbiformis
  - Traits: PSYLLA RESISTANT, EDIBLE LARGE FRUIT, COLD HARDY
• Southworth = PI 541350 (1145.003) - Pyrus communis L.
  - Virus Biological Assays - Negative: NP-1991 PV-1991
  - Traits: FIRE BLIGHT RESISTANT, COLD HARDY, apparently SELF-FERTILE, HEIRLOOM, DIPLOID (flow cytometry 2012)
• Stacey = PI 617529 (2297.001) - Pyrus communis L.
  - Pedigree: Chance seedling
  - Virus Biological Assays - Negative: MM-2001 NP-1992 PV-1992
  - Traits: COLD HARDY, EARLY RIPE, DIPLOID (flow cytometry 2012)
• Summercrisp = PI 665739 (2328.001) - Pyrus hybrid
  - Pedigree: Unknown, P. communis and ussuriensis suspected in ancestry
  - Virus Biological Assays - Negative: NP-1992 PV-1991
  - Traits: COLD HARDY (fruited in Anchorage), DIPLOID (flow cytometry 2012)
• Tait Dropmore = PI 617634 (2564.001) - Pyrus communis L.
  - Pedigree: Open pollinated seedling of Patten
  - Virus Biological Assays - Negative: NP-1996 PV-1996
  - Traits: COLD HARDY, DIPLOID (flow cytometry 2012)
• Thomas = PI 617635 (2565.001) - Pyrus hybrid
  - Pedigree: Pyrus ussuriensis x Bartlett
  - Virus Biological Assays - Negative: NP-1996 PV-1996
  - Traits: COLD HARDY, DIPLOID (flow cytometry 2012)
• Tioma = PI 134606 (573.002) - Pyrus hybrid
  - Pedigree: P. ussuriensis x Finland Early Yellow
  - Virus Lab Assays - Negative: PBCVd-2000
  - Virus Biological Assays - Negative: MM-2002 NP-1989 PV-1987
  - Traits: COLD HARDY, MILDEW RESISTANT, DIPLOID (flow cytometry)
• Ure = PI 541556 (2285.001) - Pyrus hybrid
  - Virus Biological Assays - Negative: NP-1990 PV-1990
  - Traits: COLD HARDY, SCAB RESISTANT, LOW CHILL, DIPLOID (flow cytometry 2012)
• Variolosa (P. pashia hyb.) = PI 541717 (589.002) - Pyrus pashia Buch.-Ham. ex D. Don
  - Pedigree: P. pashia x P. communis
  - Virus Lab Assays - Negative: PBCVd-2000
  - Virus Biological Assays - Negative: MM-1998 NP-1989 PV-1989
  - Traits: FIRE BLIGHT RESISTANT, SCAB RESISTANT, NOT COLD HARDY, DIPLOID (flow cytometry)
• Waterville = PI 617530 (2298.001) - Pyrus communis L.
  - Virus Biological Assays - Negative: MM-2001 NP-1992 PV-1991
  - Traits: COLD HARDY, DIPLOID (flow cytometry 2012)