NCGR-Corvallis Pyrus Catalog
Rootstock Selections
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
Traits listed are intended for preliminary subgrouping of accessions. Traits are from germplasm release notices, published reports, or observations made at NCGR-Corvallis.
- B-11 = PI 437066 (906.001) - Pyrus communis L.
- Pedigree: Selection
- Virus Lab Assays - Negative: PBCVd-2000
- Virus Biological Assays - Negative: LA62-1983 M.micromalus-1998 N.Poiteau-1985 Pyronia-1985
- Traits: ROOTSTOCK, DIPLOID (flow cytometry)
- B-12 = PI 437067 (901.001) - Pyrus communis L.
- Pedigree: Selection
- Virus Lab Assays - Negative: PBCVd-2000
- Virus Biological Assays - Negative: LA62-1983 M.micromalus-2003 N.Poiteau-1987 P.Crassane-1985 Pyronia-1985
- Traits: ROOTSTOCK, MILDEW RESISTANT, DIPLOID (flow cytometry)
- B-22 = PI 541970 (2288.001) - Pyrus communis L.
- Pedigree: Rootstock selection
- Virus Biological Assays - Negative: MM-1996 NP-1990 PV-1992 VC-1992
- Traits: ROOTSTOCK
- B-27 = PI 541972 (2290.001) - Pyrus hybrid
- Pedigree: Rootstock selection
- Virus Biological Assays - Negative: NP-1990 PV-1991
- Traits: ROOTSTOCK
- BP-1 (Bien Donne 1) = PI 436538 (101.001) - Pyrus communis L.
- Pedigree: Seedling selection from seed collected wild in S. Africa
- Virus Lab Assays - Negative: PBCVd-2000 TOMRSV-1986, Uncertain: ASGV-1989
- Virus Biological Assays - Negative: Bosc-1989 LA62-1983 M.micromalus-2003 N.Poiteau-1988 P.Crassane-1984 Pyronia-1997
- Traits: LATE RIPE, ROOTSTOCK-Semidwarf, Precocious, DIPLOID (flow cytometry)
- BP-2 (Bien Donne 2) = PI 420810 (102.001) - Pyrus communis L.
- Pedigree: Seedling selection from seed collected wild in S. Africa
- Virus Lab Assays - Negative: PBCVd-2000 TOMRSV-1986, Uncertain: ASGV-1989
- Virus Biological Assays - Negative: M.micromalus-1996 N.Poiteau-1988 P.Crassane-1984 Pyronia-1985
- Traits: ROOTSTOCK-Vigorous, Precocious, DIPLOID (flow cytometry 2012)
- BP-3 (B-14) = PI 541971 (2289.001) - Pyrus hybrid
- Pedigree: Seedling selection from seed collected wild in S. Africa
- Virus Lab Assays - Negative: PBCVd-2000
- Virus Biological Assays - Negative: MM-1998 NP-1990 PV-1991
- Traits: ROOTSTOCK-Vigorous, Precocious, SCAB RESISTANT, DECLINE SUSCEPTIBLE, DIPLOID (flow cytometry 2012)
- Ba Li Xiang [Ba Li Hsiang] = PI 541985 (27.002) - Pyrus ussuriensis Maxim. - VIRUS INFECTED
- Pedigree: old pear local selection from Liaoning and Hebei Provinces
- Virus Lab Assays - Negative: PBCVd-2000
- Virus Biological Assays - Positive: MM-2003, Negative: NP-1988 PV-1988
- Traits: VERY LATE RIPE, FIRE BLIGHT RESISTANT, MILDEW RESISTANT, ROOTSTOCK, SCAB RESISTANT, DIPLOID (flow cytometry), HEIRLOOM
- Bai Li = PI 654959 (2785.001) - Pyrus ×bretschneideri Rehder
- Pedigree: Recived from Kazakhstan, where they are used as pear rootstocks. Originated in China.
- Virus Biological Assays - Negative: NP-2003
- Traits: ROOTSTOCK, DIPLOID (flow cytometry 2012)
- Burkett x P. betulifolia = PI 541786 (1358.001) - Pyrus hybrid
- Pedigree: Burkett x P. betulifolia seedling selection
- Virus Biological Assays - Negative: B13-1983 N.Poiteau-1985 Pyronia-1987
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK, SCAB RESISTANT
- Chieh Li x Japanese Golden Russet (Decline Resist.) = PI 541760 (1226.001) - Pyrus hybrid
- Pedigree: Chieh Li x Jap. Gold Russet
- Virus Biological Assays - Negative: N.Poiteau-1985 Pyronia-1987
- Traits: ROOTSTOCK, PEAR DECLINE RESISTANT, DIPLOID (flow cytometry 2014)
- Chieh Li x Japanese Golden Russet (Decline Susc.) = PI 541761 (1227.001) - Pyrus hybrid
- Pedigree: Chieh Li x Jap. Gold. Russet
- Virus Biological Assays - Negative: N.Poiteau-1991 Pyronia-1988 V.Crab-1991
- Traits: ROOTSTOCK, SCAB RESISTANT, PEAR DECLINE SUSCEPTIBLE
- Domestic Pear (OSU Seedling A) = PI 541449 (1584.001) - Pyrus communis L.
- Pedigree: Seedling selection A
- Virus Biological Assays - Negative: N.Poiteau-1987 Pyronia-1987
- Traits: ROOTSTOCK, POLYPLOID (3x flow cytometry 2013)
- Domestic Pear (OSU Seedling B) - looks like Bosc = PI 541450 (1585.001) - Pyrus communis L.
- Pedigree: Seedling selection B
- Virus Biological Assays - Negative: N.Poiteau-1987 Pyronia-1987
- Traits: MID-LATE RIPE, ROOTSTOCK
- Domestic Pear (OSU Seedling C) = PI 541451 (1586.001) - Pyrus communis L.
- Pedigree: Seedling selection C
- Virus Biological Assays - Negative: N.Poiteau-1987 Pyronia-1987
- Traits: ROOTSTOCK
- Estella = PI 541709 (216.002) - Pyrus hybrid
- Pedigree: Kieffer x P. communis
- Virus Biological Assays - Negative: NP-1990 PV-1990
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK
- F.12-184 (P-2430) = PI 541460 (2142.001) - Pyrus communis L.
- Pedigree: Seedling selection
- Virus Biological Assays - Negative: NP-1990 PV-1991
- Traits: ROOTSTOCK, ANEUPLOID (flow cytometry 2013,2014)
- French Resistant - rootstock clone = PI 617535 (2334.001) - Pyrus communis ssp. pyraster (L.) Ehrh. - VIRUS INFECTED
- Pedigree: Seedling selection
- Virus Biological Assays - Positive: NP-1993 PV-1993 VY-1985
- Traits: ROOTSTOCK
- French Resistant No. 1 - rootstock clone = PI 541193 (237.001) - Pyrus communis ssp. pyraster (L.) Ehrh. - VIRUS INFECTED
- Pedigree: Seedling selection
- Virus Biological Assays - Positive: N.Poiteau-1989, Negative: P.Crassane-1984, Uncertain: V.Crab-1988
- Traits: LATE RIPE, ROOTSTOCK
- Hawaii x Japanese Golden Russet = PI 541765 (1231.001) - Pyrus pyrifolia (Burm. f.) Nakai
- Pedigree: Hawaii x Jap. Gold. Russet
- Virus Biological Assays - Negative: B13-1983 N.Poiteau-1985 Pyronia-1987
- Traits: ROOTSTOCK, SCAB RESISTANT
- Hawaii x Japanese Golden Russet = PI 541766 (1232.002) - Pyrus pyrifolia (Burm. f.) Nakai
- Pedigree: Hawaii x Jap. Gold. Russet
- Virus Biological Assays - Negative: MM-1996 NP-1992 PV-1992
- Traits: ROOTSTOCK, SCAB RESISTANT
- Japanese Golden Russet x Mikado (Decline Resist.) = PI 541762 (1228.001) - Pyrus pyrifolia (Burm. f.) Nakai
- Pedigree: Jap. Gold. Russet x Mikado
- Virus Lab Assays - Negative: TOMRSV-1986
- Virus Biological Assays - Negative: N.Poiteau-1985
- Traits: ROOTSTOCK, SCAB RESISTANT, PEAR DECLINE SUSCEPTIBLE
- Japanese Golden Russet x Mikado (Decline Susc.) = PI 541763 (1229.001) - Pyrus pyrifolia (Burm. f.) Nakai
- Pedigree: Japanese Golden Russett x Mikado
- Virus Biological Assays - Negative: N.Poiteau-1985 Pyronia-1987
- Traits: ROOTSTOCK, SCAB RESISTANT, PEAR DECLINE SUSCEPTIBLE
- MM-38 = PI 541960 (1419.004) - Pyrus communis L.
- Virus Biological Assays - Negative: MM-1999 NP-1989 PV-1989
- Traits: ROOTSTOCK, SCAB RESISTANT
- N 217-27.12 (rootstock selection) = PI 665801 (2740.001) - Pyrus communis L.
- Virus Biological Assays - Uncertain: PV-2003
- Traits: ROOTSTOCK
- Nelis x P. betulifolia = PI 541777 (1316.001) - Pyrus hybrid - VIRUS INFECTED
- Pedigree: Nelis x P. betulaefolia seedling selection A
- Virus Biological Assays - Negative: RUSSIAN-1988 V.Crab-1988, Uncertain: N.Poiteau-1990
- Traits: ROOTSTOCK
- Nelis x P. betulifolia = PI 541777 (1316.002) - Pyrus hybrid
- Pedigree: Nelis x P. betulaefolia seedling selection A
- Virus Biological Assays - Negative: MM-1998 NP-1989 PV-1989
- Traits: ROOTSTOCK
- Nelis x P. betulifolia = PI 541800 (1480.001) - Pyrus hybrid
- Pedigree: Nelis x P. betulifolia seedling selection B
- Virus Biological Assays - Negative: N.Poiteau-1985 Pyronia-1987 V.Crab-1991
- Traits: ROOTSTOCK
- Nijisseiki x Old Home = PI 541767 (1233.001) - Pyrus hybrid
- Pedigree: Nijisseiki x Old Home
- Virus Biological Assays - Negative: B13-1983 N.Poiteau-1985
- Traits: ROOTSTOCK
- Nijisseiki x Old Home (Decline susceptible) = PI 541728 (415.001) - Pyrus hybrid
- Pedigree: Nijisseiki x Old home decline susceptible
- Virus Biological Assays - Negative: N.Poiteau-1987 P.Crassane-1984 Pyronia-1984 V.Crab-1989
- Traits: ROOTSTOCK, SCAB RESISTANT, PEAR DECLINE SUSCEPTIBLE
- OH 20 fire blight resistant rootstock = PI 541237 (425.001) - Pyrus communis L. - VIRUS INFECTED
- Pedigree: Old Home seedling selection, probably hybrid w/pyrifolia
- Virus Biological Assays - Positive: P.Crassane-1984, Negative: Bosc-1989
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK
- OH 50 fire blight resistant rootstock = PI 541238 (427.001) - Pyrus communis hybrid
- Pedigree: Old Home seedling selection
- Virus Biological Assays - Negative: Bosc-1989 N.Poiteau-1988 P.Crassane-1984 Pyronia-1984, Uncertain: V.Crab-1989
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK
- OHxF 1 = PI 541408 (1336.001) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale seedling selection
- Virus Biological Assays - Negative: N.Poiteau-1987 Pyronia-1987
- Traits: ROOTSTOCK, FIRE BLIGHT SUSCEPTIBLE
- OHxF 2 = PI 541413 (1342.001) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale seedling selection
- Virus Biological Assays - Negative: N.Poiteau-1990 Pyronia-1988
- Traits: ROOTSTOCK
- OHxF 4 = PI 541409 (1337.001) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale seedling selection
- Virus Biological Assays - Negative: B13-1983 M.micromalus-1999 N.Poiteau-1990 Pyronia-1987 V.Crab-1991
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK
- OHxF 5 = PI 541410 (1338.001) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale seedling selection
- Virus Biological Assays - Negative: B13-1983 N.Poiteau-1987 P.Crassane-1985
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK
- OHxF 7 = PI 541399 (1322.001) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale seedling selection
- Virus Biological Assays - Negative: M.micromalus-1997 N.Poiteau-1985 Pyronia-1987 V.Crab-1992
- Traits: ROOTSTOCK
- OHxF 9 = PI 541421 (1361.001) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale seedling selection
- Virus Biological Assays - Negative: N.Poiteau-1990 Pyronia-1987
- Traits: ROOTSTOCK
- OHxF 18 = PI 541397 (1320.001) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale seedling selection
- Virus Biological Assays - Negative: M.micromalus-1996 N.Poiteau-1985 Pyronia-1987 V.Crab-1991
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK-Vigorous
- OHxF 23 = PI 541411 (1339.001) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale seedling selection
- Virus Biological Assays - Negative: N.Poiteau-1987 Pyronia-1987
- Traits: ROOTSTOCK
- OHxF 29 = PI 541398 (1321.001) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale seedling selection
- Virus Biological Assays - Negative: M.micromalus-1997 N.Poiteau-1985 Pyronia-1987 V.Crab-1992
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK
- OHxF 34 = PI 541412 (1340.001) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale seedling selection
- Virus Biological Assays - Negative: B13-1983 N.Poiteau-1990 Pyronia-1984
- Traits: ROOTSTOCK-Semidwarf
- OHxF 40 = PI 541402 (1325.001) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale seedling selection
- Virus Biological Assays - Negative: N.Poiteau-1985 Pyronia-1987
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK-Productive
- OHxF 51 = PI 541369 (709.001) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale seedling selection
- Virus Lab Assays - Negative: PBCVd-2000
- Virus Biological Assays - Negative: B13-1983 M.micromalus-1998 N.Poiteau-2003 P.Crassane-1985 Pyronia-1984
- Traits: ROOTSTOCK-Dwarfing, Blooms with Bosc, DIPLOID (flow cytometry)
- OHxF 58 = PI 541454 (1613.001) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale seedling selection
- Virus Biological Assays - Negative: N.Poiteau-1987 Pyronia-1987, Uncertain: M.micromalus-2001
- Traits: ROOTSTOCK
- OHxF 69 = PI 665738 (1343.001) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale seedling selection
- Virus Biological Assays - Negative: B13-1983 N.Poiteau-1985 Pyronia-1984
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK-Semidwarf
- OHxF 87 = PI 541415 (1345.001) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale seedling selection
- Virus Lab Assays - Negative: PBCVd-2000
- Virus Biological Assays - Negative: N.Poiteau-1991 Pyronia-1984, Uncertain: M.micromalus-2003
- Traits: ROOTSTOCK-Semidwarf, Productive, Large Fruit Size, DIPLOID (flow cytometry)
- OHxF 97 = PI 541370 (726.001) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale seedling selection
- Virus Lab Assays - Negative: PBCVd-2000
- Virus Biological Assays - Negative: M.micromalus-1998 Pyronia-1987, Uncertain: N.Poiteau-2003
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK-Vigorous, Productive, DIPLOID (flow cytometry)
- OHxF 101 = PI 541416 (1350.001) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale seedling selection
- Virus Biological Assays - Negative: Pyronia-1987
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK, Blooms with Bartlett
- OHxF 109 = PI 541417 (1351.001) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale seedling selection
- Virus Biological Assays - Negative: N.Poiteau-1985 Pyronia-1987
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK
- OHxF 112 = PI 541418 (1354.001) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale seedling selection
- Virus Biological Assays - Negative: N.Poiteau-1990 Pyronia-1988
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK-Vigorous
- OHxF 130 = PI 541406 (1330.002) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale seedling selection
- Virus Biological Assays - Negative: MM-1999 NP-1987 PV-1987
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK
- OHxF 132 = PI 541404 (1327.001) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale seedling selection
- Virus Biological Assays - Negative: M.micromalus-2003 N.Poiteau-1987 P.Crassane-1984 Pyronia-1985 V.Crab-1992
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK
- OHxF 198 = PI 541419 (1359.001) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale seedling selection
- Virus Biological Assays - Negative: N.Poiteau-1990 Pyronia-1985 V.Crab-1992, Uncertain: M.micromalus-2001
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK-Vigorous
- OHxF 217 = PI 541371 (732.001) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale seedling selection
- Virus Biological Assays - Negative: B13-1983 N.Poiteau-1990 Pyronia-1988
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK-Semi-vigorous, Blooms with Bosc
- OHxF 226 = PI 541372 (733.001) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale seedling selection
- Virus Biological Assays - Negative: Pyronia-1987
- Traits: ROOTSTOCK
- OHxF 230 = PI 541420 (1360.001) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale seedling selection
- Virus Lab Assays - Uncertain: PBCVd-2000
- Virus Biological Assays - Negative: M.micromalus-1997 N.Poiteau-1990 Pyronia-1984 V.Crab-1992
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK-Semidwarf, Blooms with Bosc, DIPLOID (flow cytometry)
- OHxF 247 = PI 541422 (1362.001) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale seedling selection
- Virus Biological Assays - Negative: B13-1983 M.micromalus-1997 N.Poiteau-1985 Pyronia-1987 V.Crab-1992
- Traits: ROOTSTOCK, VERY LATE RIPE
- OHxF 257 = PI 541396 (1319.001) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale seedling selection
- Virus Biological Assays - Negative: M.micromalus-1996 N.Poiteau-1985 Pyronia-1985 V.Crab-1992, Uncertain: B13-1983
- Traits: ROOTSTOCK
- OHxF 259 = PI 541423 (1363.001) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale seedling selection
- Virus Biological Assays - Negative: M.micromalus-1999 N.Poiteau-1985 Pyronia-1987 V.Crab-1992
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK, Blooms with Bosc, VERY LATE RIPE
- OHxF 261 = PI 541401 (1324.001) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale seedling selection
- Virus Biological Assays - Negative: B13-1983 N.Poiteau-1985 Pyronia-1987
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK
- OHxF 266 = PI 541424 (1364.001) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale seedling selection
- Virus Biological Assays - Negative: B13-1983 N.Poiteau-1987 P.Crassane-1985 Pyronia-1987
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK, Blooms with Bosc
- OHxF 267 = PI 541400 (1323.001) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale seedling selection
- Virus Biological Assays - Negative: N.Poiteau-1985 Pyronia-1987
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK-Semi-vigorous
- OHxF 280 = PI 541425 (1365.001) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale seedling selection
- Virus Biological Assays - Negative: B13-1983 N.Poiteau-1987 Pyronia-1987 V.Crab-1992, Uncertain: M.micromalus-2001
- Traits: ROOTSTOCK, FIRE BLIGHT SUSCEPTIBLE
- OHxF 282 = PI 541426 (1366.001) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale seedling selection
- Virus Biological Assays - Negative: B13-1983 N.Poiteau-1985
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK
- OHxF 288 = PI 541373 (734.001) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale seedling selection
- Virus Biological Assays - Negative: B13-1983 N.Poiteau-1990 P.Crassane-1985 Pyronia-1987 V.Crab-1991, Uncertain: M.micromalus-2001
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK
- OHxF 319 = PI 541427 (1367.001) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale seedling selection
- Virus Biological Assays - Negative: N.Poiteau-1985 Pyronia-1987
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK
- OHxF 333 = PI 541405 (1572.001) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale seedling selection
- Virus Lab Assays - Negative: PBCVd-2000
- Virus Biological Assays - Negative: M.micromalus-1998 N.Poiteau-1992 P.Crassane-1984 Pyronia-1992
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK-Semidwarf, Blooms with Bosc, DIPLOID (flow cytometry)
- OHxF 340 = PI 541403 (1326.001) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale seedling selection
- Virus Biological Assays - Negative: M.micromalus-1997 N.Poiteau-1988 P.Crassane-1985 Pyronia-1988 V.Crab-1992
- Traits: ROOTSTOCK
- OHxF 361 = PI 541374 (735.001) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale seedling selection
- Virus Biological Assays - Negative: B13-1983 N.Poiteau-1985 P.Crassane-1983 Pyronia-1985 V.Crab-1991
- Traits: ROOTSTOCK-Semi-vigorous, FIRE BLIGHT SUSCEPTIBLE
- OHxF 377 = PI 541428 (1369.001) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale seedling selection
- Virus Biological Assays - Negative: B13-1983 N.Poiteau-1987 Pyronia-1987
- Traits: FIRE BLIGHT RESISTANT ROOTSTOCK
- OHxF 512 = PI 541414 (1344.001) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale seedling selection
- Virus Biological Assays - Negative: N.Poiteau-1993 Pyronia-1993
- Traits: ROOTSTOCK, SCAB RESISTANT, FIRE BLIGHT SUSCEPTIBLE
- OPR-001 = PI 541430 (1375.001) - Pyrus communis ssp. pyraster (L.) Ehrh.
- Pedigree: Seedling of cultivar Anjou
- Virus Biological Assays - Negative: N.Poiteau-1985 Pyronia-1987
- Traits: ROOTSTOCK, SCAB RESISTANT
- OPR-005 OHxF C-44 = PI 617519 (1420.001) - Pyrus hybrid
- Pedigree: Bartlett x (Old Home x Farmingdale)
- Virus Biological Assays - Negative: N.Poiteau-1990 Pyronia-1987
- Traits: ROOTSTOCK
- OPR-013 OHxF C-34 = PI 541368 (1422.001) - Pyrus communis L.
- Pedigree: Old Home x Farmingdale
- Virus Biological Assays - Uncertain: P.Crassane-1984
- Traits: POSSIBLE DWARFING ROOTSTOCK, SCAB RESISTANT
- OPR-110 P. betulifolia No. 1 = PI 540943 (653.001) - Pyrus betulifolia Bunge - VIRUS INFECTED
- Pedigree: Seedling selection from seed collected in China by Reimer
- Virus Biological Assays - Positive: N.Poiteau-1983
- Traits: FIRE BLIGHT RESISTANT ROOTSTOCK
- OPR-111 P. betulifolia No. 2 = PI 540944 (654.001) - Pyrus betulifolia Bunge
- Pedigree: Seedling selection from seed collected in China by Reimer
- Traits: FIRE BLIGHT RESISTANT ROOTSTOCK
- OPR-113 P. betulifolia No. 4 = PI 540945 (655.001) - Pyrus betulifolia Bunge - VIRUS INFECTED
- Pedigree: Seedling selection from seed collected in China by Reimer
- Virus Lab Assays - Negative: PBCVd-2000
- Virus Biological Assays - Positive: M.micromalus-2003, Negative: N.Poiteau-1985 Pyronia-1985 V.Crab-1991
- Traits: FIRE BLIGHT SUSCEPTIBLE ROOTSTOCK, DIPLOID (flow cytometry)
- OPR-114 P. betulifolia No. 5 = PI 540946 (656.001) - Pyrus betulifolia Bunge
- Pedigree: Seedling selection from seed collected in China by Reimer
- Virus Lab Assays - Negative: PNRSV-1990
- Virus Biological Assays - Negative: B13-1983 N.Poiteau-1990 Pyronia-1987, Uncertain: M.micromalus-2001
- Traits: FIRE BLIGHT SUSCEPTIBLE ROOTSTOCK
- OPR-125 P. calleryana = PI 541066 (1314.002) - Pyrus calleryana Decne.
- Pedigree: Seedling selection
- Virus Lab Assays - Negative: PBCVd-2000
- Virus Biological Assays - Negative: MM-2003 NP-1990 PV-1990
- Traits: ROOTSTOCK, DIPLOID (flow cytometry)
- OPR-132 P. calleryana = PI 541079 (1497.001) - Pyrus calleryana Decne.
- Pedigree: Seedling selection
- Virus Biological Assays - Negative: N.Poiteau-1985 Pyronia-1987
- Traits: ROOTSTOCK
- OPR-135 P. calleryana = PI 541085 (1171.003) - Pyrus calleryana Decne.
- Pedigree: Seedling selection
- Virus Biological Assays - Negative: NP-1987 PV-1987
- Traits: ROOTSTOCK
- OPR-138 P. calleryana = PI 541094 (2091.001) - Pyrus calleryana Decne. - VIRUS INFECTED
- Pedigree: Seedling selection
- Virus Biological Assays - Positive: N.Poiteau-1991 Pyronia-1991, Uncertain: VIRUS-2004
- Traits: ROOTSTOCK, LOW CHILL
- OPR-141 = PI 541789 (1373.001) - Pyrus hybrid
- Pedigree: P. ussuriensis x P. pyrifolia hybrid seedling selection
- Virus Biological Assays - Negative: B13-1983 N.Poiteau-1990 Pyronia-1987
- Traits: ROOTSTOCK
- OPR-156 P. calleryana = PI 541089 (2086.001) - Pyrus calleryana Decne.
- Virus Biological Assays - Negative: N.Poiteau-2003
- Traits: ROOTSTOCK
- OPR-157 P. calleryana = PI 541012 (1170.002) - Pyrus calleryana Decne.
- Virus Biological Assays - Negative: NP-1990
- Traits: ROOTSTOCK
- OPR-168 P. calleryana = PI 617520 (1427.001) - Pyrus calleryana Decne. - VIRUS INFECTED
- Pedigree: Seedling selection
- Virus Biological Assays - Positive: N.Poiteau-1985 P.Crassane-1985 Vein Yellows-1985
- Traits: ROOTSTOCK, LOW CHILL
- OPR-177 P. calleryana = PI 541072 (1436.001) - Pyrus calleryana Decne. - VIRUS INFECTED
- Pedigree: Seedling selection
- Virus Biological Assays - Positive: N.Poiteau-1993 Vein Yellows-1985, Negative: Pyronia-1985
- Traits: ROOTSTOCK
- OPR-187 P. calleryana = PI 541092 (2089.001) - Pyrus calleryana Decne.
- Virus Biological Assays - Negative: N.Poiteau-2002, Uncertain: Pyronia-2002
- Traits: ROOTSTOCK, LOW CHILL
- OPR-191 P. calleryana = PI 541074 (1438.001) - Pyrus calleryana Decne. - VIRUS INFECTED
- Pedigree: Seedling selection
- Virus Biological Assays - Positive: N.Poiteau-1985 Pyronia-1985
- Traits: ROOTSTOCK
- OPR-193 P. calleryana = PI 541068 (1432.001) - Pyrus calleryana Decne. - VIRUS INFECTED
- Pedigree: Seedling selection
- Virus Biological Assays - Positive: N.Poiteau-1985
- Traits: ROOTSTOCK, LOW CHILL
- OPR-195 P. calleryana 6 OP = PI 541076 (1440.001) - Pyrus calleryana Decne.
- Pedigree: Seedling selection
- Virus Biological Assays - Negative: B13-1983 N.Poiteau-1985 Pyronia-1987 V.Crab-1991, Uncertain: M.micromalus-2001
- Traits: ROOTSTOCK
- OPR-211 P. calleryana (?) = PI 541101 (2098.001) - Pyrus calleryana Decne.
- Traits: ROOTSTOCK
- OPR-220 P. calleryana = PI 541098 (2095.001) - Pyrus calleryana Decne. - VIRUS INFECTED
- Virus Biological Assays - Positive: Pyronia-1999
- Traits: ROOTSTOCK
- OPR-249 P. calleryana = PI 541070 (1434.001) - Pyrus calleryana Decne. - VIRUS INFECTED
- Pedigree: Seedling selection
- Virus Biological Assays - Positive: Pyronia-1985, Uncertain: N.Poiteau-1993
- Traits: ROOTSTOCK
- OPR-259 P. betulifolia = PI 540981 (1378.001) - Pyrus betulifolia Bunge
- Pedigree: P. betulifolia No. 3 seedling selection
- Virus Biological Assays - Negative: M.micromalus-2001 N.Poiteau-1987 Pyronia-1985
- Traits: CROWN GALL RESISTANT ROOTSTOCK
- OPR-260 P. betulifolia = PI 540982 (1379.001) - Pyrus betulifolia Bunge
- Pedigree: P. betulifolia No. 3 seedling selection
- Virus Biological Assays - Negative: B13-1983 N.Poiteau-1987 Pyronia-1985
- Traits: CROWN GALL RESISTANT ROOTSTOCK
- OPR-261 P. betulifolia = PI 540983 (1380.001) - Pyrus betulifolia Bunge
- Pedigree: P. betulifolia No. 3 seedling selection
- Virus Biological Assays - Negative: N.Poiteau-1985 Pyronia-1987
- Traits: CROWN GALL RESISTANT ROOTSTOCK
- OPR-262 P. betulifolia = PI 540984 (1381.001) - Pyrus betulifolia Bunge
- Pedigree: P. betulifolia No. 3 seedling selection
- Virus Biological Assays - Negative: B13-1983 N.Poiteau-1985 Pyronia-1987
- Traits: CROWN GALL RESISTANT ROOTSTOCK
- OPR-263 P. betulifolia = PI 540985 (1382.001) - Pyrus betulifolia Bunge
- Pedigree: P. betulifolia No. 3 seedling selection
- Virus Biological Assays - Negative: B13-1983 N.Poiteau-1985 Pyronia-1991
- Traits: CROWN GALL RESISTANT ROOTSTOCK
- OPR-264 P. betulifolia = PI 540986 (1383.001) - Pyrus betulifolia Bunge
- Pedigree: P. betulifolia No. 3 seedling selection from Asian seedlot
- Virus Biological Assays - Negative: B13-1983 M.micromalus-1999 N.Poiteau-1985 Pyronia-1985 V.Crab-1992
- Traits: CROWN GALL RESISTANT ROOTSTOCK
- OPR-265 P. betulifolia = PI 540987 (1384.001) - Pyrus betulifolia Bunge
- Pedigree: P. betulifolia No. 3 seedling selection
- Virus Biological Assays - Negative: N.Poiteau-1987 Pyronia-1985
- Traits: CROWN GALL RESISTANT ROOTSTOCK
- OPR-266 P. betulifolia = PI 540988 (1385.001) - Pyrus betulifolia Bunge
- Pedigree: P. betulifolia No. 3 seedling selection
- Virus Biological Assays - Negative: B13-1983 N.Poiteau-1985 Pyronia-1987
- Traits: CROWN GALL RESISTANT ROOTSTOCK
- OPR-268 P. calleryana = PI 541025 (667.001) - Pyrus calleryana Decne. - VIRUS INFECTED
- Pedigree: P. calleryana seedling selection
- Virus Biological Assays - Positive: B13-1983 Vein Yellows-1985, Uncertain: N.Poiteau-1985
- Traits: ROOTSTOCK
- 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)
- Old Home x P. betulifolia-1 = PI 541788 (1371.001) - Pyrus hybrid
- Pedigree: Old Home x P. betulaefolia-1
- Virus Biological Assays - Negative: N.Poiteau-1990 Pyronia-1987, Uncertain: B13-1983
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK, SCAB RESISTANT
- P-12 fire blight resistant rootstock = PI 541294 (715.002) - Pyrus communis L.
- Pedigree: Seedling selection
- Virus Biological Assays - Negative: NP-1987 PV-1990
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK, SCAB RESISTANT
- P-18 (Oregon 18) fire blight resistant rootstock = PI 541295 (716.001) - Pyrus communis ssp. pyraster (L.) Ehrh. - VIRUS INFECTED
- Pedigree: Open-pollinated French P. communis seedling selection
- Virus Biological Assays - Positive: B13-1983 P.Crassane-1983 Vein Yellows-1985
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK
- P-61 fire blight resistant rootstock = PI 541429 (1374.004) - Pyrus communis ssp. pyraster (L.) Ehrh.
- Pedigree: Seedling selection
- Virus Biological Assays - Negative: MM-1996 NP-1995 PV-1995
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK
- P-70 fire blight resistant rootstock = PI 541296 (722.002) - Pyrus communis L.
- Pedigree: Seedling selection
- Virus Biological Assays - Negative: NP-1990 PV-1989, Uncertain: MM-2001
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK, Blooms with Bartlett
- P-79 fire blight resistant rootstock = PI 541297 (723.002) - Pyrus communis L.
- Pedigree: Seedling selection
- Virus Biological Assays - Negative: MM-2001 NP-1990
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK
- P-79 x P. betulifolia = PI 541780 (1348.001) - Pyrus hybrid
- Pedigree: P-79 x P. betulaefolia seedling selection
- Virus Biological Assays - Negative: B13-1983 M.micromalus-1996 N.Poiteau-1988 P.Crassane-1985 Pyronia-1988
- Traits: ROOTSTOCK
- P-87 fire blight resistant rootstock = PI 541298 (724.001) - Pyrus communis ssp. pyraster (L.) Ehrh.
- Pedigree: Seedling selection
- Virus Biological Assays - Negative: N.Poiteau-1985 Pyronia-1988, Uncertain: M.micromalus-2001
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK
- P. betulifolia = PI 540944 (658.001)
- Pedigree: Seedling selection from seed collected in China by Reimer
- Virus Biological Assays - Negative: N.Poiteau-1995 Pyronia-1987
- Traits: ROOTSTOCK
- P. betulifolia x P. calleryana-5 = PI 541783 (1353.001)
- Pedigree: P. betulaefolia-2 x P. calleryana-5 seedling selection
- Virus Biological Assays - Negative: N.Poiteau-1985
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK
- P. betulifolia-1 x P-12 = PI 541790 (1376.001)
- Pedigree: P. betulaefolia-1 x P-12 seedling selection
- Virus Biological Assays - Negative: B13-1983 N.Poiteau-1990 Pyronia-1987
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK
- P. betulifolia-1 x P-79 = PI 541791 (1377.001)
- Pedigree: P. betulaefolia-1 x P-79 seedling selection
- Virus Biological Assays - Negative: N.Poiteau-1990 Pyronia-1987 V.Crab-1992
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK
- P. betulifolia-2 x Farmingdale = PI 541785 (1357.001)
- Pedigree: P. betulifolia-2 x Farmingdale
- Virus Biological Assays - Negative: B13-1983 N.Poiteau-1990 Pyronia-1987
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK
- P. betulifolia-2 x P-12 = PI 541784 (1355.001)
- Pedigree: P. betuifolia-2 x P-12 seedling selection
- Virus Biological Assays - Negative: N.Poiteau-1990 Pyronia-1987
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK
- P. betulifolia-2 x P. betulifolia-1 = PI 540994 (1485.001)
- Pedigree: P. betulifolia-2 x P. betulifolia-1 seedling selection B
- Virus Biological Assays - Negative: N.Poiteau-1985 Pyronia-1987
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK
- P. calleryana (hybrid) = PI 541084 (1614.001) - VIRUS INFECTED
- Pedigree: Seedling selection from OP seed
- Virus Biological Assays - Positive: BARK problem-2003 Vein Yellows-1986, Negative: N.Poiteau-1993 Pyronia-1993
- Traits: ROOTSTOCK
- P. calleryana - Crown Point 5-67 = PI 541082 (1587.003)
- Pedigree: Rootstock propagated from productive orchard tree from Crown Point orchard, Medford area
- Virus Biological Assays - Negative: NP-1996 PV-1996
- Traits: ROOTSTOCK, LOW CHILL
- P. calleryana D6 = PI 214185 (665.001)
- Pedigree: Origially collected from the wild in S. China
- Virus Biological Assays - Negative: B13-1983 N.Poiteau-1985
- Traits: ROOTSTOCK, LOW CHILL
- P. calleryana [C-44?] = PI 541073 (1437.001) - VIRUS INFECTED
- Pedigree: Seedling selection from Asian seedlot
- Virus Biological Assays - Positive: B13-1983 N.Poiteau-2002
- Traits: ROOTSTOCK
- P. communis OHxF? = PI 541434 (1421.001)
- Pedigree: Old Home x Farmingdale (?)
- Virus Biological Assays - Negative: N.Poiteau-1985 Pyronia-1987
- Traits: ROOTSTOCK
- P. communis hybrid KAZ 95-05-04 - Kazakhstan = PI 617623 (2551.006)
- Traits: ROOTSTOCK POTENTIAL, precocious, open tree habit
- P. communis ssp. caucasica F-25 = PI 541957 (686.002)
- Virus Biological Assays - Negative: NP-1987 PV-1990, Uncertain: MM-2001
- Traits: ROOTSTOCK
- P. communis ssp. caucasica GE-2004-131 - Georgia, Kharagauli = PI 641300 (2844.004)
- Pedigree: Collected in the wild in Republic of Georgia.
- Traits: ROOTSTOCK POTENTIAL - spreading habit, precocious
- P. dimorphophylla x P. calleryana = PI 541731 (759.001)
- Pedigree: P. dimorphylla x P. calleryana
- Virus Biological Assays - Negative: B13-1983 N.Poiteau-1990 Pyronia-1987
- Traits: ROOTSTOCK, Potential Anjou Pollenizer
- P. fauriei Rootstock Selection 12-14 = PI 541652 (1496.001)
- Pedigree: Seedling selection from Korean seedlot
- Virus Biological Assays - Negative: B13-1983 N.Poiteau-1985 P.Crassane-1985 Pyronia-1987 V.Crab-1988
- Traits: ROOTSTOCK
- P. pashia x P. calleryana = PI 541773 (1294.001)
- Pedigree: P. pashia x P. calleryana
- Virus Biological Assays - Negative: N.Poiteau-1990 P.Crassane-1985 Pyronia-1988
- Traits: ROOTSTOCK
- P. pashia x P. calleryana = PI 541797 (1474.001)
- Pedigree: P. pashia x P. calleryana
- Virus Biological Assays - Negative: B13-1983 N.Poiteau-1990 Pyronia-1987 V.Crab-1992
- Traits: ROOTSTOCK
- P. salicifolia (hybrid) - Russia = PI 541953 (1697.005)
- Pedigree: Collected from the wild in the Soviet Union
- Traits: ROOTSTOCK POTENTIAL, precocious, open tree habit
- Saprani I (P. pyrifolia) = PI 506375 (1686.001) - Pyrus pyrifolia (Burm. f.) Nakai
- Virus Biological Assays - Negative: M.micromalus-1996 N.Poiteau-1987 Pyronia-1987 V.Crab-1992
- Traits: ROOTSTOCK, DIPLOID (flow cytometry 2012)
- Saprani II = PI 506376 (1673.001) - Pyrus hybrid
- Virus Biological Assays - Negative: N.Poiteau-1987 Pyronia-1987
- Traits: ROOTSTOCK, DIPLOID (flow cytometry 2012)
- Sbkta (P. elaeagrifolia) = PI 502179 (1639.001) - Pyrus hybrid
- Pedigree: P. communis x P. nivalis hybrid
- Virus Lab Assays - Negative: PBCVd-2000
- Virus Biological Assays - Negative: M.micromalus-1998 N.Poiteau-2003 Pyronia-1988 V.Crab-1991
- Traits: ROOTSTOCK, DIPLOID (flow cytometry)
- Syan Li = PI 654960 (2786.001) - Pyrus ×bretschneideri Rehder
- Pedigree: Recived from Kazakhstan, where they are used as pear rootstocks. Originated in China.
- Virus Biological Assays - Negative: NP-2003
- Traits: ROOTSTOCK, DIPLOID (flow cytometry 2012)
- Uzhi Li = PI 654958 (2784.001) - Pyrus ussuriensis Maxim. - VIRUS INFECTED
- Pedigree: Recived from Kazakhstan, where they are used as pear rootstocks. Originated in China.
- Virus Biological Assays - Positive: NP-2003
- Traits: SCAB RESISTANT, ROOTSTOCK, DIPLOID (flow cytometry 2012)
- W-1 fire blight resistant rootstock = PI 541279 (597.002) - Pyrus communis L.
- Pedigree: Seedling selection
- Virus Biological Assays - Negative: NP-1990 PV-1987
- Traits: FIRE BLIGHT RESISTANT, ROOTSTOCK, DIPLOID (flow cytometry 2012)
- Willard = PI 541356 (1160.001) - Pyrus communis L.
- Pedigree: Bartlett x Dorset
- Virus Biological Assays - Negative: Bosc-1989 N.Poiteau-1987 P.Crassane-1985 Pyronia-1988
- Traits: LATE RIPE, ROOTSTOCK, DIPLOID (flow cytometry 2012)