NCGR-Corvallis Pyrus Catalog

Fire Blight Resistant 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: 01 April 2009

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. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, COLD HARDY, EARLY RIPE
• Autumn Blaze (P. calleryana) = PI 541075 (1439.001) - Pyrus calleryana Decne. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, EARLY BLOOM, ORNAMENTAL, MILDEW RESISTANT, LOW CHILL, DIPLOID (flow cytometry)
• Ayer = PI 541120 (26.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT
• Ayers = PI 541722 (1059.005) - Pyrus hybrid - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, SCAB RESISTANT, ATTRACTIVE, SIMILAR TO SECKEL
• Ba Li Xiang [Ba Li Hsiang] = PI 541985 (27.002) - Pyrus ussuriensis Maxim. - VIRUS INFECTED
  - VERY LATE RIPE, FIRE BLIGHT RESISTANT, MILDEW RESISTANT, ROOTSTOCK, SCAB RESISTANT, DIPLOID (flow cytometry)
• Bantam = PI 617554 (2371.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT
• Burkett = PI 541154 (109.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT
• Burkett x P. betulifolia = PI 541786 (1358.001) - Pyrus hybrid - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK, SCAB RESISTANT
• Campas No.1 = PI 541705 (124.002) - Pyrus hybrid - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, LOW CHILL
• Campas No.2 = PI 541706 (125.003) - Pyrus hybrid - VIRUS TESTED
  - VERY LATE RIPE, FIRE BLIGHT RESISTANT, LOW CHILL
• Canner (Waite?) = PI 541159 (128.002) - Pyrus hybrid - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, SCAB RESISTANT
• Carrick = PI 617573 (2456.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, LOW CHILL
• Cayuga = PI 541160 (129.002) - Pyrus hybrid - VIRUS TESTED
  - FIRE BLIGHT RESISTANT
• Chanticleer (P. calleryana) = PI 541105 (2186.001) - Pyrus calleryana Decne. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ORNAMENTAL, LOW CHILL, DIPLOID (flow cytometry)
• Cincincis = PI 541707 (138.001) - Pyrus hybrid - VIRUS TESTED
  - LATE RIPE, FIRE BLIGHT RESISTANT
• Da Tou Huang [Ta Tau Huang] = PI 542002 (562.003) - Pyrus ussuriensis Maxim.
  - FIRE BLIGHT RESISTANT
• Dabney = PI 541306 (164.001) - Pyrus communis hybrid - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, QUINCE COMPATIBLE , PHS Favorite 2005
• Dixie = PI 541708 (175.002) - Pyrus hybrid - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, LOW CHILL
• Douglas = PI 541723 (1083.001) - Pyrus hybrid - VIRUS TESTED
  - LATE RIPE, FIRE BLIGHT RESISTANT
• Duchesse Bronzee = PI 541179 (193.004) - Pyrus communis L. - VIRUS TESTED
  - LATE RIPE, FIRE BLIGHT RESISTANT, QUINCE COMPATIBLE
• Duchesse d'Angouleme = PI 541303 (17.001) - Pyrus communis L. - VIRUS TESTED
  - LATE RIPE, FIRE BLIGHT RESISTANT, QUINCE COMPATIBLE, DIPLOID (flow cytometry)
• Duchesse d'Angouleme Bronzee = PI 541336 (1087.002) - Pyrus communis L. - VIRUS TESTED
  - LATE RIPE, FIRE BLIGHT RESISTANT, QUINCE COMPATIBLE
• Early Harvest (=Chambers) = PI 541183 (202.003) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, EARLY RIPE, DIPLOID (flow cytometry)
• El Dorado = PI 541388 (1168.001) - Pyrus communis L. - VIRUS TESTED
  - LATE RIPE, FIRE BLIGHT RESISTANT
• Estella = PI 541709 (216.002) - Pyrus hybrid - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK
• Eureka = PI 541710 (217.004) - Pyrus hybrid - VIRUS TESTED
  - LATE RIPE, FIRE BLIGHT RESISTANT
• Farmingdale = PI 541188 (221.001) - Pyrus communis L. - VIRUS TESTED
  - LATE RIPE, FIRE BLIGHT RESISTANT, DIPLOID (flow cytometry)
• Garber = PI 541711 (239.002) - Pyrus hybrid - VIRUS TESTED
  - VERY LATE RIPE, FIRE BLIGHT RESISTANT, LOW CHILL
• Good Christian = PI 541712 (250.003) - Pyrus hybrid - VIRUS TESTED
  - LATE RIPE, LOW CHILL, FIRE BLIGHT RESISTANT
• Greisa No.1 = PI 541713 (255.001) - Pyrus hybrid - VIRUS TESTED
  - FIRE BLIGHT RESISTANT
• H 6831/1.12 (=HW 605?) = PI 541200 (261.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT
• HW 600 (Harrow, Ontario) = PI 541339 (1096.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT
• HW 601 (Harrow, Ontario) = PI 541202 (264.002) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT
• Harbin (P. ussuriensis) = PI 542019 (1318.001) - Pyrus ussuriensis Maxim. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, COLD HARDY, MILDEW RESISTANT, DIPLOID (flow cytometry)
• Harrow Delight = PI 541431 (1404.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, QUINCE COMPATIBLE, COLD HARDY (fruited in Anchorage)
• Hawaii = PI 541897 (270.001) - Pyrus pyrifolia (Burm. f.) Nakai - VIRUS TESTED
  - LATE RIPE, FIRE BLIGHT RESISTANT, SCAB RESISTANT
• Higdon = PI 617657 (2602.001) - Pyrus sp. - VIRUS INFECTED
  - LOW CHILL, FIRE BLIGHT RESISTANT
• Honeysweet = PI 541320 (280.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT
• Hood = PI 541311 (281.001) - Pyrus hybrid - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, LOW CHILL 260 hrs, DIPLOID (flow cytometry), apparently SELF-FERTILE, SCAB RESISTANT (Australia)
• Hoskins = PI 541208 (284.001) - Pyrus communis L. - VIRUS TESTED
  - VERY LATE RIPE, FIRE BLIGHT RESISTANT
• Huangxianshui Li [Huang Hsing Sui Li] = PI 541990 (288.002) - Pyrus ussuriensis Maxim. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, SCAB RESISTANT
• Hung Li = PI 541993 (291.001) - Pyrus ussuriensis Maxim. - VIRUS INFECTED
  - LATE RIPE, FIRE BLIGHT RESISTANT, DIPLOID (flow cytometry)
• Kieffer = PI 541714 (1166.001) - Pyrus hybrid - VIRUS TESTED
  - LATE RIPE, FIRE BLIGHT RESISTANT, LOW CHILL 680 hrs, QUINCE COMPATIBLE, DIPLOID (flow cytometry)
• Krylov = PI 127715 (1106.001) - Pyrus hybrid - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, COLD HARDY, MILDEW RESISTANT, SCAB RESISTANT, DIPLOID (flow cytometry)
• Lao Suan Li [Lo Suan Li] = PI 541994 (355.001) - Pyrus ussuriensis Maxim. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT
• Lemon = PI 541215 (346.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT
• Lincoln = PI 541217 (354.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT
• Longworth = PI 541219 (357.003) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT
• Luscious = PI 541322 (367.001) - Pyrus communis L. - VIRUS TESTED
  - COLD HARDY (fruited in Anchorage), MILDEW RESISTANT, SCAB RESISTANT, LOW CHILL , FIRE BLIGHT RESISTANT, DIPLOID (flow cy
• Mac = PI 541343 (1111.004) - Pyrus communis L. - VIRUS INFECTED
  - FIRE BLIGHT RESISTANT, MID RIPE
• Magness = PI 541299 (1167.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, SCAB RESISTANT, QUINCE COMPATIBLE, CYTOPLASMIC MALE STERILITY, DIPLOID (flow cytometry)
• Man Yuan Xiang [Man Yuan Hsiang] = PI 541996 (378.002) - Pyrus ussuriensis Maxim. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, SCAB RESISTANT
• Manning-Miller = PI 541480 (2296.002) - Pyrus communis L. - VIRUS TESTED
  - COLD HARDY, SCAB RESISTANT, FIRE BLIGHT RESISTANT
• Maxine = PI 541231 (547.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, MILDEW RESISTANT, QUINCE COMPATIBLE, DIPLOID (flow cytometry)
• Merricourt = PI 541345 (1120.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT
• Mien Suan Li = PI 542006 (1121.001) - Pyrus ussuriensis Maxim. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT
• Miney = PI 617572 (2455.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, COLD HARDY
• Mississippi US 3-10-5 = PI 541346 (1122.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, LOW CHILL
• Moe = PI 541347 (1124.003) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, COLD HARDY
• Monterrey = PI 541903 (1125.004) - Pyrus hybrid - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, LOW CHILL, MILDEW RESISTANT, SCAB RESISTANT, DIPLOID (flow cytometry)
• Mooers = PI 541314 (398.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT
• Moonglow = PI 541315 (399.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, DIPLOID (flow cytometry)
• Morgan = PI 617549 (2363.001) - Pyrus communis L.
  - FIRE BLIGHT RESISTANT, SCAB RESISTANT
• NY 10262 = PI 541807 (1658.001) - Pyrus hybrid - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, PSYLLA RESISTANT
• NY 10353 = PI 541809 (1660.001) - Pyrus hybrid - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, PSYLLA RESISTANT, MILDEW RESISTANT, DIPLOID (flow cytometry)
• NY 10355 = PI 541808 (1659.001) - Pyrus hybrid - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, PSYLLA RESISTANT
• OH 20 fire blight resistant rootstock = PI 541237 (425.007) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK
• OH 50 fire blight resistant rootstock = PI 541238 (427.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK
• OHxF 4 = PI 541409 (1337.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK
• OHxF 5 = PI 541410 (1338.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK
• OHxF 18 = PI 541397 (1320.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK-Vigorous
• OHxF 29 = PI 541398 (1321.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK
• OHxF 40 = PI 541402 (1325.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK-Productive
• OHxF 97 = PI 541370 (726.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK-Vigorous, Productive, DIPLOID (flow cytometry)
• OHxF 101 = PI 541416 (1350.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK, Blooms with Bartlett
• OHxF 109 = PI 541417 (1351.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK
• OHxF 112 = PI 541418 (1354.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK-Vigorous
• OHxF 130 = PI 541406 (1330.002) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK
• OHxF 132 = PI 541404 (1327.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK
• OHxF 198 = PI 541419 (1359.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK-Vigorous
• OHxF 217 = PI 541371 (732.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK-Semi-vigorous, Blooms with Bosc
• OHxF 230 = PI 541420 (1360.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK-Semidwarf, Blooms with Bosc, DIPLOID (flow cytometry)
• OHxF 259 = PI 541423 (1363.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK, Blooms with Bosc
• OHxF 261 = PI 541401 (1324.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK
• OHxF 266 = PI 541424 (1364.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK, Blooms with Bosc
• OHxF 267 = PI 541400 (1323.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK-Semi-vigorous
• OHxF 282 = PI 541426 (1366.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK
• OHxF 288 = PI 541373 (734.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK
• OHxF 319 = PI 541427 (1367.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK
• OHxF 333 = PI 541405 (1572.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK-Semidwarf, Blooms with Bosc, DIPLOID (flow cytometry)
• OHxF 377 = PI 541428 (1369.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK
• Okolo = PI 541908 (1185.001) - Pyrus pyrifolia (Burm. f.) Nakai - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, COLD HARDY, SCAB RESISTANT
• Old Home = PI 541456 (431.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK, QUINCE COMPATIBLE, DIPLOID (flow cytometry)
• Old Home x P. betulifolia-1 = PI 541787 (1370.001) - Pyrus hybrid - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, SCAB RESISTANT
• Old Home x P. betulifolia-1 = PI 541788 (1371.001) - Pyrus hybrid - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK, SCAB RESISTANT
• Olia = PI 143979 (1130.001) - Pyrus hybrid - VIRUS INFECTED
  - COLD HARDY, FIRE BLIGHT RESISTANT
• Orel No. 15 = PI 541239 (433.002) - Pyrus hybrid - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, EARLY RIPE, COLD HARDY, Blooms with Bosc
• Orient = PI 541954 (434.007) - Pyrus hybrid - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, LOW CHILL 680 hrs
• P-12 fire blight resistant rootstock = PI 541294 (715.002) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK PERRY?, SCAB RESISTANT
• P-18 (Oregon 18) blight resistant rootstock = PI 541295 (716.001) - Pyrus communis L. - VIRUS INFECTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK
• P-61 fire blight resistant rootstock = PI 541429 (1374.004) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK
• P-70 fire blight resistant rootstock = PI 541296 (722.002) - Pyrus communis L.
  - FIRE BLIGHT RESISTANT, ROOTSTOCK, Blooms with Bartlett
• P-79 fire blight resistant rootstock = PI 541297 (723.002) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK
• P-87 fire blight resistant rootstock = PI 541298 (724.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK
• P. betulifolia = PI 540978 (1311.001) - VIRUS INFECTED
  - FIRE BLIGHT RESISTANT
• P. betulifolia x P. calleryana-5 = PI 541783 (1353.001) - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK
• P. betulifolia-1 x P-12 = PI 541790 (1376.001) - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK
• P. betulifolia-1 x P-79 = PI 541791 (1377.001) - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK
• P. betulifolia-2 x Farmingdale = PI 541785 (1357.001) - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK
• P. betulifolia-2 x P-12 = PI 541784 (1355.001) - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK
• P. betulifolia-2 x P. betulifolia-1 = PI 540994 (1485.001) - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK
• P. calleryana = PI 541021 (663.001) - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, MILDEW RESISTANT, DIPLOID (flow cytometry)
• P. calleryana = PI 541009 (666.001) - VIRUS TESTED
  - FIRE BLIGHT RESISTANT
• P. calleryana OSU-2 = PI 541053 (1264.003) - VIRUS TESTED
  - FIRE BLIGHT RESISTANT
• P. calleryana OSU-3 = PI 541054 (1265.003) - VIRUS TESTED
  - FIRE BLIGHT RESISTANT
• P. calleryana OSU-5 = PI 541055 (1266.002) - VIRUS TESTED
  - FIRE BLIGHT RESISTANT
• P. calleryana OSU-6 = PI 541056 (1267.001) - VIRUS TESTED
  - FIRE BLIGHT RESISTANT
• P. calleryana OSU-7 = PI 541057 (1268.002) - VIRUS TESTED
  - FIRE BLIGHT RESISTANT
• P. calleryana OSU-8 = PI 541058 (1269.002) - VIRUS TESTED
  - FIRE BLIGHT RESISTANT
• P. calleryana OSU-9 = PI 541059 (1270.001) - VIRUS TESTED
  - FIRE BLIGHT RESISTANT
• P. communis - Turkey (Olez 5) = PI 541291 (693.001) - VIRUS TESTED
  - FIRE BLIGHT RESISTANT
• P. communis subsp. caucasica Mag 1 - Pyatigorsk, Russia = PI 541290 (691.001) - VIRUS INFECTED
  - FIRE BLIGHT RESISTANT
• P. communis subsp. caucasica Mag 5 - Pyatigorsk, Russia = PI 541560 (692.001) - VIRUS TESTED
  - FIRE BLIGHT RESISTANT
• P. elaeagrifolia = PI 541615 (770.001) - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ORNAMENTAL
• P. elaeagrifolia - Turkey (Olez 2) = PI 541614 (769.001) - VIRUS TESTED
  - FIRE BLIGHT RESISTANT
• P. koehnei (pure) = PI 541832 (818.001) - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, LOW CHILL, DIPLOID (flow cytometry)
• P. nivalis P-91 (pure) = PI 541859 (725.002) - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, PERRY?, DIPLOID (flow cytometry)
• P. spinosa (amygdaliformis) - Greece = PI 540922 (639.001) - VIRUS TESTED
  - FIRE BLIGHT RESISTANT
• Pai Li (Beijing White Pear) = PI 541998 (439.001) - Pyrus ussuriensis Maxim. - VIRUS TESTED
  - LATE RIPE, FIRE BLIGHT RESISTANT, MILDEW RESISTANT, SCAB RESISTANT, DIPLOID (flow cytometry)
• Pontotoc = PI 541726 (1135.001) - Pyrus hybrid - VIRUS TESTED
  - LATE RIPE, FIRE BLIGHT RESISTANT, LOW CHILL
• Potomac = PI 617594 (2518.001) - Pyrus communis L. - VIRUS TESTED
  - LATE RIPE, FIRE BLIGHT RESISTANT, DIPLOID (flow cytometry)
• Richard Peters = PI 541715 (486.004) - Pyrus hybrid - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, LOW CHILL
• Saint Andre = PI 541259 (508.001) - Pyrus communis L. - VIRUS INFECTED
  - FIRE BLIGHT RESISTANT, QUINCE COMPATIBLE
• Seckel = PI 541262 (519.001) - Pyrus communis L.
  - FIRE BLIGHT RESISTANT, DIPLOID (flow cytometry), apparently SELF-FERTILE
• Seuri Li = PI 541904 (1173.002) - Pyrus pyrifolia (Burm. f.) Nakai - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, MILDEW RESISTANT, DIPLOID (flow cytometry)
• Shinko = PI 352635 (526.002) - Pyrus pyrifolia (Burm. f.) Nakai - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, BLACK SPOT RESISTANT, SCAB RESISTANT, DIPLOID (flow cytometry)
• Singo (=Niitaka) = PI 654919 (2447.002) - Pyrus pyrifolia (Burm. f.) Nakai - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, SCAB RESISTANT
• Snyder = PI 541264 (536.002) - Pyrus communis L. - VIRUS TESTED
  - LATE RIPE, FIRE BLIGHT RESISTANT
• Sodak = PI 541727 (1144.001) - Pyrus hybrid - VIRUS TESTED
  - FIRE BLIGHT RESISTANT
• Southworth = PI 541350 (1145.003) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, COLD HARDY, apparently SELF-FERTILE
• Spalding = PI 617548 (2362.001) - Pyrus hybrid - VIRUS TESTED
  - LOW CHILL, FIRE BLIGHT RESISTANT, apparently SELF-FERTILE
• Suan Li = PI 44151 (1148.001) - Pyrus ussuriensis Maxim. - VIRUS TESTED
  - LATE RIPE, FIRE BLIGHT RESISTANT
• Sucre Verte = PI 541269 (553.002) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ANCIENT
• Sudduth (=Burkett) = PI 142477 (1149.002) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT
• Tang Li ID? = PI 542024 (1184.002) - Pyrus ussuriensis Maxim. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, MILDEW RESISTANT, SCAB RESISTANT, DIPLOID (flow cytometry)
• Tennessee = PI 617601 (2525.001) - Pyrus hybrid - VIRUS INFECTED
  - LATE RIPE, FIRE BLIGHT RESISTANT, LOW CHILL 500 hrs
• Tse Li = PI 312509 (584.001) - Pyrus ussuriensis Maxim. - VIRUS TESTED
  - LATE RIPE, ANCIENT, LOW CHILL 500 hrs, FIRE BLIGHT RESISTANT, PSYLLA RESISTANT, DIPLOID (flow cytometry)
• Tsu Li = PI 542023 (1177.001) - Pyrus ussuriensis Maxim. - VIRUS INFECTED
  - LATE RIPE, ANCIENT, LOW CHILL 500 hrs, FIRE BLIGHT RESISTANT, PSYLLA RESISTANT, DIPLOID (flow cytometry)
• Tsu Li = PI 654922 (2443.001) - Pyrus ussuriensis Maxim. - VIRUS INFECTED
  - ANCIENT, LOW CHILL 500 hrs, FIRE BLIGHT RESISTANT, PSYLLA RESISTANT
• Tsu Li No. 2 = PI 654922 (2443.002) - Pyrus ussuriensis Maxim. - VIRUS TESTED
  - ANCIENT, LOW CHILL 500 hrs, FIRE BLIGHT RESISTANT, PSYLLA RESISTANT
• Tyson = PI 541506 (2332.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, QUINCE COMPATIBLE
• Variolosa (P. pashia hyb.) = PI 541717 (589.002) - Pyrus pashia Buch.-Ham. ex D. Don - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, SCAB RESISTANT, DIPLOID (flow cytometry)
• W-1 fire blight resistant rootstock = PI 541279 (597.002) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, ROOTSTOCK
• Waite (Canner) = PI 66131 (598.001) - Pyrus hybrid - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, DIPLOID (flow cytometry)
• Warner = PI 541280 (599.001) - Pyrus communis L. - VIRUS INFECTED
  - FIRE BLIGHT RESISTANT
• Warren = PI 541448 (1582.001) - Pyrus communis L. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, LOW CHILL, QUINCE COMPATIBLE
• Xiangshui Li [Hsiang Sui-Li] = PI 542022 (1617.002) - Pyrus ussuriensis Maxim. - VIRUS TESTED
  - FIRE BLIGHT RESISTANT, MILDEW RESISTANT, SCAB RESISTANT, DIPLOID (flow cytometry)
• Ya Li = PI 506362 (1678.001) - Pyrus ussuriensis Maxim. - VIRUS TESTED
  - LATE RIPE, FIRE BLIGHT RESISTANT, LOW CHILL 500 hrs, PSYLLA RESISTANT, MILDEW RESISTANT, DIPLOID (flow cytometry), SCAB RESISTANT (Australia)