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Search for electron-antineutrinos associated with gravitational-wave events GW150914,GW151012,GW151226,GW170104,GW170608,GW170814,and GW170817 at Daya Bay

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Chinese Physics C 2021年第5期45卷 190-201页

作者： F.P.An A.B.Balantekin H.R.Band m.Bishai S.Blyth G.F.Cao J.Cao J.F.Chang Y.Chang H.S.Chen S.m.Chen Y.Chen Y.X.Chen J.Cheng Z.K.Cheng J.J.Cherwinka m.C.Chu J.P.Cummings O.Dalager F.S.Deng Y.Y.Ding m.V.Diwan T.Dohnal J.Dove m.dvorak D.A.Dwyer J.P.Gallo m.Gonchar G.H.Gong H.Gong W.Q.Gu J.Y.Guo L.Guo X.H.Guo Y.H.Guo Z.Guo R.W.Hackenburg S.Hans m.He K.m.Heeger Y.K.Heng A.Higuera Y.K.Hor Y.B.Hsiung B.Z.Hu J.R.Hu T.Hu Z.J.Hu H.X.Huang X.T.Huang Y.B.Huang P.Huber D.E.Jaffe K.L.Jen X.L.Ji X.P.Ji R.A.Johnson D.Jones L.Kang S.H.Kettell S.Kohn m.Kramer T.J.Langford J.Lee J.H.C.Lee R.T.Lei R.Leitner J.K.C.Leung F.Li J.J.Li Q.J.Li S.Li S.C.Li W.D.Li X.N.Li X.Q.Li Y.F.Li Z.B.Li H.Liang C.J.Lin G.L.Lin S.Lin J.J.Ling J.m.Link L.Littenberg B.R.Littlejohn J.C.Liu J.L.Liu C.Lu H.Q.Lu J.S.Lu K.B.Luk X.B.ma X.Y.ma Y.Q.ma C.marshall D.A.martinez Caicedo K.T.meDonald R.D.mcKeown Y.meng J.Napolitano D.Naumov E.Naumova J.P.Ochoa-Ricoux A.OIshevskiy H.-R.Pan J.Park S.Patton J.C.Peng C.S.J.Pun F.Z.Qi m.Qi X.Qian N.Raper J.Ren C.morales Reveco R.Rosero B.Roskovec X.C.Ruan H.Steiner J.L.Sun T.Tmej K.Treskov W.-H.Tse C.E.Tull B.Viren V.Vorobel C.H.Wang J.Wang m.Wang N.Y.Wang R.G.Wang W.Wang W.Wang X.Wang Y.Wang Y.F.Wang Z.Wang Z.Wang Z.m.Wang H.Y.Wei L.H.Wei L.J.Wen K.Whisnant C.G.White H.L.H.Wong E.Worcester D.R.Wu F.L.Wu Q.Wu W.J.Wu D.m.Xia Z.Q.Xie Z.Z.Xing J.L.Xu T.Xu T.Xue C.G.Yang L.Yang Y.Z.Yang H.F.Yao m.Ye m.Yeh B.L.Young H.Z.Yu Z.Y.Yu B.B.Yue S.Zeng Y.Zeng L.Zhan C.Zhang F.Y.Zhang H.H.Zhang J.W.Zhang Q.m.Zhang X.T.Zhang Y.m.Zhang Y.X.Zhang Y.Y.Zhang Z.J.Zhang Z.P.Zhang Z.Y.Zhang J.Zhao L.Zhou H.L.Zhuang J.H.Zou Instiute of modern Physics East China University of Science and TechnologyShanghai 200237 University of Wisconsin MadisonWisconsin 53706 Wright Laboratory and Department of Physics Yale UniversityNew HavenConnecticut 06520 Brookhaven National Laboratory UptonNew York 11973 Department of Physics National Taiwan UniversityTaipei Institute of High Energy Physics Beijing 100049 National United University Miao-Li Department of Engineering Physics Tsinghua UniversityBejing 100084 Shenzhen University Shenzhen 518060 Sun Yat-Sen(Zhongshan)University Guangzhou North China Electric Power University Bejjing 102206 Chinese University of Hong Kong Hong Kong 999077 Siena College LoudonvilleNew York 12211 Department of Physics and Astronomy University of CaliforniaIrvineCaliformia 92697 University of Science and Technology of China Hefei 230026 Charles University Faculty of Mathematics and PhysicsPrague Department of Physics University of llinois at Urbana-ChampaignUrbanaIlinois 61801 Lawrence Berkeley National Laboratory BerkeleyCalifornia 94720 Department of Physics Illinois Institute of TechnologyChicagoIllinois 60616 Joint Institute for Nuclear Research DubnaMoscow Region Beijing Normal University Beijing 100875 Department of Nuclear Science and Technology School of Energy and Power EngineeringXi'an Jiaotong UniversityXi'an 710049 Department of Physics University of HoustonHoustonTexas 77204 China Institute of Atomic Energy Beijing 102413 Shandong University Jinan 250100 Guangxi University Nanning 530004 Center for Neutrino Physics Virginia TechBlacksburgVirginia 24061 Institute of Physics National Chiao-Tung UniversityHsinchu Department of Physics University of CincinnatiCincinnatiOhio 45221 Department of Physies Collge of Science and TechnologyTemple UniversityPhiladelphiaPennsylvania 19122 Dongguan University of Technology Dongguan 523808 Department of Physics University of CaliforniaBerkeleyCalifornia 94720 Department of Physics The University of Hong KongPokfulamHong Kong 999077 School

The establishment of a possible connection between neutrino emission and gravitational-wave(GW)bursts is important to our understanding of the physical processes that occur when black holes or neutron stars *** the Daya Bay experiment,using the data collected from December 2011 to August 2017,a search was per-formed for electron-antineutrino signals that coincided with detected GW events,including GW150914,GW151012,GW151226,GW170104,GW170608,GW 170814,and GW *** used three time windows of±10,±500,and±1000 s relative to the occurrence of the GW events and a neutrino energy range of 1.8 to 100 meV to search for correlated neutrino *** detected electron-antineutrino candidates were consistent with the expected background rates for all the three time *** monochromatic spectra,we found upper limits(90%confidence level)of the electron-antineutrino fluence of(1.13-2.44)×10^(11)cm^(-2)at 5 meV to 8.0×10^(7)cm^(-2)at 100 meV for the three time w *** the assumption of a Fermi-Dirac spectrum,the upper limits were found to be(5.4-7.0)×10^(9)cm^(2)for the three time windows.

关键词： grav itational waves electron-antineutrinos fluence upper limit

Antineutrino energy spectrum unfolding based on the Daya Bay measurement and its applications

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Chinese Physics C 2021年第7期45卷 1-19页

作者： F.P.An A.B.Balantekin m.Bishai S.Blyth G.F.Cao J.Cao J.F.Chang Y.Chang H.S.Chen S.m.Chen Y.Chen Y.X.Chen J.Cheng Z.K.Cheng J.J.Cherwinka m.C.Chu J.P.Cummings O.Dalager F.S.Deng Y.Y.Ding m.V.Diwan T.Dohnal D.Dolzhikov J.Dove m.dvorak D.A.Dwyer J.P.Gallo m.Gonchar G.H.Gong H.Gong m.Grassi W.Q.Gu J.Y.Guo L.Guo X.H.Guo Y.H.Guo Z.Guo R.W.Hackenburg S.Hans a m.He K.m.Heeger Y.K.Heng Y.K.Hor Y.B.Hsiung B.Z.Hu J.R.Hu T.Hu Z.J.Hu H.X.Huang J.H.Huang X.T.Huang Y.B.Huang P.Huber D.E.Jaffe K.L.Jen X.L.Ji X.P.Ji R.A.Johnson D.Jones L.Kang S.H.Kettel S.Kohn m.Kramer T.J.Langford J.Lee J.H.C.Lee R.T.Lei R.Leitner J.K.C.Leung F.Li H.L.Li J.J.Li Q.J.Li R.H.Li S.Li S.C.Li W.D.Li X.N.Li X.Q.Li Y.F.Li Z.B.Li H.Liang C.J.Lin G.L.Lin S.Lin J.J.Ling J.m.Link26 L.Littenberg B.R.Littlejohn J.C.Liu J.L.Liu J.X.Liu C.Lu H.Q.Lu K.B.Luk B.Z.ma X.B.ma X.Y.ma Y.Q.ma R.C.mandujano C.marshall K.T.mcDonald R.D.mcKeown Y.meng J.Napolitano D.Naumov E.Naumova T.m.T.Nguyen J.P.Ochoa-Ricoux A.Olshevskiy H.-R.Pan J.Park S.Patton J.C.Peng C.S.J.Pun F.Z.Qi m.Qi X.Qian N.Raper J.Ren C.morales Reveco R.Rosero B.Roskovec X.C.Ruan H.Steiner J.L.Sun T.Tmej1 K.Treskov W.-H.Tse C.E.Tull B.Viren V.Vorobel C.H.Wang J.Wang m.Wang N.Y.Wang R.G.Wang W.Wang W.Wang X.Wang Y.Wang Y.F.Wang Z.Wang Z.Wang Z.m.Wang H.Y.Wei L.H.Wei L.J.Wen K.Whisnant C.G.White H.L.H.Wong E.Worcester D.R.Wu F.L.Wu Q.Wu W.J.Wu D.m.Xia Z.Q.Xie Z.Z.Xing H.K.Xu J.L.Xu T.Xu T.Xue C.G.Yang L.Yang Y.Z.Yang H.F.Yao m.Ye m.Yeh B.L.Young H.Z.Yu Z.Y.Yu B.B.Yue V.Zavadskyi S.Zeng Y.Zeng L.Zhan C.Zhang F.Y.Zhang H.H.Zhang J.W.Zhang Q.m.Zhang S.Q.Zhang X.T.Zhang Y.m.Zhang Y.X.Zhang Y.Y.Zhang Z.J.Zhang Z.P.Zhang Z.Y.Zhang J.Zhao R.Z.Zhao L.Zhou H.L.Zhuang J.H.Zou Institute of modern Physics East China University of Science and TechnologyShanghai 200337 University of Wisconsin MadisonWisconsin 53706 Brookhaven National Laboratory UptonNew York 11973 Department of Physics Nnational Taiwan UniversityTaipei Institute of High Energy Physics Beijing 100049 National United University Miao-Li Department of Engineering Physics Tsinghua UniversityBeijing 100048 Shenzhen University Shenzhen 518061 Sun Yat-Sen(Zhongshan)University Guangzhou 510275 North China Electric Power University Beijing 102206 Chinese University of Hong Kong Hongkong 999077 Siena College LoudonvilleNew York 12211 Department of Physics and Astronomy University of CaliforniaIrvineCalifornia 92697 University of Science and Technology of China Hefei 230022 Charles University Faculty of Mathematics and PhysicsPrague Joint Institute for Nuclear Research DubnaMoscow Region Department of Physics University of Illinois at Urbana-ChampaignUrbanaIllinois 61801 Lawrence Berkeley National Laboratory BerkeleyCalifornia 94720 Department of Physics Illinois Institute of TechnologyChicagoIllinois 60616 Beijing Normal University Beijing 100875 Department of Nuclear Science and Technology School of Energy and Power EngineeringXi'an Jiaotong UniversityXi'an 710049 Wright Laboratory and Department of Physics Yale UniversityNew HavenConnecticut 06520 China Institute of Atomic Energy Beijing 102413 Shandong University Jinan 250002 Guangxi University No.100 Daxue East RoadNanning 530004 Center for Neutrino Physics Virginia TechBlacksburgVirginia 24061 Institute of Physics NCTUHsinchu Department of Physics University of CincinnatiCincinnatiOhio 45221 Department of Physics College of Science and TechnologyTemple UniversityPhiladelphiaPennsylvania 19122 Dongguan University of Technology Dongguan 523808 Department of Physics University of CaliforniaBerkeleyCalifornia 94720 Department of Physics The University of Hong KongPokfulamHongkong 999077 School of Physics Nankai UniversityTianjin 300071 Department o

The prediction of reactor antineutrino spectra will play a crucial role as reactor experiments enter the precision *** positron energy spectrum of 3.5 million antineutrino inverse beta decay reactions observed by the Daya Bay experiment,in combination with the fission rates of fissile isotopes in the reactor,is used to extract the positron energy spectra resulting from the fission of specific *** information can be used to produce a precise,data-based prediction of the antineutrino energy spectrum in other reactor antineutrino experiments with different fission fractions than Daya *** positron energy spectra are unfolded to obtain the antineutrino energy spectra by removing the contribution from detector response with the Wiener-SVD unfolding *** results are obtained with other unfolding methods.A technique to construct a data-based prediction of the reactor antineutrino energy spectrum is proposed and *** the reactor fission fractions,the technique can predict the energy spectrum to a 2%*** addition,we illustrate how to perform a rigorous comparison between the unfolded antineutrino spectrum and a theoretical model prediction that avoids the input model bias of the unfolding method.

关键词： reactor antineutrino energy spectrum Daya Bay application

Optimal design of velocity sensor for open channel flow using CFD

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International Journal of Agricultural and Biological Engineering 2017年第3期10卷 130-142页

作者： Joseph Scot dvorak Naiqian Zhang Department of Biosystems and Agricultural Engineering University of KentuckyLexingtonKentucky 40546-0276USA Department of Biological and Agricultural Engineering Kansas State UniversityManhattanKansas 66506USA

In this study,computational fluid dynamics(CFD)was used to design the geometry of a new velocity sensor for measuring open channel *** sensor determined velocity by observing the travel of dye carried in the *** of this design required the development of fluid dynamics models to determine potential errors in fluid velocity measurement due to velocity changes caused by intrusion of the sensor in the *** also required an analysis technique to determine the expected sensor response to the flow fields that resulted from the CFD *** models were then used to improve the geometry of the sensor to minimize the measurement *** with a simple design for the sensor geometry,the CFD analysis modeled the open channel flow around the sensor as turbulent using both the k-ωand k-εReynolds Averaged Navier-Stokes(RANS)turbulence *** model predicted that the original sensor design would underestimate the free-stream velocities of open channels by 7.9%to 2.0%across a range from 0.1 m/s to 5.0 m/*** using CFD to improve the sensor design,the velocity measurement error was limited to less than 4%across the same velocity range.

关键词： computational fluid dynamics flow measurement sensors flow velocity open channel

COmPARATIVE ANALYSIS OF GREEN ROOF GUIDELINES AND STANDARDS IN EUROPE AND NORTH AmERICA

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Journal of Green Building 2011年第2期6卷 170-191页

作者： Bruce dvorak Texas A&m University A305 Langford Architecture Center3137 TAMUCollege StationTexas 77843-3137United States of America

The German FLL Guidelines for green roofs are designed to inform about state-of-the-art performance expectations for green *** America is experiencing steady growth in the green roof market and has no single-source set of standards or guidelines;therefore there is a need to identify what type of guidance may be *** domains of knowledge from the FLL Guidelines are compared to similar areas of content in North American *** was found that although there are several North American green roof guidelines in use,compared to the FLL Guidelines there are areas where knowledge is lacking:guidance for compatibility of system components,slope application,filter fabrics,root barriers,surface and subsurface drainage,growth media,and erosion control,as well as standards or postconstruction testing requirements for fabrics,bulk density of growth media,root barrier performance,drainage media,and growth media.A case study of the Chicago City Hall green roof examines its content compliance with FLL performance *** for further advancement of North American guidelines include the need for more collaborative research and development in efforts to advance existing and new guidelines across ecoregions.

关键词： FLL guidelines performance guidelines regulation ecoregion vegetated roofs

Effects of Grain Refinement by ECAP on the Deformation Resistance of Al Interpreted in Terms of Boundary-mediated Processes

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Journal of materials Science & Technology 2016年第12期32卷 1309-1320页

作者： W.Blum J.dvorak P.Kral P.Eisenlohr V.Sklenicka Department of materials Science and Engineering Institute I: General Materials Properties Friedrich-Alexander University Erlangen-Niirnberg Martensstn 5 Erlangen 91058 Germany Institute of Physics of materials Academy of Sciences of the Czech Republic Zizkova 22 Brno CZ 61662 Czech Republic Department of Chemical Engineering and materials Science Michigan State University East Lansing M148824 USA

Results of a large set of tensile and compressive creep tests on pure Al were reanalyzed for the influence of low-and high-angle grain boundaries on the deformation resistance at the temperature T = 473 K = 0.51 Tmwhere Tm is the melting *** treatment by equal channel angular pressing followed by heating to T led to strong increase of areal fraction of high-angle boundaries in a structure of subgrains of ≈10^-6m in size,accompanied by significant reduction of subgrain strengthening and of the stress sensitivity of the deformation rate.（Sub）grain strengthening by low-angle boundaries is most effective;the strengthening effect virtually disappears during creep as the boundary spacings coarsen toward their stress-dependent,quasi-stationary size *** same type of coarsening is found for（sub）grain structures with large fraction of high-angle boundaries;in the quasi-stationary state they lead to softening at low and strengthening at high stresses,and a significant increase in tensile fracture strain to values up to *** results are analogous to former results for Cu and are explained in the same way by the influence of boundaries on storage and recovery of crystal defects and the homogenization of glide.

关键词： Deformation Grain boundaries Equal channel angular pressing (ECAP) Creep Dynamic recovery Fine grained microstructure

Bile acids as endogenous etiologic agents in gastrointestinal cancer

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World Journal of Gastroenterology 2009年第27期15卷 3329-3340页

作者： Harris Bernstein Carol Bernstein Claire m Payne Katerina dvorak Department of Cell Biology and Anatomy College of Medicine and Arizona Cancer Center University of ArizonaTucson Arizona 85724 United States Department of Cell Biology and Anatomy College of Medicine University of ArizonaTucson Arizona 85724 United States Hematology/Oncology Southern Arizona Veterans Affairs Health Care System Tucson Arizona 85723 United States

Bile acids are implicated as etiologic agents in cancer of the gastrointestinal (GI) tract, including cancer of the esophagus, stomach, small intestine, liver, biliary tract, pancreas and colon/rectum. Deleterious effects of bile acid exposure, likely related to carcinogenesis, include: induction of reactive oxygen and reactive nitrogen species; induction of DNA damage; stimulation of mutation; induction of apoptosis in the short term, and selection for apoptosis resistance in the long term. These deleterious effects have, so far, been reported most consistently in relation to esophageal and colorectal cancer, but also to some extent in relation to cancer of other organs. In addition, evidence is reviewed for an association of increased bile acid exposure with cancer risk in human populations, in specific human genetic conditions, and in animal experiments. A model for the role of bile acids in GI carcinogenesis is presented from a Darwinian perspective that offers an explanation for how the observed effects of bile acids on cells contribute to cancer development.

关键词： Bile acids Cancer Adenocarcinoma Esophagus Stomach Small intestine Pancreas Colon Apoptosis DNA damage

Osteopontin: A non-invasive parameter of portal hypertension and prognostic marker of cirrhosis

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World Journal of Gastroenterology 2016年第12期22卷 3441-3450页

作者： Radan Bruha marie Jachymova Jaromir Petrtyl Karel dvorak martin Lenicek Petr Urbanek Tomislav Svestka Libor Vitek 4~(th) Department of Internal medicine 1~(st) Faculty of Medicine and General University Hospital Charles University in Prague Institute of Clinical Biochemistry and Laboratory Diagnostics 1~(st) Faculty of Medicine Charles University in Prague Department of Internal medicine Central Military Hospital and 1~(st) Faculty of Medicine Charles University in Prague

AIm: To investigate the relationship between osteopontin plasma concentrations and the severity of portal hypertension and to assess osteopontin prognostic ***: A cohort of 154 patients with confirmed liver cirrhosis (112 ethylic, 108 men, age 34-72 years) were enrolled in the study. Hepatic venous pressure gradient (HVPG) measurement and laboratory and ultrasound examinations were carried out for all patients. HVPG was measured using a standard catheterization method with the balloon wedge technique. Osteopontin was measured using the enzyme-linked immunosorbent assay (ELISA) method in plasma. Patients were followed up with a specific focus on mortality. The control group consisted of 137 healthy age- and sex- matched ***: The mean value of HVPG was 16.18 ± 5.6 mmHg. Compared to controls, the plasma levels of osteopontin in cirrhotic patients were significantly higher (P ma levels of osteopontin were positively related to HVPG (P = 0.0022, r = 0.25) and differed among the individual Child-Pugh groups of patients. The cut-off value of 80 ng/mL osteopontin distinguished patients with significant portal hypertension (HVPG above 10 mmHg) at 75% sensitivity and 63% specificity. The mean follow-up of patients was 3.7 ± 2.6 years. The probability of cumulative survival was 39% for patients with HVPG > 10 mmHg and 65% for those with HVPG ≤ 10 mmHg (P = 0.0086, odds ratio (OR), 2.92, 95% confidence interval (CI): 1.09-7.76). Osteopontin showed a similar prognostic value to HVPG. Patients with osteopontin values above 80 ng/mL had significantly lower cumulative survival compared to those with osteopontin ≤ 80 ng/mL (37% vs 56%, P = 0.00035; OR = 2.23, 95%CI: 1.06-4.68).CONCLUSION: Osteopontin is a non-invasive parameter of portal hypertension that distinguishes patients with clinically significant portal hypertension. It is a strong prognostic factor for survival.

关键词： Cirrhosis Complications of cirrhosis Hepatic venous pressure gradient Osteopontin Portal hypertension Prognosis Survival prediction

Degradable magnesium-hydroxyapatite interpenetrating phase composites processed by current assisted metal infiltration in additive-manufactured porous preforms

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Journal of magnesium and Alloys 2022年第12期10卷 3641-3656页

作者： mariano Casas-Luna Edgar B.montufar Norbert Hort Sebastian Díaz-de-la-Torre JoséClaudio méndez-García Lucie Vištejnová Adam Brínek AlešDanhel Karel dvorak Jozef Kaiser Ladislav Celko Central European Institute of Technology Brno University of TechnologyPurkynova 123Brno 61200Czech Republic Institute of metallic Biomaterials Helmholtz-Zentrum HereonMax-Planck-Straße 1Geesthacht 21502Germany Institute of Product and Process Innovation Leuphana University LüneburgUniversitätsallee 1Lüneburg 21335Germany Centro de Investigación e Innovación Tecnológica Instituto Politécnico NacionalCerrada de Cecati s/nMexico City 02250Mexico Biomedical Center Faculty of Medicine in PilsenCharles UniversityAlej Svobody 1655/76Plzen 32300Czech Republic Institute of Biophysics of the Czech Academy of Sciences Královopolská135Brno 61265Czech Republic Faculty of Civil Engineering Brno University of TechnologyPurkynova 139Brno 61200Czech Republic

This work explores ceramic additive manufacturing in combination with liquid metal infiltration for the production of degradable interpenetrating phase magnesium/hydroxyapatite(mg/HA) composites. material extrusion additive manufacturing was used to produce stoichiometric,and calcium deficient HA preforms with a well-controlled open pore network, allowing the customization of the topological relationship of the composite. Pure mg and two different mg alloys were used to infiltrate the preforms by means of an advanced liquid infiltration method inspired by spark plasma sintering, using a novel die design to avoid the structural collapse of the preform. Complete infiltration was achieved in 8 min, including the time for the mg melting. The short processing time enabled to restrict the decomposition of HA due to the reducing capacity of liquid mg. The pure mg-base composites showed compressive yield strength above pure mg in cast state. mg alloy-based composites did not show higher strength than the bare alloys due to grain coarsening, but showed similar mechanical properties than other mg/HA composites that have significantly higher fraction of metallic phase. The composites showed faster degradation rate under simulated body conditions than the bare metallic component due to the formation of galvanic pairs at microstructural level. mg dissolved preferentially over HA leaving behind a scaffold after a prolonged degradation period. In turn, the fast production of soluble degradation products caused cell metabolic changes after 24 h of culture with not-diluted material extracts. The topological optimization and reduction of the degradation rate are the topics for future research.

关键词： Interpenetrating phase composite Biodegradable metal Topological relationship Direct ink writing metal infiltration Computed aided design

Co-located quantitative trait loci mediate resistance to Agrobacterium tumefaciens, Phytophthora cinnamomi,and *** in Juglans microcarpa×*** hybrids

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Horticulture Research 2021年第1期8卷 1363-1373页

作者： Ramesh K.Ramasamy ming-Cheng Luo Charles A.Leslie Dianne Velasco Natalia Ott Ali mcClean Abhaya m.Dandekar mallikarjuna Aradhya Patrick J.Brown Gregory T.Browne Daniel A.Kluepfel Andreas Westphal Jan dvorak Department of Plant Sciences University of CaliforniaDavisUSA USDA-ARS Crops Pathology and Genetics Research Unit Department of Plant PathologyUniversity of CaliforniaDavisUSA National Clonal Germplasm Repository USDA-ARSUniversity of CaliforniaDavisUSA Department of Nematology University of CaliforniaRiversideUSA

Soil-borne plant pathogens represent a serious threat that undermines commercial walnut(Juglans regia)production *** gall,caused by Agrobacterium tumefaciens,and Phytophthora root and crown rots,caused by various Phytophthora spp.,are among the most devastating walnut soil-borne diseases.A recognized strategy to combat soil-borne diseases is adoption of resistant ***,resistance to ***,***,and *** is mapped in the genome of Juglans microcarpa,a North American wild relative of cultivated ***-sib *** mother trees DJUG 31.01 and DJUG 31.09 were crossed with *** ***,producing 353 and 400 hybrids,*** propagated hybrids were genotyped by sequencing to construct genetic maps for the two populations and challenged with the three *** to each of the three pathogens was mapped as a major QTL on the long arm of *** chromosome 4D and was associated with the same haplotype,designated as haplotype b,raising the possibility that the two mother trees were heterozygous for a single mendelian gene conferring resistance to all three *** deployment of this haplotype in rootstock breeding will facilitate breeding of a walnut rootstock resistant to both crown gall and Phytophthora root and crown rots.

关键词： breeding regia soil