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Genomic selection in plant breeding:Key factors shaping two decades of progress

molecular Plant 2024年第4期17卷 552-578页

作者： Admas Alemu johanna Astrand Osval A.montesinos-López julio Isidro y Sanchez javier Fernandez-Gónzalez Wuletaw Tadesse Ramesh R.Vetukuri Anders S.Carlsson Alf Ceplitis joséCrossa Rodomiro Ortiz Aakash Chawade Department of Plant Breeding Swedish University of Agricultural SciencesAlnarpSweden Lantmannen Lantbruk SvalövSweden Facultad de Telematica University de ColimaColimaColima 28040Mexico Centro de Biotecnología y Genómica de Plantas(CBGP UPM-INIA)Universidad Politécnica de Madrid(UPM)-Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria(INIA)Campus de Montegancedo-UPM28223 MadridSpain International Center for Agricultural Research in the Dry Areas(ICARDA) RabatMorocco International maize and Wheat Improvement Center(CImmyT) Km 45Carretera México-VeracruzTexcocoMéxico 52640Mexico

Genomic selection,the application of genomic prediction(GP)models to select candidate individuals,has significantly advanced in the past two decades,effectively accelerating genetic gains in plant *** article provides a holistic overview of key factors that have influenced GP in plant breeding during this *** delved into the pivotal roles of training population size and genetic diversity,and their relationship with the breeding population,in determining GP *** emphasis was placed on optimizing training population *** explored its benefits and the associated diminishing returns beyond an optimum *** was done while considering the balance between resource allocation and maximizing prediction accuracy through current optimization *** density and distribution of single-nucleotide polymorphisms,level of linkage disequilibrium,genetic complexity,trait heritability,statistical machine-learning methods,and non-additive effects are the other vital *** wheat,maize,and potato as examples,we summarize the effect of these factors on the accuracy of GP for various *** search for high accuracy in GP—theoretically reaching one when using the Pearson’s correlation as a metric—is an active research area as yet far from optimal for various *** hypothesize that with ultra-high sizes of genotypic and phenotypic datasets,effective training population optimization methods and support from other omics approaches(transcriptomics,metabolomics and proteomics)coupled with deep-learning algorithms could overcome the boundaries of current limitations to achieve the highest possible prediction accuracy,making genomic selection an effective tool in plant breeding.

关键词： genomic selection genetic gain genomic prediction optimization deep learning training population optimization

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mssbauer spectra of mnFe_(2-2x)Al_(2x)O_4(0≤x≤0.4) ferrites

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journal of Central South University 2010年第6期17卷 1129-1132页

作者： BATOO K m KUmAR S PRAKASH R ALImUDDIN SONG j I CHUNG H jEONG H koo B H LEE C G King Abdullah Institute for Nanotechnology King Saud UniversityRiyadh 11451Saudi Arabia School of Nano and Advanced materials Engineering Changwon National UniversityChangwon 641773Korea Department of mechanical Engineering Changwon National UniversityChangwon 641773Korea Department of Applied Physics Aligarh Muslim UniversityAligarh 202002India Department of Precision & mechanical Engineering and BK21 Eco-Friendly Heat & Cooling Energy mechanical Research Team Gyeongsang National U niversityTongyeong 650160Korea

The effect of non-magnetic Al^3＋ ion doping on the magnetic properties of mnFe2-2x Al2xO4 （0 ≤x≤ 0.4） spinel ferrites was studied using moessbauer spectroscopy measurements at room temperature. From the moessbauer study, it is observed that the ：esolved hyperfine sextets are due to the distribution of Fe ions on the two sublattices of the spinel ferrites. The value of the isomer shift obtained from the fitting of the moessbauer spectra indicates that Fe ions are in ＋3 state. A paramagnetic doublet is observed at ：iegree of inversion x=0.4, superimposed on the hyperfine sextets, indicating that the super-exchange interaction A-B decreases due to ：he dilution of sublattice by Al^3＋ ions. The hyperfine magnetic field decreases at both interstitial sites of tetrahedral （A） and 3ctahedral （B） with the increase in Al concentration.

关键词： ferrites hyperfine interactions moessbauer spectroscopy isomer shift

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Photoluminescence characteristics of soft PZT 53/47 ceramic doped at A and/or B sites

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journal of Advanced Ceramics 2018年第2期7卷 109-116页

作者： m.D.DURRUTHy-RODRíGUEZ j.j.GERVACIO-ARCINIEGA m.HERNáNDEZ-GARCíA j.m.yánEZ-LImóN Universidad Nacional Evangélica Departamento de Física Aplicada Instituto de CibernéticaMatemáticay FísicaCITMA Catedrático CONACyT-Facultad de Ciencias Físico matemáticas Benemérita Universidad Autónoma de Puebla CINVESTAV-Unidad Querétaro del IPN Libramiento Norponiente 2000Fracc.Real de Juriquilla

This study presents the photoluminescence characteristics of the PZT 53/47 system doped at A and/or B sites, with Nb(PZTN), La(PLZT), and Nb–La(PLZTN) in the concentration range from 0.2 to 1.0 molar fraction. The intensity of the emission bands of the system PZTN is two orders higher than the intensity of the emission bands of the systems PLZT and PLZTN, and these emission bands are located at 1.73 eV(718 nm), 2.56 eV(485 nm), and 2.93 eV(424 nm). The origin of the luminescence in these systems is associated with lead and oxygen vacancies produced during the sintering process. The results from X-ray diffraction(XRD) show a mixture of rhombohedral and tetragonal phases. The system PZTN shows a higher tetragonal phase concentration, while PLZT and PLZTN systems show a higher rhombohedral phase concentration. The cell volume shows an increase with dopant concentration only in the case of the PLZTN system. The band gap energy shows a small variation in the PZTN and PLZTN cases around 3.0 eV, a close value to the band gap energy of the pure PZT 53/47 sample. The system PLZT shows an increasing behavior until 4.41 eV for the higher dopant concentration.

关键词： photoluminescence PZT ceramics band structure X-ray diffraction(XRD)

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Coating behavior and surface hardening of Pd_(77)Cu_6Si_(17) thin film metallic glass on AZ31 magnesium alloy

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journal of Zhejiang University-Science A(Applied Physics & Engineering) 2013年第12期14卷 898-905页

作者： X.H.DU y.C.CHANG H.j.PEI B.y.CHEN m.C.KUO j.C.HUANG School of materials Sciences and Engineering Shenyang Aerospace University Department of materials and Optoelectronic Science National Sun Yat-Sen University Department of materials Engineering Kun Shan University

Pd77Cu6Si17(PCS) thin film metallic glasses(TFmGs) with high glass forming ability and hardness were selected as a hard coating for improving the surface hardness of AZ31 magnesium alloy. Both microindentation and nanoindentation tests were conducted on specimens with various PCS film thicknesses from 30 to 2000 nm. The apparent hardness and the relative indentation depth(β) were integrated using a quantitative model. The interaction parameters involved and relative hardness values were extracted from iterative calculations. According to the results, surface hardness can be enhanced greatly by PCS TFmGs in the shallow region, followed by gradual decrease with increasing β ratio. In addition, specimens with thinner coatings(e.g., 200nm) showed greater substrate-film interaction and those with thick coatings(e.g., 2000nm) became prone to film cracking. The optimum TFmG coating thickness in this study was estimated to be around 200 nm.

关键词： Thin film metallic glass(TFmG) magnesium alloy Sputtering process Nanoindentation Coating thickness

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High-spin structure in ^(187)Pt

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Science China(Physics,mechanics & Astronomy) 2008年第8期51卷 1053-1071页

作者： OSHImA m TOH y KOIZUmI m OSA A HATSUKAWA y SUGAWARA m japan Atomic Energy Agency TokaiIbaraki 319-1195Japan Chiba Institute of Technology NarashinoChiba 275-0023Japan

High-spin states in 187Pt were studied via the 173yb(18O,4n) reaction. Rotational bands based on the νi13/2,ν7/2-[503],νi213/2νj,ν3/2-[512] and ν1/2-[521] configurations were observed,and interpreted within the framework of the cranked shell model. The TRS calculations show that the νi13/2 band has an appreciable negative γ deformation,and the negative-parity bands tend to have a near prolate shape with small positive γ values. Experimental values of B(m1) /B(E2) ratios have been extracted and compared with theoretical values from the semi-classical D-nau and Frauendof approach,strongly suggesting a low frequency πh9/2 alignment in the ν7/2-[503] band.

关键词： rotational band configuration shape coexistence

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Characterization for Fusion Candidate Vanadium Alloys

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Plasma Science and Technology 2004年第4期6卷 2395-2399页

作者： T.muroga T.Nagasaka j.m.Chen Z.y.Xu Q.y.Huang y.C.Wu NationalInstituteforFusionScience Toki509-5292Japan SouthwesternInstituteofPhysics Chengdu610041China InstituteofPlasmaPhysics ChineseAcademyofSciencesHefei230031China

This paper summarizes recent achievements in the characterization ofcandidate vanadium alloys obtained for fusion in the framework of the japan-China Core UniversityProgram. National Institute for Fusion Science (NIFS) has a program of fabricating high-purityV-4Cr-4Ti alloys. The resulting products (NIFS-HEAT-1,2), were characterized by various researchgroups in the world including Chinese partners. South Western Institute of Physics (SWIP) fabricateda new V-4Cr-4Ti alloy (SWIP-Heat), and carried out a comparative evaluation of hydrogenembrittlement of NIFS-HEATs and SWIP-Heat. The tensile test of hydrogen-doped alloys showed that theNIFS-HEAT maintained the ductility to relatively high hydrogen levels. The comparison of the datawith those of previous studies suggested that the reduced oxygen level in the NIFS-HEATs should beresponsible for the increased resistance to hydrogen embrittlement. Based on the chemical analysisdata of NIFS-HEATs and SWIP-Heats, neutron-induced activation was analyzed in Institute of PlasmaPhysics (IPP-CAS) as a function of cooling time after the use in the fusion first wall. The resultsshowed that the low level of Co dominates the activity up to 50 years followed by a domination of Nbor Nb and Al in the respective alloys. It was suggested that reduction of Co and Nb, both of whichare thought to have been introduced via cross-contamination into the alloys from the molds usedshould be crucial for reducing further the activation.

关键词： vanadium alloys characterization nuclear fusion

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Schottky photodiode using submicron thick diamond epilayer for flame sensing

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Nano-micro Letters 2009年第1期1卷 30-33页

作者： y.Koide m.y.Liao j.Alvarez m.Imura K.Sueishi F.yoshifusa Sensor materials Center (SenmC) National Institute for Materials Science (NIMS) Laboratoire de Génie Electrique de Paris (UmR 8507 CNRS) Ecole Supérieure d’Electricité Universités Paris VI et Paris XI International Center for materials Nanoarchitectonics (mANA) National Institute for Materials Science (NIMS) ANTEC Co.

The sensing of a flame can be performed by using wide-bandgap semiconductors, which offer a high signal-to-noise ratio since they only response the ultraviolet emission in the flame. Diamond is a robust semiconductor with a wide-bandgap of 5.5 e V, exhibiting an intrinsic solar-blindness for deep-ultraviolet(DUV) detection. In this work, by using a submicron thick boron-doped diamond epilayer grown on a type-Ib diamond substrate, a Schottky photodiode device structure- based flame sensor is demonstrated. The photodiode exhibits extremely low dark current in both forward and reverse modes due to the holes depletion in the epilayer. The photodiode has a photoconductivity gain larger than 100 and a threshold wavelength of 330 nm in the forward bias mode. CO and OH emission bands with wavelengths shorter than 330 nm in a flame light are detected at a forward voltage of-10 V. An alcohol lamp flame in the distance of 250 mm is directly detected without a focusing lens of flame light.

关键词： Flame sensing Boron-doped diamond Schottky photodiode

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Compression Stability of Reversed Austenite in 9Ni Steel

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journal of materials Science & Technology 2012年第6期28卷 558-561页

作者： S.H.Chen m.j.Zhao X.y.Li L.j.Rong Institute of metal Research Chinese Academy of SciencesShenyang 110016China

The effect of compressive stress on the stability of reversed austenite in gNi steel was investigated by uni- axial and hydrostatic compression. It was found that the uniaxial compressive pressure promoted the Υ-α transformation, while the hydrostatic pressure suppressed the -Υ-α transformation. The pressure dependent transformation behavior can be explained according to thermodynamic analysis.

关键词： 9Ni steel martensite Reversed austenite Hydrostatic pressure Uniaxial compressive pressure

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Experimental and numerical investigation of buckling in rectangular steel plates with groove-shaped cutouts

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journal of Zhejiang University-Science A(Applied Physics & Engineering) 2012年第6期13卷 469-480页

作者： y. Faradjian mOHTARAm j. Taheri KAHNAmOUEI m. SHARIATI B. BEHjAT mechanical Department Islamic Azad University Bostan Abad Branch Iran mechanical Department Shahrood University of Technology Shahrood Iran mechanical Department Sahand University of Technology Tabriz Iran

Steel plates are widely used in various structures, such as the deck and bodies of ships and bridges, and in the aerospace industry. In many instances, these plates are subjected to axial compression loads that predispose the sheets to instability and buckling. In this study, we investigate the buckling and post-buckling behaviors of steel plates having groove-shaped cutouts of various dimensions and angles using finite element method (FEm) (by ABAQUS software) and experimental tests (by an Instron servohydraulic machine). Boundary conditions were clamped by supports at upper and lower ends and free supports at the other edges. The results of both numerical and experimental analyses are compared, which show a very good agreement between them. Finally, based on the experimental findings, formulas are presented for the determination of the buckling load of such plates.

关键词： Buckling Steel plates Cutout Experimental analysis Finite element method (FEm)

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First-principles Study of Point Defects in Stoichiometric and Non-stoichiometric y_4Al_2O_9

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journal of materials Science & Technology 2013年第12期29卷 1161-1165页

作者： Z.Li B.Liu j.m.Wang L.C.Sun j.y.Wang y.C.Zhou Z.j.Hu High-performance Ceramics Division Shenyang National Laboratory for Materials ScienceInstitute of Metal ResearchChinese Academy of Sciences Aerospace Research Institute of materials and Processing Technology

By using the first-principles calculation, we studied the mechanisms of point defects in y4AI209 （yAm）, a promising ternary oxide with excellent optical and thermal properties. It is found that the predominant native defect species is closely dependent on the chemical potentials of each constituent. In the case of O-rich condition, the oxygen interstitial has the very low defect formation energy, followed by the anti-site defects and AI vacancy; in the case of AI-rich condition, the oxygen vacancy yields the lowest defect formation energy, followed by the anti-site defects and AI interstitial. The present result shows that in all the possible chemical potential ranges, anti-site defects have relatively low defect formation energy and might exist in high concentration in yAm. Furthermore, AIy anti-site has relatively lower defect formation energy than the yAt anti- site throughout. The behaviors of defect complexes under non-stoichiometric condition, such as the AI203 or y203 excess, are also investigated. The results provide helpful guide to optimize the experimental synthesizing of yAm.

关键词： Ternary y-AI-O oxide Defect formation energy Chemical potential

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