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Identification of QTL for Popping Characteristics Using a BC_2F_2 Population and Comparison with Its F_(2:3) Population in Popcorn

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Agricultural Sciences in China 2009年第2期8卷 137-143页

作者： li yu-ling dong Yong-bin NIU Su-zhen CUI Dang-qun Agronomy College Henan Agricultural University Zhengzhou 450002 P.R.China

Normal corn germplasm can be used to improve popcorn （Zea mays L.） through 1-2 backcrosses with popcorn as recurrent parents. Popping characteristics of derived lines from popcorn × dent or flint corn crosses play a determinant role in popcorn breeding. Advanced backcross QTL methods can effectively combine QTL identification and plant breeding. 220 selected BC2F2 families developed from a cross between Dan 232, a dent corn inbred line, and N04, an elite popcorn inbred line, were evaluated for three popping characteristics, popping volume, flake size, and popping rate, under two environmental conditions. Using composite interval mapping, a total of 10 significant QTLs were detected, and of these, 2 to 4 QTLs were identified for each trait. Six QTLs had favorable alleles contributed by Dan 232. Comparison with the 15 QTLs detected in the F2：3 families showed that 3 QTLs were the same in both populations. The QTLs should be redetected in generations developed through severe selection. Improved N04 and near isogenic lines could be developed from this BC2F2 population through selfing or another 1 to 2 backcrosses with N04.

关键词： Zea mays L. popcorn BC2F2 population quantitative trait loci popping characteristics

Low-Dose 1 MeV Electron Irradiation-Induced Enhancement in the Photoluminescence Emission of Ga-Rich InGaN Multiple Quantum Wells

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Chinese Physics Letters 2013年第7期30卷 135-137页

作者： ZHANG Xiao-Fu li yu-dong GUO Qi LU Wu Key Laboratory of Functional Materials and Devices for Special Environments Xinjiang Technical Institute of Physics&ChemistryChinese Academy of SciencesUrumqi 830011

We investigate the photoluminescence(PL)emission from InGaN/GaN multiple quantum-well structures before and after 1 MeV electron *** PL peak intensity exhibits a slight enhancement after low-dose electron irradiation(2×10^(13) e/cm^(2)),and then decreases with the cumulative electron ***,the full width at half maximum of the PL spectrum narrows after low-dose electron irradiation and widens when the irradiation dose is relatively *** respect to the yellow photoluminescence,there is no significant change until the electron fluence has accumulated up to 10^(14) e/cm^(2).

关键词： InGaN/GaN Electron Quantum

Integration of association and computational methods reveals functional variants of LEPR gene for abdominal fat content in chickens

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Journal of Integrative Agriculture 2021年第10期20卷 2734-2748页

作者： li yu-dong WANG Wei-jia li Zi-wei WANG Ning XIAO Fan GAO Hai-he GUO Huai-shun li Hui WANG Shou-zhi Key Laboratory of Chicken Genetics and Breeding Ministry of Agriculture and Rural AffairsHarbin 150030P.R.China Key Laboratory of Animal Genetics Breeding and ReproductionEducation Department of Heilongjiang ProvinceHarbin 150030P.R.China School of Animal Sciences and Technology Northeast Agricultural UniversityHarbin 150030P.R.China Fujian Sunnzer Biotechnology Development Co. Ltd.Guangze 354100P.R.China

Leptin receptor(LEPR)plays a vital role in obesity in humans and *** objective of this study is to assess LEPR functional variants for chicken adipose deposition by integration of association and in-silico analysis using a unique chicken population,the Northeast Agricultural University broiler lines divergently selected for abdominal fat content(NEAUHLF).Five online bioinformatics tools were used to predict the functionality of the single nucleotide polymorphisms(SNPs)in coding ***,the possible structure–function relationship of high confidence SNPs was determined by bioinformatics analyses,including the conservation and stability analysis based on amino acid residues,prediction of protein ligand-binding sites,and the superposition of protein tertiary ***,we analyzed the association between abdominal fat traits and 20 polymorphisms of chicken LEPR *** integrated results showed that rs731962924(N867I)and rs13684622(C1002R)could lead to striking changes in the structure and function of proteins,of which rs13684622(C1002R)was significantly associated with abdominal fat weight(AFW,P=0.0413)and abdominal fat percentage(AFP,P=0.0260)in ***,we are of the opinion that rs13684622(C1002R)may be an essential functional SNP affecting chicken abdominal fat deposition,and potentially applied to improvement of broiler abdominal fat in molecular marker-assisted selection(MAS)***,the coupling of association with computer electronic predictive analysis provides a new avenue to identify important molecular markers for breeders.

关键词： chicken LEPR nsSNPs bioinformatics tools abdominal fat content association analysis

Formation of Self-organization InAs Quantum Dots on (001) InP Substrate by As/P Exchange Reaction in MOCVD

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Chemical Research in Chinese Universities 1998年第2期14卷 113-116页

作者： WANG Ben zhong ZHAO Fang hai PENG yu heng JIN Zhi li yu dong YANG Shu ren liU Shi yong State Key Laboratory on Integrated Optoelectronics Jilin University RegionDepartment of Electrical EngineeringJilin UniversityChangchun130023

ＦｏｒｍａｔｉｏｎｏｆＳｅｌｆ┐ｏｒｇａｎｉｚａｔｉｏｎＩｎＡｓＱｕａｎｔｕｍＤｏｔｓｏｎ（００１）ＩｎＰＳｕｂｓｔｒａｔｅｂｙＡｓ／ＰＥｘｃｈａｎｇｅＲｅａｃｔｉｏｎｉｎＭＯＣＶＤ＊ＷＡＮＧＢｅｎ－ｚｈｏｎｇ＊，Ｚ... 详细信息

ＦｏｒｍａｔｉｏｎｏｆＳｅｌｆ┐ｏｒｇａｎｉｚａｔｉｏｎＩｎＡｓＱｕａｎｔｕｍＤｏｔｓｏｎ（００１）ＩｎＰＳｕｂｓｔｒａｔｅｂｙＡｓ／ＰＥｘｃｈａｎｇｅＲｅａｃｔｉｏｎｉｎＭＯＣＶＤ＊ＷＡＮＧＢｅｎ－ｚｈｏｎｇ＊，ＺＨＡＯＦａｎｇ－ｈａｉ，ＰＥＮＧＹ...

关键词： Self organized quantum dots Anion exchange reaction Photoluminescence Low pressure MOCVD.

Integration of genome-wide association study and selection signatures reveals genetic determinants for skeletal muscle production traits in an F2 chicken population

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Journal of Integrative Agriculture 2022年第7期21卷 2065-2075页

作者： li yu-dong BAI Xue liU Xin WANG Wei-jia li Zi-wei WANG Ning XIAO Fan GAO Hai-he GUO Huai-shun li Hui WANG Shou-zhi Key Laboratory of Chicken Genetics and Breeding Ministry of Agriculture and Rural AffairsHarbin 150030P.R.China Key Laboratory of Animal Genetics Breeding and ReproductionEducation Department of Heilongjiang ProvinceHarbin 150030P.R.Chin a 3 School of Animal Sciences and Technology Northeast Agricultural UniversityHarbin 150030P.R.China Fujian Sunnzer Biotechnology Development Co. Ltd.Guangze 354100P.R.China

Improving the production of broiler chicken meat has been a goal of broiler breeding programs worldwide for many years. However, the genetic architectures of skeletal muscle production traits in chickens have not yet been fully elucidated. In the present study, a total of 519 F_(2) birds, derived from a cross of Arbor Acres broiler and Baier layer, were re-sequenced(26 F_(0) individuals were re-sequenced at a 10-fold depth;519 F_(2) individuals were re-sequenced at a 3-fold depth) and the coupling of genome-wide association study(GWAS) and selection signatures(FST(fixation index) and θπ(nucleotide diversity)) was carried out to pinpoint the associated loci and genes that contribute to pectoral muscle weight(PMW) and thigh muscle weight(TMW). A total of 7 890 258 single nucleotide polymorphisms(SNPs) remained to be analyzed after quality control and imputation. The integration of GWAS and selection signature analyses revealed that genetic determinants responsible for skeletal muscle production traits were mainly localized on chromosomes 1(168.95–172.43 Mb) and 4(74.37–75.23 Mb). A total of 17 positional candidate genes(PCGs)(LRCH1, CDADC1, CAB39 L, LOC112531568, LOC112531569, FAM124 A, FOXO1, NBEA, GPALPP1, RUBCNL, ARL11, KPNA3, LHFP, GBA3, LOC112532426, KCNIP4, and SliT2) were identified in these regions. In particular, KPNA3 and FOXO1 were the most promising candidates for meat production in chickens. These findings will help enhance our understanding of the genetic architecture of chicken muscle production traits, and the significant SNPs identified could be promising candidates for integration into practical breeding programs such as genome-wide selection(GS) to improve the meat yield of chickens.

关键词： chicken muscle growth and development GWAS selection signature

STUDY ON THE WIND AND WAVE EXTREME PARAMETERS OF TONKIN GULF IN THE SOUTH CHINA SEA-THE APPliCATIONS OF LAGFD NUMERICAL MODELS

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Journal of Hydrodynamics 1997年第1期9卷 75-86页

作者： Qiao Fang-li, yu Wei-dong, Pan Zeng-diThe First Institute of Oceanography, SOA,Qingdao 266003,P. R. China The First Inst of Oceanography Qingdao China

Based on the hindcast of the severest 75 tropical cyclones (hereafter is called TCs) which affected Tonkin Gulf in history, the present paper gives sea surface wind and wave extreme parameters at 38 points corresponding to (1/2)×(1/2)?grid in the Gulf. The research increases our understanding of the meteo-ocean conditions on the whole area and provides basic data for ocean environmental research and engineering design.

关键词： wind,wave,gulf,ocean environmental research extreme parameters

Measurement of Photorefractive Two-Wave Coupling Exponential Gain Coefficient of liNbO_(3) : Fe Crystal

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Chinese Physics Letters 1998年第5期15卷 348-350页

作者： SUN Qian li yu-dong XU Jing-jun liU Si-min ZHANG Guang-yin ZHANG Xin-zheng ZHANG Guo-quan Department of Physics Nankai UniversityTianjin 300071

For a photorefractive crystal,the exponential gain coefficient of two-wave coupling,Г,is a *** this paper,the constantГof a liNbO_(3):Fe crystal is measured by using Gaussian beams and quasi-uniform *** difference b... 详细信息

关键词： crystal attributed exponential

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相干布居囚禁振荡与拉曼失谐的关系

物理学报 2024年第2期73卷 167-174页

作者：韩艳晨李昱东李维中国航空工业集团公司北京长城计量测试技术研究所计量与校准技术重点实验室北京100095

相干布居囚禁(CPT)振荡是一种基于CPT态而产生的瞬态振荡现象,与相干双色光频差和Λ型三能级结构原子基态能级间隔之间的拉曼失谐有关.本文采用锯齿波对微波信号进行频率调制,实现拉曼失谐均匀变化和阶跃变化.并通过建立频率调制速率和... 详细信息

相干布居囚禁(CPT)振荡是一种基于CPT态而产生的瞬态振荡现象,与相干双色光频差和Λ型三能级结构原子基态能级间隔之间的拉曼失谐有关.本文采用锯齿波对微波信号进行频率调制,实现拉曼失谐均匀变化和阶跃变化.并通过建立频率调制速率和拉曼失谐变化速率之间的关系,分析拉曼失谐变化速率和变化方式对CPT振荡的影响.结果表明,当拉曼失谐均匀变化时,激发CPT态原子产生振荡现象需要满足变化速率较快的条件,且激发产生的振荡呈现非谐波振荡行为.当拉曼失谐发生阶跃变化时,激发产生的CPT振荡为阻尼振荡且振荡频率与失谐量相等.利用锯齿波进行微波频率调制,进而实现对拉曼失谐的调制,实现CPT态的完全建立和CPT振荡的完全衰减过程,在弱磁场测量和原子钟领域具有较大的应用潜力.

关键词：相干布居囚禁瞬态振荡拉曼失谐阻尼振荡

Effects of Carbon Ion on M1 Seedlings of Sugar Sorghum under Drought Stress

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近代物理研究所和兰州重离子加速器实验室年报：英文版 2009年第1期 128-129页

作者： He Jinyu li Wenjian yu lixia dong Xicun