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Genetic diversity and elite gene introgression reveal the japonica rice breeding in northern China

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Journal of Integrative Agriculture 2015年第5期14卷 811-822页

作者： LIU Dan WANG Jia-yu WANG Xiao-xue yang xian-li SUN Jian CHEN Wen-fu Key Laboratory of Northeast Rice Biology and Breeding Ministry of Agriculture/Key Laboratory of Northern japonica Super Rice Genetics and BreedingMinistry of Education/Rice Research InstituteShenyang Agricultural University Mudanjiang Branch of Heilongjiang Academy of Agricultural Sciences

Abundant genetic diversity and rational population structure of germplasm benefit crop breeding *** investigate genetic variation among geographically diverse set of japonica germplasm,we analyzed 233 japonica rice cultivars collected from Liaoning,Jilin and Heilongjiang provinces of China,which were released from 1970 to 2011 by using 62 simple sequence repeat（SSR） markers and 8 functional gene tags related to yield.A total of 195 alleles（N_a） were detected with an average of 3.61 per locus,indicating a low level of genetic diversity level among all *** genetic diversity of the cultivars from Jilin Province was the highest among the three geographic distribution ***,the genetic diversity was increased slightly with the released period of cultivars from 1970 to *** analysis of molecular variance（AMOVA） revealed that genetic differentiation was more diverse within the populations than that among the *** neighbor-joining（NJ） tree indicated that cultivar clusters based on geographic distribution represented three independent groups,among which the cluster of cultivars from Heilongjiang is distinctly different to the cluster of cultivars from *** the examined functional genes,two or three allelic variations for each were detected,except for IPA1 and GW2,and most of elite genes had been introgressed in modem japonica rice *** results provide a valuable evaluation for genetic backgrounds of current japonica rice and will be used directly for japonica rice breeding in future.

关键词： breeding elite alleles populations Heilongjiang cultivar germplasm Liaoning distinctly panicle

美国俄勒冈东部晚三叠世冷泉碳酸盐岩流体来源及沉积环境

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矿物岩石地球化学通报 2024年第5期43卷 1018-1025页

作者：姚雪婷贾子策王钦贤陈多福上海海洋大学海洋科学与生态环境学院

冷泉碳酸盐岩作为记录冷泉系统中烃类厌氧氧化过程的重要载体，其岩石学和地球化学特征能够很好地反映冷泉流体来源及沉积氧化还原环境信息。美国俄勒冈地区发育大量晚三叠世冷泉碳酸盐岩，为探究其成岩流体性质并重建沉积环境，本文对... 详细信息

冷泉碳酸盐岩作为记录冷泉系统中烃类厌氧氧化过程的重要载体，其岩石学和地球化学特征能够很好地反映冷泉流体来源及沉积氧化还原环境信息。美国俄勒冈地区发育大量晚三叠世冷泉碳酸盐岩，为探究其成岩流体性质并重建沉积环境，本文对其进行了详细的岩石学、碳氧同位素、微量和稀土元素含量分析。结果表明，该碳酸盐岩主要由泥微晶方解石组成，保存了原始矿物——文石的针状和环带状结构，指示其形成于高硫酸根浓度孔隙水中；其δ13C为–32.7‰～–5.1‰，镜下还可见大量原生沥青，表明碳酸盐岩的碳源为甲烷、原油和海水；其稀土元素组成特征显示轻稀土亏损、重稀土富集，Ce呈明显负异常，Y/Ho平均值为45.30，与海水配分模式相似。综合研究表明，俄勒冈冷泉碳酸盐岩形成于靠近海底的浅表层氧化沉积环境中。

关键词：冷泉碳酸盐岩碳氧同位素稀土元素美国俄勒冈

高中生应对方式、社会支持与考试焦虑特点研究

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遵义师范学院学报 2024年第1期26卷 167-170页

作者：唐丹丹李爽陈雪飞杨宪珠福建师范大学心理学院福建福州350117 遵义师范学院教师教育学院贵州遵义563006 曲靖师范学院教师教育学院云南曲靖655011 罗甸县罗悃民族小学贵州黔南550108

本研究采用简易应对方式量表、领悟社会支持量表和考试焦虑量表对377名高中生施以测试,以探究高中生的应对方式、社会支持和考试焦虑特点。结果显示:(1)女生在积极应对方式上显著高于男生;(2)社会支持无显著人口统计学方面的差异;(3)女... 详细信息

本研究采用简易应对方式量表、领悟社会支持量表和考试焦虑量表对377名高中生施以测试,以探究高中生的应对方式、社会支持和考试焦虑特点。结果显示:(1)女生在积极应对方式上显著高于男生;(2)社会支持无显著人口统计学方面的差异;(3)女生的考试焦虑水平显著高于男生;(4)高一学生考试焦虑水平显著高于高二学生;(5)应对方式与社会支持显著正相关。

关键词：高中生应对方式社会支持考试焦虑

Spin gap in quasi-one-dimensional S=3/2 antiferromagnet CoTi2O5

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Chinese Physics B 2024年第3期33卷 609-617页

作者：徐浩航刘庆元辛潮申沁鑫罗军周睿程金光刘健陶玲玲刘志国霍明学王先杰隋郁 School of Physics Harbin Institute of TechnologyHarbin 150001China School of Science Changchun University of Science and TechnologyChangchun 130022China Beijing National Laboratory for Condensed Matter Physics and Institute of PhysicsChinese Academy of SciencesBeijing 100190China Laboratory for Space Environment and Physical Sciences Harbin Institute of TechnologyHarbin 150001China Southwest Institute of Applied Magnetics Mianyang 621000China

Quasi-one-dimensional(1D)antiferromagnets are known to display intriguing phenomena especially when there is a spin gap in their spin-excitation *** we demonstrate that a spin gap exists in the quasi-1D Heisenberg antiferromagnet CoTi2O5 with highly ordered Co2+/Ti4+occupation,in which the Co2+ions with S=3/2 form a 1D spin chain along the ***2O5 undergoes an antiferromagnetic transition at TN~24 K and exhibits obvious anisotropic magnetic susceptibility even in the paramagnetic *** a gapless magnetic ground state is usually expected in a quasi-1D Heisenberg antiferromagnet with half-integer spins,by analyzing the specific heat,the thermal conductivity,and the spin-lattice relaxation rate(1/T1)as a function of temperature,we found that a spin gap is opened in the spin-excitation spectrum of CoTi2O5 around TN,manifested by the rapid decrease of magnetic specific heat to zero,the double-peak characteristic in thermal conductivity,and the exponential decay of 1/T1 below *** the magnetic measurements and the first-principles calculations results indicate that there is spin-orbit coupling in CoTi2O5,which induces the magnetic anisotropy in CoTi2O5,and then opens the spin gap at low temperature.

关键词： quasi-one-dimensional antiferromagnet magnetic anisotropy spin gap

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岩土勘察项目信息化采编及管理系统设计

智能城市 2024年第4期10卷 49-52页

作者：杜芩肖现臣曹雪济南市勘察测绘研究院山东济南250101

文章依托移动互联网、WebGIS等信息化技术,设计了移动端信息采集App和浏览器端的项目管理系统,实现了外业数据采集、项目管理、钻孔管理的信息化,同时规范了数据格式,提升了工作效率。

关键词：岩土勘察项目信息化采编勘察项目信息化项目管理系统

Warming effects on plant biomass allocation and correlations with the soil environment in an alpine meadow,China

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Journal of Arid Land 2016年第5期8卷 773-786页

作者： XU Manhou LIU Min xue xian ZHAI Datong Taiyuan Normal University Jinzhong 030619 China Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences Lanzhou 730000 China

Alpine meadow ecosystem is fragile and highly sensitive to climate *** understanding of the allocation of above-and below-ground plant biomass and correlations with environmental factors in alpine meadow ecosystem can result in better protection and effective utilization of alpine meadow *** chose an alpine meadow in the Qinghai-Tibetan Plateau of China as the study area and designed experimental warming plots using a randomized block experimental *** used single-tube infrared radiators as warming devices,established the warming treatments,and measured plant above- （AGB） and below-ground biomass （BGB） during the growing seasons （May to September） in 2012 and *** determined the allocation of biomass and the relationship between biomass and soil environment under the warming *** indices including above-ground biomass,below-ground biomass and the ratio of root to shoot （R/S） ,and soil factors including soil moisture and soil temperature at different depths were *** results showed that （1） BGB of the alpine meadow had the most significant allometric correlation with its AGB （y=298.7x~ （0.44） ,P〈0.001） ,but the relationship decreased under warming treatment and the determination coefficient of the functional equation was 0.102 which was less than that of 0.188 of the unwarming treatment （control） ; （2） BGB increased,especially in the deeper soil layers under warming treatment （P〉0.05） .At 0–10 cm soil depth,the percentages of BGB under warming treatment were smaller than those of the control treatment with the decreases being 8.52% and 8.23% in 2012 and 2013,***,the BGB increased 2.13% and 2.06% in 2012 and 2013,respectively,at 10–50 cm soil depths; （3） BGB had significant positive correlations with soil moisture at 100 cm depth and with soil temperature at 20–100 cm depths （P〈0.05） ,but the mean correlation coefficient of soil temperature was 0.354,greater than the 0.245 of soil moisture.R/S ratio had a s

关键词： alpine meadow above-ground biomass below-ground biomass soil environment warming

The facile insertion of β-keto sulfones to arynes:The direct preparation of polysubstituted ortho-keto benzyl sulfones

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Chinese Chemical Letters 2008年第6期19卷 631-633页

作者： Jian xue Lu Ling Wu xian Huang Department of Chemistry Zhejiang University （Campus Xixi） Hangzhou 310028 PR China State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 PR China

One novel carbon-carbon bond insertion reaction of arynes has been developed. By this reaction β-keto sulfones can insert the triple bond of arynes to prepare polysubstituted ortho-keto benzyl sulfones.

关键词： arynes Insertion reaction C-C bonds β-Keto sulfones

Enolic Schiff Base Zinc Amide Complexes： Highly Active Catalysts for Ring-Opening Polymerization of Lactide and ε-Caprolactone

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Chinese Journal of Polymer Science 2018年第10期36卷 1123-1128页

作者： Chen-yang Hu Ran-Long Duan Jing-Wei yang Shu-Jun Dong Zhi-Qiang Sun Xuan Pang xian-Hong Wang xue-Si Chen Key Laboratory of Polymer Ecomaterials Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China University of Chinese Academy of Sciences Beijing 100049 China Department of Materials Science and Engineering Jilin University Changchun 130025 China VIP Department Stomatological Hospital of Jilin University Changchun 130021 China

A series of zinc silylamido complexes based upon NNO tridentate enolic Schiff base framework have been synthesized and characterized. These complexes were tested for the ring opening polymerization of lactide and e-caprolactone, exhibiting notably high activity at ambient temperature, The influence of imine bridge length and substituents of diketone over the course of polymerization was investigated in details. Remarkably, 4a was confirmed to be a rare example of exceedingly active and robust zinc catalysts, achieving major transformation of lactide under extremely low loading （0.025 mol%） within 18 rain. The influence of various monomers as well as the polymerization mechanism have also been discussed.

关键词： Zinc β-Diketone Ring-opening polymerization Lactide ε-Caprolactone

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激素对圆齿野鸦椿种子萌发的影响

南方农业学报 2024年第1期55卷 160-168页

作者：阳先波冉芳周宇曦涂淑萍蔡军火姜雪茹钟鑫宏江西农业大学园林与艺术学院江西南昌330045

【目的】探究激素在圆齿野鸦椿种子萌发中的作用及其与活性氧的关系,为圆齿野鸦椿种子破眠技术和种苗高效繁育技术提供理论依据。【方法】以自然层积210 d的圆齿野鸦椿种子为试验材料,去除外部硬质种壳,进行为期12 d的萌发试验,测定纯... 详细信息

【目的】探究激素在圆齿野鸦椿种子萌发中的作用及其与活性氧的关系,为圆齿野鸦椿种子破眠技术和种苗高效繁育技术提供理论依据。【方法】以自然层积210 d的圆齿野鸦椿种子为试验材料,去除外部硬质种壳,进行为期12 d的萌发试验,测定纯水、不同浓度的赤霉素(GA_(3))(20、40和60μmol/L)和脱落酸(ABA)(10、20和30μmol/L)处理下萌发率及活性氧、抗氧化物质、植物激素、可溶性糖和可溶性蛋白含量的变化,并观察记录种子的萌发形态。【结果】纯水处理萌发率最终达77.8%,GA_(3)处理萌发率最高可达82.2%,ABA处理萌发率最终均未达50.0%,而保留硬质种皮纯水处理的种子萌发率仅17.8%。3种浓度的GA_(3)处理均可有效缩短圆齿野鸦椿种子萌发率达50.0%的时间(T_(50)),促进根茎生长,但其最终萌发率均与纯水处理无显著差异(P>0.05);ABA处理浓度越高,对圆齿野鸦椿种子抑制萌发作用越强。相关分析显示,在萌发的第8和12 d,萌发率与GA_(3)、油菜素内酯(BR)和茉莉酸(JA)呈显著正相关(P<0.05,下同),且超氧阴离子(O_(2)^(-)·)与BR和JA含量呈显著负相关,与过氧化氢酶(CAT)、ABA、ABA/GA_(3)均呈显著正相关。【结论】添加GA_(3)可有效缩短圆齿野鸦椿种子萌发率达50%的时间,促进根茎生长,O_(2)^(-)·与ABA的积累对种子萌发存在抑制作用,BR和JA对种子萌发的促进作用可能与对O_(2)^(-)·的清除有关。

关键词：圆齿野鸦椿种子萌发植物激素活性氧