检索结果-南通市图书馆

Lodging resistance and yield potential of winter wheat:effect of planting density and genotype

Frontiers of Agricultural Science and Engineering 2015年第2期2卷 168-178页

作者： Yonggui XIAO Jianjun LIU Haosheng LI xinyou cao Xianchun XIA Zhonghu HE Institute of Crop Science National Wheat Improvement CenterChinese Academy of Agricultural Sciences(CAAS)Beijing 100081China Crop Research Institute Shandong Academy of Agricultural SciencesJinan 250100China International Maize and Wheat Improvement Center(CIMMYT)China Office c/o CAASBeijing 100081China

Improved lodging resistance is important for achieving high yield in irrigated *** study was conducted to determine genotypic variation in lodging resistance and related morphological traits among winter wheat cultivars planted at two densities,and to identify key traits associated with lodging *** performance of 28 genotypes,including 24 released cultivars and four advanced lines,was evaluated at 250 plants per square meter and 500 plants per square meter in Shandong province during the 2008–2009 and 2009–2010 crop *** the higher density,the average grain yield was 2.6%higher,even though lodging score rose by as much as 136%.The higher planting density increased lodging through increased leaf area index(LAI),plant height,center of gravity and length of basal internodes,and reduced grain weight per spike and diameter of the lower two stem ***,center of gravity and diameter of first internodes,as the important indicators for lodging resistance,were significantly correlated with lodging score,with R=0.62,0.59 and–0.52(P<0.01),*** pushing resistance was significantly associated with diameter and length of the first internodes(R=0.71–0.77,P<0.01),indicating it could be used to assess the strength of the lower *** planting density could be used to select genotypes with lodging resistance in irrigated *** carrying high plant density tolerance and high yield potential,such as Jimai 22 and Liangxing 66,were recommended as leading cultivars for production as well as elite crossing parents for further increasing yield potential in the Yellow and Huai Valleys Winter Wheat Zone in China.

关键词： common wheat yield potential lodging performance pushing resistance leaf area index

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

冠层活性相关性状全基因组关联分析及其对产量性状遗传效应的解析

引用

中国农业科学 2024年第4期57卷 627-637页

作者：李法计程敦公余晓丛闻伟锷刘金栋翟胜男刘爱峰郭军曹新有刘成宋健民刘建军李豪圣山东省农业科学院作物研究所/小麦玉米国家工程研究中心/农业农村部黄淮北部小麦生物学与遗传育种重点实验室/山东省小麦技术创新中心/济南市小麦遗传改良重点实验室菏泽学院农业与生物工程学院(牡丹学院) 遵义医科大学细胞生物学教研室中国农业科学院作物科学研究所

【目的】冠层活性是反映作物生长发育的重要指标，发掘小麦冠层活性相关基因并分析其与产量性状的关系，为解析产量遗传结构和辅助育种提供理论支撑。【方法】以166份国内外小麦品种为材料，将其种植于河南安阳和安徽濉溪，结合已构建... 详细信息

【目的】冠层活性是反映作物生长发育的重要指标，发掘小麦冠层活性相关基因并分析其与产量性状的关系，为解析产量遗传结构和辅助育种提供理论支撑。【方法】以166份国内外小麦品种为材料，将其种植于河南安阳和安徽濉溪，结合已构建的包含326 570个来源于小麦90K和660K SNP芯片标记的高密度整合物理图谱，对苗期和花后10 d归一化植被指数(NDVI-S和NDVI-10)及花后10 d旗叶叶绿素含量(Chl-10)进行关联分析，并与前期利用相同材料得到的产量相关性状结果进行比较。【结果】NDVI-S、NDVI-10和Chl-10在基因型、环境及基因型×环境互作间变异方差均达极显著(P<0.01)差异，广义遗传力(hb2)分别为0.81、0.81和0.91。分别检测到13、12和15个与NDVI-S、NDVI-10和Chl-10显著相关的位点，其中，有12、11和12个为新位点，5个位点与2个以上性状有关。166份小麦品种含有NDVI-S、NDVI-10和Chl-10优异等位基因数变幅分别为4-11、3-11和4-12，且随着优异等位基因数目增加其对应表型值呈递增趋势。NDVI-S与千粒重、粒长和粒宽显著正相关(P<0.01);Chl-10与产量和旗叶宽显著正相关(P<0.01)，与单位面积穗数、株高和穗下节长显著负相关(P<0.01)。检测到7个同时与产量和冠层活性相关的多效性位点。【结论】NDVI-S可用于品种产量性状的选择，检测到的稳定位点和多效性位点可在开发标记后用于育种材料的检测。

关键词：小麦冠层活性产量归一化植被指数叶绿素含量关联分析

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Genetic dissection of the powdery mildew resistance in wheat breeding line LS5082 using BSR-Seq

引用

The Crop Journal 2022年第4期10卷 1120-1130页

作者： Liru Wu Tong Zhu Huagang He xinyou cao Haosheng Li Hongxing Xu Mengshu Jia Lipei Zhang Jiancheng Song Ghader Mirzaghaderi Cheng Liu Pengtao Ma School of Life Sciences Yantai UniversityYantai 264005ShandongChina School of Life Sciences Jiangsu UniversityZhenjiang 212013JiangsuChina Crop Research Institute Shandong Academy of Agriculture SciencesJinan 250100ShandongChina State Key Laboratory of Crop Stress Adaptation and Improvement School of Life SciencesHenan UniversityKaifeng 475004HenanChina Yantai Jien Biological Science&Technology Ltd. Yantai 265100ShandongChina Department of Agronomy and Plant Breeding Faculty of AgricultureUniversity of KurdistanP.O.Box 416SanandajIran

Powdery mildew of wheat is a destructive disease seriously threatening yield and quality *** dissection of new resistance-related loci/genes is necessary to control this ***5082 is a Chinese wheat breeding line with resistance to powdery *** analysis,using the populations of LS5082 and three susceptible parents(Shannong 29,Shimai 22 and Huixianhong),indicated that a single dominant gene,tentatively designated PmLS5082,conferred seedling resistance to different Blumeria graminis ***(Bgt)*** segregant RNA-Seq was carried out to map PmLS5082 and to profile differentially expressed genes associated with ***5082 was mapped to a 0.7 cM genetic interval on chromosome arm 2BL,which was aligned to a 0.7 Mb physical interval of 710.3–711.0 ***5082 differs from the known powdery mildew(Pm)resistance genes on chromosome arm 2BL based on their origin,chromosome positions and/or resistance spectrum,suggesting PmLS5082 is most likely a new Pm gene/*** clusters of orthologous groups and kyoto encyclopedia of genes and genomes analyses,differentially expressed genes(DEGs)associated with PmLS5082 were *** DEGs in the PmLS5082 interval were confirmed to be associated with PmLS5082 via qPCR analysis,using an additional set of wheat samples and time-course analysis postinoculation with Bgt isolate *** closely linked markers,including two kompetitive allele-specific PCR markers,were confirmed to be suitable for marker-assisted selection of PmLS5082 in different genetic backgrounds,thus can be used to detect PmLS5082 and pyramid it with other genes in breeding programs.

关键词： Wheat powdery mildew Bulked segregant RNA-seq(BSR-Seq) PmLS5082 Differentially expressed gene(DEG) Marker-assisted selection(MAS)

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

灌浆期开放式增温对不同小麦产量和品质的影响

引用

西北农业学报 2024年第9期33卷 1624-1631页

作者：肖延军单宝雪刘秀坤展晓孟刘百川黄金鑫穆平李豪圣刘建军高欣赵振东曹新有青岛农业大学农学院山东青岛266109 山东省农业科学院作物研究所/小麦玉米国家工程中心/农业部黄淮北部小麦生物学与遗传育种重点实验室/山东省小麦技术创新中心济南250100

为研究灌浆期开放条件下增温对不同小麦产量及品质的影响,采用开放式红外增温技术,以‘济麦22’和‘济麦44’为材料,于2020—2022年进行灌浆期白天增温来模拟未来气候变暖下温度升高对不同小麦产量及其构成因素和品质(主要是淀粉和蛋白... 详细信息

为研究灌浆期开放条件下增温对不同小麦产量及品质的影响,采用开放式红外增温技术,以‘济麦22’和‘济麦44’为材料,于2020—2022年进行灌浆期白天增温来模拟未来气候变暖下温度升高对不同小麦产量及其构成因素和品质(主要是淀粉和蛋白质)的影响。在本试验条件下,增温处理的两种小麦千粒质量和产量均呈现下降趋势,千粒质量下降3.3%~5.7%,产量损失2.0%~5.0%。增温使两个品种的淀粉含量降低1.4%~2.4%,白度降低1.6%~1.8%,面筋指数降低0.4%~3.6%。灌浆期增温处理增加了小麦籽粒蛋白含量,增幅为1.1%~9.6%,沉降值增加0.8%~11.9%。另外增温处理对两种小麦面粉的淀粉糊化特性产生了不同的影响,‘济麦22’面粉的低谷黏度和峰值黏度显著上升,最终黏度、回生值和糊化温度差异不显著;‘济麦44’面粉的低谷黏度、峰值黏度和最终黏度显著下降,回生值和糊化温度差异不显著。综上,在其他生育进程不变的情况下,灌浆期增温将会导致小麦减产,同时小麦籽粒物质组成也将发生复杂的变化,从而影响到小麦的品质。

关键词：灌浆期开放式增温冬小麦产量品质

来源：

维普期刊数据库博看期刊

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

济麦44/济麦229重组自交系群体籽粒蛋白质含量QTL分析

引用

山东农业科学 2024年第1期56卷 1-9页

作者：单宝雪刘秀坤肖延军展晓孟黄金鑫刘百川张玉梅李豪圣刘建军高欣曹新有赵振东青岛农业大学农学院山东青岛266109 山东省农业科学院作物研究所/小麦玉米国家工程中心/农业部黄淮北部小麦生物学与遗传育种重点实验室/山东省小麦技术创新中心山东济南250100

小麦籽粒蛋白质含量与面团流变学特性及加工特性的关系密不可分。本研究在2020—2021年济南试验基地(E1)及2021—2022年济南试验基地(E2)和济阳试验基地(E3)三个环境下,以“济麦44×济麦229”构建的包含285个家系的重组自交系群体(F2∶6... 详细信息

小麦籽粒蛋白质含量与面团流变学特性及加工特性的关系密不可分。本研究在2020—2021年济南试验基地(E1)及2021—2022年济南试验基地(E2)和济阳试验基地(E3)三个环境下,以“济麦44×济麦229”构建的包含285个家系的重组自交系群体(F2∶6RILs)为材料,利用小麦55K SNP芯片构建高密度遗传连锁图谱,对籽粒蛋白质含量进行QTL分析。结果共筛选到2344个SNP标记用于构建遗传连锁图谱,图谱总长度3349.95 cM,平均标记密度为1.43 cM/标记。通过对籽粒蛋白质含量的QTL分析,共检测到18个籽粒蛋白质含量相关QTL,分布在1A、1B、2B、3D、4B、4D、5A、5B、5D、7A、7B共11条染色体上。***.4B-1在E1、E2和E3三个环境和BLUE(最佳线性无偏估计)值中均被稳定检测到,可以解释3.26%~23.79%的表型变异。***.4D和***.5A在两个环境和BLUE值中被检测到,分别解释2.42%~11.18%和2.48%~5.47%的表型变异,且***.4D与小麦矮秆基因Rht-D1b物理位置重合。本研究中检测到的QTL新位点***.4B-1、***.4D和***.5A是控制籽粒蛋白质含量的主效基因,具有高表型变异解释率。本研究结果可为小麦品质育种提供分子标记及理论参考。

关键词：小麦籽粒蛋白质含量 QTL分析重组自交系 55K SNP芯片

来源：

维普期刊数据库

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Zeros of Complete Symmetric Polynomials over Finite Fields

引用

Journal of Systems Science & Complexity 2024年第4期37卷 1772-1788页

作者： cao Wei School of Mathematics and Statistics Minnan Normal UniversityZhangzhou 363000China

Wan and Zhang(2021) obtained a nontrivial lower bound for the number of zeros of complete symmetric polynomials over finite fields,and proposed a problem whether their bound can be *** this paper,the author improves Wan-Zhang's bound from three *** proposed results are based on the estimates related to the number of certain permutations and the value sets of non-permutation polynomials associated to the complete symmetric *** the author believes that there are still possibilities to improve the bounds and hence Wan-Zhang's bound.

关键词： Complete symmetric polynomial finite field permutation polynomial value set

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Pt nanodendrites with a PtIr alloy surface structure exhibit excellent stability toward acidic hydrogen evolution reaction

引用

Nano Research 2024年第6期17卷 4844-4849页

作者： Chang Liu Zongnan Wei Minna cao Rong cao State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China University of Chinese Academy of Sciences Beijing 100049China Fujian Science and Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou 350108China

The development of effective and stable electrocatalysts for the hydrogen evolution reaction(HER)in acidic electrolytes is a significant *** this work,homogeneous Pt nanodendrites(Pt NDs)with a PtIr shell were successfully synthesized by a two-step wet chemical *** open three-dimensional(3D)dendritic structure exhibited exceptional electrocatalytic characteristics,exposing as many active sites as ***,by alloying Ir with Pt on the surface,catalytic activity was greatly enhanced while ensuring extremely high *** surface-enriched platinum nanodendritic catalysts(Pt@PtIr NDs)outperformed the control samples and the commercial *** acidic HER test,Pt@PtIr NDs had a lower overpotential(22 mV)than Pt NDs(26 mV)and commercial Pt/C(31 mV)at 10 mA/cm^(2),and the activity of Pt@PtIr NDs remained consistent even after undergoing a continuous durability test for at least 168 h,which was much superior to the performance of commercial Pt/C(10 h)under identical test *** study revealed that the application of 3D Pt dendritic metal alloys may offer a chance for the development of enhanced electrocatalysts in acidic HER.

关键词： Pt nanodendrites iridium high stability hydrogen evolution reaction alloy

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Quantitative phase imaging based on holography:trends and new perspectives

引用

Light(Science & Applications) 2024年第7期13卷 1235-1277页

作者： Zhengzhong Huang Liangcai cao Department of Precision Instrument Tsinghua UniversityBeijing 100084China

In 1948,Dennis Gabor proposed the concept of holography,providing a pioneering solution to a quantitative description of the optical *** 75 years of development,holographic imaging has become a powerful tool for optical wavefront measurement and quantitative phase *** emergence of this technology has given fresh energy to physics,biology,and materials *** holography(DH)possesses the quantitative advantages of wide-field,non-contact,precise,and dynamic measurement capability for *** has unique capabilities for the propagation of optical fields by measuring light scattering with phase *** offers quantitative visualization of the refractive index and thickness distribution of weak absorption samples,which plays a vital role in the pathophysiology of various diseases and the characterization of various *** provides a possibility to bridge the gap between the imaging and scattering *** propagation of wavefront is described by the complex *** complex-value in the complex-domain is reconstructed from the intensityvalue measurement by camera in the ***,we regard the process of holographic recording and reconstruction as a transformation between complex-domain and real-domain,and discuss the mathematics and physical principles of *** review the DH in underlying principles,technical approaches,and the breadth of *** conclude with emerging challenges and opportunities based on combining holographic imaging with other methodologies that expand the scope and utility of holographic imaging even *** multidisciplinary nature brings technology and application experts together in label-free cell biology,analytical chemistry,clinical sciences,wavefront sensing,and semiconductor production.

关键词： holographic phase precise

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Dynamic Setting Method of Assessment Indicators for Power Curves of Renewable Energy Sources Considering Scarcity of Reserve Resources

引用

Journal of Modern Power Systems and Clean Energy 2024年第1期12卷 101-114页

作者： Minghao cao Jilai Yu the Department of Electrical Engineering Harbin Institute of TechnologyHarbinChina

With the increasing proportion of renewable energy sources(RESs)in power grid,the reserve resource(RR)scarcity for correcting power deviation of RESs has become a potential ***,the power curve of RES needs to be more rigorously *** RR scarcity varies during different time periods,so the values of assessment indicators should be dynamically *** assessment indicators in this paper include two aspects,i.e.,deviation exemption ratio and penalty ***,this paper proposes a method for dynamically calculating the supply capacity and RR cost,primarily taking into account the operating status of thermal units,forecast information of RES,and load ***,after clarifying the logical relationship between the degree of RR scarcity and the values of assessment indicators,this paper establishes a mapping function between *** on this mapping function,a dynamic setting method for assessment indicators is *** the future,RES will generally be equipped with battery energy storage systems(BESSs).Reasonably utilizing BESSs to reduce the power deviation of RESs can increase the expected income of ***,this paper proposes a power curve optimization strategy for RESs considering self-owned *** case study demonstrates that the dynamic setting method of assessment indicators can increase the revenue of RESs while ensuring that the penalty fees paid by RESs to the grid are sufficient to cover the RR ***,the power curve optimization strategy can help RESs further increase income and fully utilize BESSs to reduce power deviation.

关键词： Renewable energy battery energy storage system(BESS) power curve assessment reserve service parameter setting

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Bioinspired Closed-loop CPG-based Control of a Robotic Manta for Autonomous Swimming

引用

Journal of Bionic Engineering 2024年第1期21卷 177-191页

作者： Yiwei Hao Yonghui cao Yingzhuo cao Xiong Mo Qiaogao Huang Lei Gong Guang Pan Yong cao School of Marine Science and Technology Northwestern Polytechnical UniversityXi'an 710072China Unmanned Vehicle Innovation Center Ningbo Institute of NPUNingbo 315103China Key Laboratory of Unmanned Underwater Vehicle Technology of Ministry of Industry and Information Technology Xi'an 710072China

Fish in nature exhibit a variety of swimming modes such as forward swimming,backward swimming,turning,pitching,etc.,enabling them to swim in complex scenes such as coral *** is still difficult for a robotic fish to swim autonomously in a confined area as a real ***,we develop an untethered robotic manta as an experimental platform,which consists of two flexible pectoral fins and a tail fin,with three infrared sensors installed on the front,left,and right sides of the head to sense the surrounding *** generate multiple swimming modes of the robotic manta and online switching of different modes,we design a closed-loop Central Pattern Generator(CPG)controller based on distance information and use a combination of phase difference and amplitude of the CPG model to achieve stable and rapid adjustment of yaw *** verify the autonomous swimming ability of the robotic manta in complex scenes,we design an experimental scenario with a concave *** experimental results show that the robotic manta can achieve forward swimming,backward swimming,in situ turning within the concave obstacle,and finally exit from the area safely while relying on the perception of external obstacles,which can provide insight into the autonomous exploration of complex scenes by the biomimetic robotic ***,the swimming ability of the robotic manta is verified by field tests.

关键词： Biomimetic robotic manta Central Pattern Generator Closed-loop control Backward swimming

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：