目的为提高尾鳍驱动型水下机器人的工作效率,优化尾鳍驱动装置的硬件和软件提供理论支撑。方法将中国知网数据库与Web of Science数据库作为研究数据来源,对相关文献进行系统梳理,使用Citespace和VOSviewer软件对文献作者、所属机构、...目的为提高尾鳍驱动型水下机器人的工作效率,优化尾鳍驱动装置的硬件和软件提供理论支撑。方法将中国知网数据库与Web of Science数据库作为研究数据来源,对相关文献进行系统梳理,使用Citespace和VOSviewer软件对文献作者、所属机构、关键词和研究热点进行可视化图谱绘制。结果通过对文献的分析,确定三个热点研究方向,分别是尾鳍驱动装置的外形结构设计、驱动方式和控制系统设计、材料设计,并根据各研究方向提炼出对应的研究方法:基于设计形态学、结构仿生学和工程优化的外形结构设计方法,基于自下而上和模块化的驱动方式设计方法,基于滑模控制、模糊控制和PID控制系统设计方法,以及基于仿生材料、智能材料和计算机模拟的材料设计方法等。结论对目前尾鳍驱动型机器人的主要研究内容、优势特点、存在问题、设计方法和未来趋势进行总结,为相关领域的发展提供参考和依据。展开更多
Peanut pod shape is a heritable trait which affects the market acceptance of in-shell peanut products.In order to determine the genetic control of pod shape,six component traits of pod shape(pod length,pod width,pod l...Peanut pod shape is a heritable trait which affects the market acceptance of in-shell peanut products.In order to determine the genetic control of pod shape,six component traits of pod shape(pod length,pod width,pod length/width ratio,pod roundness,beak degree and constriction degree)were measured using an image-based phenotyping method.A recombinant inbred line(RIL)population consisting of 181 lines was phenotyped across three environments.Continuous distributions and transgressive segregations were demonstrated in all measured traits and environments.Significant correlations were found among most component traits with broad-sense heritability ranging from 0.87 to 0.95.Quantitative trait locus(QTL)analysis yielded 26 additive QTLs explaining 3.79 to 52.37%phenotypic variations.A novel,stable and major QTL region conditioning multiple shape features was detected on chromosome 2,which spans a 10.81-Mb genomic region with 543 putative genes.Bioinformatics analysis revealed several candidate genes in this region.In addition,73 pairs of epistatic interactions involving 92 loci were identified for six component traits explaining 0.94–6.45%phenotypic variations.These results provide new genetic loci to facilitate genomics-assisted breeding of peanut pod shape.展开更多
文摘目的为提高尾鳍驱动型水下机器人的工作效率,优化尾鳍驱动装置的硬件和软件提供理论支撑。方法将中国知网数据库与Web of Science数据库作为研究数据来源,对相关文献进行系统梳理,使用Citespace和VOSviewer软件对文献作者、所属机构、关键词和研究热点进行可视化图谱绘制。结果通过对文献的分析,确定三个热点研究方向,分别是尾鳍驱动装置的外形结构设计、驱动方式和控制系统设计、材料设计,并根据各研究方向提炼出对应的研究方法:基于设计形态学、结构仿生学和工程优化的外形结构设计方法,基于自下而上和模块化的驱动方式设计方法,基于滑模控制、模糊控制和PID控制系统设计方法,以及基于仿生材料、智能材料和计算机模拟的材料设计方法等。结论对目前尾鳍驱动型机器人的主要研究内容、优势特点、存在问题、设计方法和未来趋势进行总结,为相关领域的发展提供参考和依据。
基金supported by the National Natural Science Foundation of China(32001584)the Natural Science Foundation of Shandong Province,China(ZR202111290099)+2 种基金the Breeding Project from Department Science&Technology of Shandong Province,China(2020LZGC001)the Agricultural Scientific and the Technological Innovation Project of Shandong Academy of Agricultural Sciences,China(CXGC2022A21,CXGC2022A03,and CXGC2023A06(A39 and A46))the Qingdao People’s Livelihood Science and Technology Program,China(20-3-4-26-nsh)。
文摘Peanut pod shape is a heritable trait which affects the market acceptance of in-shell peanut products.In order to determine the genetic control of pod shape,six component traits of pod shape(pod length,pod width,pod length/width ratio,pod roundness,beak degree and constriction degree)were measured using an image-based phenotyping method.A recombinant inbred line(RIL)population consisting of 181 lines was phenotyped across three environments.Continuous distributions and transgressive segregations were demonstrated in all measured traits and environments.Significant correlations were found among most component traits with broad-sense heritability ranging from 0.87 to 0.95.Quantitative trait locus(QTL)analysis yielded 26 additive QTLs explaining 3.79 to 52.37%phenotypic variations.A novel,stable and major QTL region conditioning multiple shape features was detected on chromosome 2,which spans a 10.81-Mb genomic region with 543 putative genes.Bioinformatics analysis revealed several candidate genes in this region.In addition,73 pairs of epistatic interactions involving 92 loci were identified for six component traits explaining 0.94–6.45%phenotypic variations.These results provide new genetic loci to facilitate genomics-assisted breeding of peanut pod shape.
