检索结果-南通市图书馆

Genome wide association analysis identifies candidate genes for fruit quality and yield in Actinidia eriantha

Journal of Integrative agriculture 2024年第6期23卷 1929-1939页

作者： Yingzhen Wang Ying Wu Xinlei Wang Wangmei Ren Qinyao Chen Sijia Zhang Feng Zhang Yunzhi Lin Junyang Yue Yongsheng Liu School of Horticulture Anhui Agricultural UniversityHefei 230036China School of Forestry Science and Technology Lishui Vocational and Technical CollegeLishui 323000China college of Life Science Sichuan UniversityChengdu 610064China

Quality and yield are the primary concerns in kiwifruit breeding,but research on the genetic mechanisms of fruit size,shape,and ascorbic acid(ASA)content is currently very limited,which restricts the development of kiwifruit molecular *** this study,we obtained a total of 8.88 million highly reliable single nucleotide polymorphism(SNP)markers from 140 individuals from the natural hybrid offspring of Actinidia eriantha cv.‘White’using whole genome resequencing technology.A genome-wide association study was conducted on eight key agronomic traits,including single fruit weight,fruit shape,ASA content,and the number of inflorescences per branch.A total of 59 genetic loci containing potential functional genes were located,and candidate genes related to single fruit weight,fruit length,ASA content,number of inflorescences per branch and other traits were identified within the candidate interval,such as AeWUSCHEL,AeCDK1(cell cycle dependent kinase),AeAO1(ascorbic oxidase)and AeCO1(CONSTANS-like 4).After constructing an RNAi vector for AeAO1 and injecting it into the fruit of cv.‘Midao 31’to interfere with the expression of the AeAO1 gene,the results showed that the activity of ascorbic oxidase in the fruit of‘Midao 31’significantly decreased,while the content of ASA significantly *** study provides valuable insights into the genetic basis of variation in *** fruit traits,which may benefit molecular marker-assisted breeding efforts.

关键词： Actinidia eriantha GWAS SNP QTLs fruit quality

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

Optimization design and experiment of the variable differential gear train planting mechanism

引用

International Journal of Agricultural and Biological Engineering 2024年第2期17卷 85-93页

作者： Xiong Zhao Ziwei Liu Yuanwu Jia Xingxiao Ma Pengfei Zhang Jianneng Chen School of Mechanical Engineering Zhejiang Sci-Tech UniversityHangzhou 310018China Xi’an International University Engineering college Xi’an 710077China Hangzhou vocational&technical college Hangzhou 310018China

In order to improve the adaptability of the planting mechanism for different plant spacings,a variable differential gear train planting mechanism based on precise pose and trajectory control was proposed by combining the open chain 2R rod group and the variable differential gear *** to the pose requirements of receiving seedling point,transporting seedling point and planting point,three precise pose points of constrained planting trajectory were *** the three-position motion generation structural synthesis method,combined with computer-aided optimization design software,a set of mechanism parameters that meet the planting requirements were *** on the optimized mechanism parameters,by only changing the coordinates of two trajectory shape control points,three planting trajectories with key point position information adapted to 300 mm,400 mm and 500 mm plant spacing were obtained by interpolation,and three pairs of total transmission ratio of three groups of variable differential gear trains were *** distributing the total transmission ratio of the mechanism,the fixed axis gear train and the differential gear train are *** fixed axis gear train included a pair of non-circular gear pairs and a pair of positive gear pairs,which were convenient for disassembly and *** former drives the sun gear at variable speed,and the latter drives the planet carrier at uniform *** on this structure,the transmission ratio of the positive gear pair is-1,and the transmission ratio of the differential gear train is *** sub-transmission ratio of the single-stage non-circular gear pair was calculated and the pitch curves of three pairs of noncircular gears were *** pairs of non-circular gear pairs with different transmission ratios were replaced in turn and three sets of planting mechanisms were modeled in three *** virtual prototype motion simulation was completed by ADAMS software,and the p

关键词： plant spacing planting mechanism variable differential gear train precise pose trajectory control parameter optimization

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

Analysis of the Current Situation and Influencing Factors of Knowledge,Attitude,and Practice of Nursing Informatics Among Intern Nursing Students

引用

Journal of Clinical and Nursing Research 2024年第4期8卷 7-13页

作者： Ping Zhao Xiao Ling Ma First Affiliated Hospital of Kunming Medical University Kunming 650000Yunnan ProvinceChina Medical School Xishuangbanna Vocational and Technical CollegeJinghong 666100Yunnan ProvinceChina

Objective:To investigate the current situation of knowledge,attitude,and practice(KAP)of nursing informatics for intern nursing ***:A total of 213 intern nursing students were selected as ***:The total score of the questionnaire of knowledge dimension was 10.32±3.23;the score of attitude dimension was 58.78±6.80;the score of practice dimension was 29.06±*** regression analysis showed that further learning plans,telemedicine hospital intern experience,self-learning ability,and telecare training were the related influencing factors of KAP(P<0.05).Conclusions:The current KAP level of nursing informatics among intern nursing students was low to ***,the strengthening of school courses and skill training programs is urgently needed.

关键词： Nursing informatics KAP Influence factors Intern nurses

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

Sclerodermus alternatusi(Hymenoptera:Bethylidae),a new species from China,parasitizing Monochamus alternatus(Coleoptera:Cerambycidae)

引用

Zoological Systematics 2024年第3期49卷 258-266页

作者： Zhongqi Yang Xiaoyi Wang Zhaoyao Duan Yanlong Zhang Yi’nanZhang Liangming Cao Ke Wei Key Lab of Forest Protection National Forestry and Grassland AdministrationEcology and Nature Conservation InstituteChinese Academy of ForestryBeijing 100091China Research Institute of Biological Control Beijing Vocational College of AgricultureBeijing 102442China Research Institute of Forest Protection Yunnan Academy of Forestry and GrasslandKunming 650201China

A new species,Sclerodermus alternatusi Yang,***.(Hymenoptera:Bethylidae),is described and *** cerambycid host,Monochamus alternatus Hope,a severe wood borer attacking many pine trees(Pinus spp.),is also a vector of pine wood nematode,Bursaphelencus xylophilus,which cause severe damages to pine forests in *** new species is a gregarious ectoparasitoid of junior larva of *** number of adult wasps reared from a single host larva ranges from 6 to *** ratio of female to male is 20:*** new parasitoid species has a high potential in using as a biocontrol agent for the wood *** of the new species with comparisons to its related species,*** Yang&Yao and a key to known species of Sclerodermus from China is provided.

关键词： Ectoparasitoid larval parasitoid taxonomy biological control

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

Design and experimental study of the end-effector for broccoli harvesting

引用

International Journal of Agricultural and Biological Engineering 2024年第1期17卷 137-144页

作者： Xiong Zhao Gangji Xu Pengfei Zhang Gaohong Yu Yadan Xu Faculty of Mechanical Engineering Zhejiang Sci-Tech UniversityHangzhou 310018China Key Laboratory of Transplanting Equipment and Technology of Zhejiang Province Hangzhou 310018China Hangzhou vocational&technical college Hangzhou 310018China

The end-effector is an important part of the broccoli harvesting *** at the physical characteristics of a large broccoli head and thick stem,a spherical cutting tool broccoli harvesting end-effector was designed in this ***,the physical characteristics of broccoli were tested,and physical parameters such as the broccoli head diameter and stem diameter of broccoli were *** maximum cutting force of broccoli stems under different cutting angles was ***,according to the physical characteristics and harvesting process of broccoli,the end-effector was designed,and the mathematical model of kinematics and dynamics was *** on the results of dynamic analysis,the end-effector rod was optimized,and the unilateral width of the slider was 40 mm,the length of the connecting rod was 120 mm,and the length of the crank was 42 *** mechanism needed an external driving force of 140.54 N to cut the broccoli ***,a 32 mm cylinder with a load rate of 50%was selected as the power ***,the feasibility of the broccoli harvesting end-effector was verified by the harvesting *** showed that the overall harvesting success rate of the end-effector is 93.3%,and the smoothness rate of the stem section is 83.3%.The harvesting performance of the broccoli end-effector was *** lays a foundation for agricultural robots to harvest broccoli.

关键词： harvesting robot broccoli end-effector dynamic analysis mechanism optimization

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

Research on the Implementation Path of Ideological and Political Education in the“Horticultural Plant Production Technology”Course under the Rural Revitalization Strategy

引用

Journal of Contemporary Educational Research 2024年第8期8卷 32-37页

作者： Yuhong Yuan Fujian Forestry vocational technical college Nanping 353000Fujian ProvinceChina

The horticultural industry plays an important role in the rural revitalization *** the core course of horticultural technology,“Horticultural Plant Production Technology”shoulders an important mission in serving the rural revitalization strategy and cultivating a group of rural revitalization talents who truly love agriculture,know agricultural techniques,and understand *** the dimension of ideological and political education in the curriculum,based on the strategy of rural revitalization,the implementation path of ideological and political education in the curriculum is expanded and improved from the construction of education models,curriculum team building,excavation of ideological and political elements,and construction of evaluation systems,in order to improve the level of ideological and political education in horticultural plant production technology courses and provide certain reference and guidance for the ideological and political construction of similar agricultural vocational education courses.

关键词： Rural revitalization Agricultural vocational education Ideological and political education Implementation path

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

Formulation of Work-Study Combined and Result-Oriented Integrated Curriculum Standards

引用

Medicinal Plant 2024年第3期15卷 79-83页

作者： Lianfang LI Chunhua DU Fen YANG Yun LI Yanfei NIU yunnan Technician college(yunnan Industry Trade vocational college) Kunming 650300China yunnan Baiyao Group Traditional Chinese Medicine Resources Co. Ltd.Kunming 650300China

According to the Annex technical Regulations for Integrated Curriculum Development(Trial)in Document No.30 of the General Office of the Ministry of Human Resources and Social Security(2012),this paper studies the formulation of the curriculum standards for the integration of Chinese medicinal materials *** focus on the formulation ideas of the curriculum standards for the integration of Chinese medicinal materials production,the formulation process of the curriculum standards for the integration of Chinese medicinal materials production,including the description of typical work tasks,the determination of curriculum objectives,the analysis of study content,the description of referential study tasks,teaching implementation suggestions,assessment and evaluation suggestions,which can provide a reference for the development and research of other related integrated courses.

关键词： Integration of work and study Work process Curriculum standards Production of Chinese medicinal materials Typical work tasks Referential study tasks

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

Social Cost Analysis of Biological Control Technology for Crop Diseases and Insect Pests

引用

Asian Agricultural Research 2024年第8期16卷 14-16页

作者： Jie XIE Lingling XIAO Jinyu ZHAO Shoumei WAN Jian TANG Xiaolei JI Jing PENG Guiyang Customs Logistics Management Center Guiyang 550081China Guizhou Light Industry vocational and technical college Guiyang 561000China

With the rapid development of modern agriculture,the prevention and control of crop diseases and insect pests has become an important part to ensure the safety of agricultural production,the quality of agricultural products and the safety of agricultural ecological *** the effect of traditional chemical prevention and control technology is remarkable,the health risks and environmental problems brought by it should not be *** a green and environmentally friendly means of prevention and control,biological prevention and control technology has gradually become a hot research topic and a trend of agricultural *** paper is intended to comprehensively evaluate the social costs of biological control technologies for crop diseases and pests,including the health risks reduced,environmental improvements,economic benefits,and barriers to promotion,and put forward corresponding policy recommendations.

关键词： Crops Diseases and insect pests Biological control Social cost

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

Research Progress on Effects of Continuous Cropping on Soil Microbial Florae and Its Restoration

引用

Agricultural Biotechnology 2024年第2期13卷 75-80页

作者： Zaixiang ZHU Zebin CHEN Shengguang XU Zhiwei FAN Li LIN Tianfang WANG Qingmei LI Yue YAN agriculture and Life Sciences college Kunming UniversityKunming 650214China Office of Academic Affairs Kunming UniversityKunming 650201China yunnan Institute of Biological Carbon Engineering Research Center Kunming 650214China

Continuous cropping has become a common form of agricultural production at present, but with the increase of continuous cropping years, continuous cropping obstacles such as soil-borne diseases and plant growth potential decline are becoming more and more common. At present, the causes of continuous cropping obstacles and continuous cropping restoration have become a hot issue in agricultural research. This paper summarized the effects of continuous cropping obstacles on soil microbial community structure and main technical methods to repair continuous cropping obstacles, such as agricultural measure management, microbial balance adjustment and soil improvement, aiming to provide theoretical reference for protecting the sustainable utilization of soil ecosystem and ensuring the stability of crop production.

关键词： Continuous cropping obstacle Rhizosphere soil Microorganism Soil remediation Soil improvement

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

The evolution,pathogenicity and transmissibility of quadruple reassortant H1N2 swine influenza virus in China:A potential threat to public health

引用

Virologica Sinica 2024年第2期39卷 205-217页

作者： Xinxin Cui Jinhuan Ma Zifeng Pang Lingzhi Chi Cuishan Mai Hanlin Liu Ming Liao Hailiang Sun college of Veterinary Medicine South China Agricultural UniversityGuangzhou510642China Key Laboratory of Zoonosis Control and Prevention of Guangdong Province South China Agricultural UniversityGuangzhou510642China National and Regional Joint Engineering Laboratory for Medicament of Zoonosis Prevention and Control South China Agricultural UniversityGuangzhou510642China Shandong vocational Animal Science and Veterinary college Weifang261061China Institute of Animal Health Guangdong Academy of Agricultural SciencesGuangzhou510640China

Swine are regarded as“intermediate hosts”or“mixing vessels”of influenza viruses,capable of generating strains with pandemic *** 2020 to 2021,we conducted surveillance on swine H1N2 influenza(swH1N2)viruses in swine farms located in Guangdong,yunnan,and Guizhou provinces in southern China,as well as Henan and Shandong provinces in northern *** systematically analyzed the evolution and pathogenicity of swH1N2 isolates,and characterized their replication and transmission *** isolated viruses are quadruple reassortant H1N2 viruses containing genes from pdm/09 H1N1(PB2,PB1,PA and NP genes),triple-reassortant swine(NS gene),Eurasian Avian-like(HA and M genes),and recent human H3N2(NA gene)*** NA,PB2,and NP of SW/188/20 and SW/198/20 show high gene similarities to A/Guangdong/Yue Fang277/2017(H3N2).The HA gene of swH1N2 exhibits a high evolutionary *** five swH1N2 isolates replicate efficiently in human,canine,and swine cells,as well as in the turbinate,trachea,and lungs of mice.A/swine/Shandong/198/2020 strain efficiently replicates in the respiratory tract of pigs and effectively transmitted among ***,these current swH1N2 viruses possess zoonotic potential,highlighting the need for strengthened surveillance of swH1N2 viruses.

关键词： Swine influenza virus(SIV) H1N2 Evolution Replication Pathogenicity Zoonotic potential

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：