检索结果-南通市图书馆

Comparative metabolomics provides novel insights into the basis of petiole color differences in celery(Apium graveolens L.)

引用

Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2022年第4期23卷 300-314页

作者： Mengyao LI Jie LI Haohan TAN Ya LUO Yong ZHANG Qing CHEN Yan WANG Yuanxiu LIN Yunting ZHANG Xiaorong WANG Haoru TANG College of Horticulture Sichuan Agricultural UniversityChengdu 611130China Institute of Pomology and Olericulture Sichuan Agricultural UniversityChengdu 611130China

Plant metabolites are important for plant development and human *** of celery(Apium graveolens L.)with different-colored petioles have been formed in the course of long-term ***,the composition,content distribution,and mechanisms of accumulation of metabolites in different-colored petioles remain *** ultra-high performance liquid chromatography-tandem mass spectrometry(UHPLC-MS/MS),1159 metabolites,including 100 lipids,72 organic acids and derivatives,83 phenylpropanoids and polyketides,and several alkaloids and terpenoids,were quantified in four celery cultivars,each with a different petiole *** were significant differences in the types and contents of metabolites in celery with different-colored petioles,with the most striking difference between green celery and purple celery,followed by white celery and green *** analysis of metabolic pathways showed that the metabolites of the different-colored petioles were significantly enriched in biosynthetic pathways such as anthocyanin,flavonoid,and chlorophyll pathways,suggesting that these metabolic pathways may play a key role in determining petiole color in *** content of chlorophyll in green celery was significantly higher than that in other celery cultivars,yellow celery was rich in carotenoids,and the content of anthocyanin in purple celery was significantly higher than that in the other celery *** color of the celery petioles was significantly correlated with the content of related *** the four celery cultivars,the metabolites of the anthocyanin biosynthesis pathway were enriched in purple *** results of quantitative real-time polymerase chain reaction(q RT-PCR)suggested that the differential expression of the chalcone synthase(CHS)gene in the anthocyanin biosynthesis pathway might affect the biosynthesis of anthocyanin in *** addition,HPLC analysis revealed that cyanidin is the main pigment in purple *** stud

关键词： celery Metabolite Anthocyanin Chlorophyll Petiole color

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

Effects of topdressing ratio and frequency on the dry matter, yield, and quality of tomato and celery under a small amount of continuous subsurface drip irrigation

引用

International Journal of Agricultural and Biological Engineering 2023年第3期16卷 273-284页

作者： Lingmiao Huang Peiling Yang Haobo Cui Zhanghao Sun Shumei Ren Zhaocheng Wang College of Water Resources and Civil Engineering China Agricultural UniversityBeijing 100083China Management Committee of Xiamen Longyan Mountainous&Coastal Cooperative Economic Zone Longyan 364000FujianChina Beijing Engineering Corporation Limited Beijing 100024China Hebei University of Water Resources and Electric Engineering Cangzhou 061001HebeiChina Lingnan Water Group Corporation Limited Beijing 100062China

Compared with conventional full irrigation,the existing water-saving irrigation method achieves the purpose of water saving by actively controlling soil ***-frequency irrigation can make the ideal conditions for soil water movement and root absorption of water and *** research used a plot experiment in a greenhouse and set up different fertilization amounts and frequencies during the growth stage to study the effects of small-amount and continuous subsurface drip irrigation on the dry matter,yield,and quality of tomato and *** results showed that the frequency of topdressing had a great influence on the dry matter accumulation of tomatoes,and the amount of topdressing had little effect on the fresh weight of the upper part of a tomato *** application of high-frequency fertilizer increased the dry matter accumulation in the underground part of the *** the premise given amount of total fertilization,the growth rate and yield of tomatoes were positively correlated with the amount of *** optimum fertilization frequency was 1 time during the first fruit stage,3 times for the second fruit stage,and 5 times for the third fruit stage,the yield during the fourth stage was increased with higher frequency,and the topdressing was started ahead of the fourth fruit stage when the diameter of fruit was 40 *** lower fertilization frequency during the early stage and higher fertilization frequency during the later stage can increase the yield of *** higher ratio of topdressing,the higher frequency during the early growth stage,and the lower frequency during the later stage can achieve the best quality of celery.

关键词： fertilization frequency continuous subsurface drip irrigation topdressing fertilizer tomato celery

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

Genotype variations in accumulation of cadmium and lead in celery （Apium graveolens L.） and screening for low Cd and Pb accumulative cultivars

引用

Frontiers of Environmental Science & Engineering 2013年第1期7卷 85-96页

作者： Kun ZHANG Jianbing WANG Zhongyi YANG Guorong XIN Jiangang YUAN Junliang XIN Charlie HUANG State Key Laboratory for Biocontrol School of Life Sciences Sun Yat-sen University Guangzhou 510275 China California Department of Fish and Game/OSPR/Scientific Division Sacramento CA 94244-2090 USA

To help reduce risks of heavy metal pollution, two pot experiments were conducted to investigate the variations, transfer potential, and stability of Cadmium (Cd) and Lead (Pb) accumulations in celery ( L.) and to screen for low Cd and Pb accumulative cultivars. The maximum differences in shoot Cd concentration were 4.7-fold under low-Cd exposure and 3.3-fold under high-Cd exposure. These genotype variations in Cd accumulation are sufficiently large to help reduce Cd contamination risk in soil by using the Low-Cd-Accumulative genotypes. Cd accumulation of the Low-Cd-Accumulative genotypes is significantly positive correlated with Pb accumulation. Evidence obtained proves that Cd and Pb accumulations in celery are stable and genotype-dependent at the cultivar level. The presence of high-Pb contamination in soil promoted Cd accumulation in shoots of celery. celery is considered a species with high risks in Cd pollution and low risks in Pb pollution. Among the tested cultivars, cv. Shuanggangkangbing (SGKB) had the lowest shoot Cd and Pb accumulating abilities, and thus is the most important material for breeding of pollution-safe cultivars (PSCs) to minimize Cd and Pb accumulations in celery.

关键词： cadmium (Cd) accumulation lead (Pb) accumulation celery genotype variation food safety

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

Identification and quantification of benzimidazole metabolites of thiophonate-methyl sprayed on celery cabbage using SiO_2@NiO solid-phase extraction in combination with HPLC-MS/MS

引用

Chinese Chemical Letters 2020年第2期31卷 482-486页

作者： Qiongwei Yu Shijie Liu Feng Zheng Huaming Xiao Hongyan Guan Yuqi Feng Key Laboratory of Analytical Chemistry for Biologyand Medicine(Ministry of Education) Department of ChemistryWuhan UniversityWuhan 430072China Quality Management Department Wuhan Hiteck Biological Pharma Co.Ltd.Wuhan 430056China

Thiophonate-methyl(TPM) is one of fungicides and pesticides widely used in agriculture ***,the residue of its benzimidazole(BZD) metabolites in related agricultural products poses a potential risk to *** this paper,nickel oxide nanoparticle-deposited silica(SiO_2@NiO) composite was used for the selective enrichment and purification of TPM's BZD metabolites in celery cabbage sprayed with ***,high-performance liquid chromatography coupled with precursor ion scan-mass spectrometry(HPLC-PIS-MS) and high-resolution MS/MS analysis(HR-MS/MS) was utilized for their qualitative and quantitative ***-one potential TPM's BZD metabolites were found and four of them were *** metabolite was discovered for the first ***,a robust and sensitive quantitative method was developed with good linearities(R^2> 0.9972) within a wide range of 10.00-1000 ng/*** detection limits of three known TPM's metabolites were within the range of 3.20-4.90 ng/*** standard deviations(RSDs) of intra-day and inter-day precisions were less than 18.3%,which showed perfect *** method was successfully applied to monitoring TPM's BZD metabolites in celery cabbage sprayed with TPM and the concentration versus time curves of TPM's metabolites in celery cabbage were *** method is expected to be used to monitor BZD residues in various fruits and vegetables.

关键词： Thiophonate-methyl Benzimidazole metabolites Precursor ion scan-mass spectrometry High-resolution MS/MS analysis celery cabbage

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

Development and Evaluation of a Loop-mediated Isothermal Amplification Assay for the Rapid Detection and Identification of Pectobacterium carotovorum on celery in the Field

引用

Horticultural Plant Journal 2020年第5期6卷 313-320页

作者： Yanxia Shi Zhiwen Jin Xianglong Meng Lixue Wang Xuewen Xie Ali Chai Baoju Li Institute of Vegetables and Flowers Chinese Academy of Agricultural SciencesBeijing 100081China

Pectobacterium carotovorum is the causal agent of bacterial soft rot in a wide range of vegetable host *** *** infects the plant,the spread of the disease is difficult to *** this study,a rapid and sensitive method based on loop-mediated isothermal amplification(LAMP)was developed for detecting *** in celery with soft rot using a primer set designed from the pmrA conserved sequence of *** specificity of the LAMP primer set for *** was extensively validated on both *** strains and nontarget *** sensitivity was 1 pg of *** genomic DNA,which demonstrated 10 times more sensitive than the conventional PCR *** was also used to detect *** in bacterial *** lowest detection concentration was 104 CFU·mL^−*** addition,a LAMP assay,in conjunction with a crude DNA extraction method,was successfully performed on ***-infected samples derived from both artificially and naturally infected *** summary,the LAMP assay established in this study constitutes a simple,sensitive,and rapid method for the detection of ***,and has potential application in the control of celery soft rot disease through early detection.

关键词： Bacterial soft rot P.carotovorum Loop-mediated isothermal amplification(LAMP) celery pmrA gene field detection

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

Dynamic changes in soil chemical properties and microbial community structure in response to different nitrogen fertilizers in an acidified celery soil

引用

Soil Ecology Letters 2019年第3期1卷 105-113页

作者： Yuping Wu Jiangxing Wu Yongjun Ma Ying Lian Hui Sun Danchao Xie Yaying Li Philip C.Brookes Huaiying Yao Key Laboratory of Urban Environment and Health Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China Ningbo Agriculture Bureau Ningbo 315012China Ningbo Institute of Standardization Ningbo 315040China Ningbo Urban Environment Observation and Research Station Chinese Academic SciencesNingbo 315830China College of Environmental and Natural Resource Sciences Zhejiang Provincial Key Laboratory of Subtropical Soil and Plant NutritionZhejiang UniversityHangzhou 310058China

To determine the effects of different kinds of nitrogen fertilizer,especially high-efficiency slowrelease fertilizers,on soil pH,nitrogen(N)and microbial community structures in an acidic celery soil,four treatments(CK,no N fertilizer;NR,urea;PE,calcium cyanamide fertilizer;and SK,controlled-release N fertilizer)were applied,and soil pH,total soil N,inorganic N,and soil microbial biomass C were *** fatty acids(PLFAs)were extracted and detected using the MIDI Sherlock microbial identification *** PE treatment significantly improved soil pH,from 4.80 to>6.00,during the whole growth period of the celery,and resulted in the highest celery yield among the four *** 14 d application of calcium cyanamide,the soil nitrate content significantly decreased,but the ammonium content significantly *** PE treatment also significantly increased soil microbial biomass C during the whole celery growth *** variate analysis of the PLFA data indicated that the soil microbial community structure in the CK treatment was significantly different from those in the N applied treatments after 49 d ***,there was a significant difference(Pcelery land because it supplies sufficient N,and increases soil pH,microbial biomass and the yield of celery.

关键词： Acidified Calcium cyanamide celery Phospholipid fatty acid Soil nitrogen

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

Effects of Different Drip Irrigation Fertilizers on Nutrient Levels in celery and Soil under Drip Irrigation

引用

Agricultural Biotechnology 2017年第2期6卷 34-40,44页

作者： Jun YANG Xiaojuan LIAN Yan WANG Yuliang ZHANG Zhengxiang WANG Tianjin Institute of Agricultural Resources and Environment Sciences

This study was conducted to investigate the effects of different fertilizers on nitrogen, phosphorus and potassium ＇absorption and distribution by celeo, and the changes of soil nutrients in the 0 -40 cm soil layer under drip irrigation, so as to provide a theoretical basis for nutrient management of greenhouse celery culti- vation and special fertilizer development. With celery as an experiment material and the ratio of conventional fertilization as control treatment, the effects of different ratios of nitrogen, phosphorus and potassium on nutrient absorption by celery and changes of soil nutrients were investigated by plot experiment in greenhouse. The results showed that the contents and distribution proportions of N and P in leaf were higher than those in stem, while for K, the content and distribution proportion were higher in stem than in leaf. The absorption amount of K was the highest in celery, followed by N, and the absorption amount of P element was the least. The mean ratio of N, P and K in celery was 1：0.556： 1.609. There were evident dynamic changes in contents of soil available nutrients in the 0 -20 cm soil layer in various growth stages of celery under different drip irrigation fertilizers. The contents of soil available nutrients were higher on the 28＇h , 47~ and 83＇h d ＂after fieht planting, while those before field planting and after harvest were lower. So the amounts of soil available nutrients were closely related to the growth stage of celery. In the whole growth period of celery, the mean input amounts of N, P205 and K20 were 805, 1 049 and 916 kg/hm2 , respectively, but the absorption amounts of nutrients by celery were far less than inputs, and the amounts of N, P205 and K20 absorbed by celery＂ were only 23% -26% , 10% and 31% -35% of the appli- cation amounts, respectively. The apparent balance of N, P2 O5 and Kz O were 613,943 and 609 kg/hm2 , respectively, indicating excess fertilization in this experi- ment. Under this experiment condit

关键词： Drip irrigation Fertilizer for drip irrigation celery Soil nutrient Apparent balance

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 Genetic Relationship among celery Germplasms by RAPD

引用

Agricultural Biotechnology 2014年第2期3卷 10-13页

作者： Pangyuan LIU Baohai ZHANG Hong ZHAO Weiming HE Huijie WANG National Engineering Research Center for Vegetables

In this study, forty celery cultivars introduced from different regions of China were used as experimental materials to verify and analyze the practicability of RAPD technology in the identification of celery cuhivars. The results showed that RAPD technology could distinguish accurately the genetic relationship among various celery cultivars as a simple and ideal DNA molecular marker technology suitable for genetic relationship analysis. To be specific, 13 RAPD primers with clear amplified bands and significantly different number of amplified bands were screened, which provided basis for the identification of genetic relationship among different celery cultivars.

关键词： celery RAPD Genetic relationship

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

基于Django和celery框架的进度管理平台的设计与实现

基于Django和Celery框架的进度管理平台的设计与实现

引用

作者：吴斌华中科技大学

学位级别：硕士

在项目版本迭代的过程中,为了从不同的角度控制项目质量,往往会通过各种平台对项目进行检测,这些质量标准影响着项目进度的推进。随着对项目要求标准的提高和项目管理工具的发展,质量标准也会越来越多。为了更好的管理项目组在这些平台... 详细信息

在项目版本迭代的过程中,为了从不同的角度控制项目质量,往往会通过各种平台对项目进行检测,这些质量标准影响着项目进度的推进。随着对项目要求标准的提高和项目管理工具的发展,质量标准也会越来越多。为了更好的管理项目组在这些平台中的版本数据,建立一个进度管理的系统,对项目组进度进行统一的整合和管理,无疑是十分必要的。经过对进度管理相关理论知识的分析,并结合公司业务需求的实际情况,提出了通过进度管理平台来实现对项目进度的管理。平台主要包括用户管理,项目进度管理,项目报告管理三大功能模块。针对项目组中的不同权限,不同职位的用户,提供不同的功能服务。在技术层面上,系统主要使用Python Web框架Django与并行分布式框架celery。Django以MVC设计模式为基础,构造了以模型、模版和视图为核心的架构体系,对HTTP请求进行分发、处理和反馈。Django通过这种封装程度更高,前后端交互更直接的MTV模式提供了系统的Web服务部分。celery则是一个具有并行处理和分布式处理机制的消息任务处理系统。它使用任务调度器调用定期任务,通过消息中间件管理任务队列,最终将任务交给并行架构下的任务执行单元。这种消息任务机制很好的处理了系统后台的重量级任务。系统主要实现了项目进度查询,项目进度通知,项目报告发送,历史数据展示等核心功能。不仅为项目成员提供了定制化的项目进度信息服务,也项目管理者提供便捷规范的项目进度管理体系。同时,积累的版本数据也可以帮助项目组在后续迭代中更好的保障和优化项目质量。

关键词： Django MTV模式 celery 并行架构进度管理

来源：

同方学位论文库评论

在线全文

同方学位论文库

学校读者我要写书评

暂无评论

基于celery和Django的分布式自动化测试系统设计

引用

信息技术 2019年第5期43卷 97-100页

作者：李一风上海你我贷互联网金融信息服务有限公司上海200120

为了实现快速高效使用计算集群解决大量测试用例管理和执行的问题,文中提出了一种基于celery和Django的分布式自动化测试系统。该系统提出了由API服务器层、用例管理层、任务调度层和任务执行层组成四层架构,详细描述了每层的功能和具... 详细信息

为了实现快速高效使用计算集群解决大量测试用例管理和执行的问题,文中提出了一种基于celery和Django的分布式自动化测试系统。该系统提出了由API服务器层、用例管理层、任务调度层和任务执行层组成四层架构,详细描述了每层的功能和具体实现。该系统实现了用例的管理、分布式执行、失败重试等功能。该系统能够快速部署和配置测试执行节点,实现了充分利用计算集群资源、提高测试效率的目的。

关键词：自动化测试分布式 celery Django

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

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：