检索结果-南通市图书馆

Tolerance of Pima and Upland cotton to trifloxysulfuron(Envoke) herbicide under field conditions

在线全文

学校读者我要写书评

暂无评论

Journal of Cotton Research 2021年第4期4卷 299-307页

作者： zhang jinfa ABDELRAHEEM Abdelraheem WEDEGAERTNER Tom Department of Plant and Environmental Sciences New Mexico State University Cotton Incorporated

Trifloxysulfuron(Envoke) is an acetolactate synthase-inhibitor herbicide and can be used to control many broadleaf weeds and nutsedges in cotton ***,there is a lack of information on genotypic variation in response to the *** this field study,60 Pima(Gossypium barbadense L.) lines,122 Upland(*** L.) lines,and 9 Upland x Pima segregating populations were divided into five tests(18 A,18 B,18 G,18 RB,and 18 HQ) to evaluate trifloxysulfuron tolerance at the 7-true leaf stage(42 days after planting) under the same field conditions in 201 *** the five tests,Pima cotton genotypes tested in this study did not show any visual crop injury based on percentage of plants with chlorosis at 6 days after treatment(DAT),indicating consistent and high levels of trifloxysulfuron ***,the response to trifloxysulfuron within U pland cotton is highly *** U pland cotton is overall more sensitive to trifloxysulfuron with crop injury up to 80% than Pima cotton,1 9 lines had injury below 5% including one line with no visual injury,and 19 lines had injury between 5% and 10%.In test 18 HQ with 15 transgenic Upland cultivars and 17 non-transgenic Upland lines,the analysis of variance detected a significant genotypic *** broad-sense heritability estimates for trifloxysulfuron tolerance based on crop injury at 6 DAT was 0.555,suggesting that trifloxysulfuron tolerance in U pland cotton is moderately *** study represents the first report that Pima cotton and many Upland cotton lines are highly tolerant to trifloxysulfuron with no or little crop injury.

关键词： Upland cotton Pima cotton Glandless Trifloxysulfuron (Envoke) Herbicide tolerance

Low carbon alcohol fuel electrolysis of hydrogen generation catalyzed by a novel and effective Pt–CoTe/C bifunctional catalyst system

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Green Energy & Environment 2024年第4期9卷 758-770页

作者： Yang Zhou Lice Yu jinfa Chang Ligang Feng Jiujun zhang School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou225002JiangsuChina NanoScience Technology Center University of Central FloridaOrlandoFL32826USA College of Sciences&Institute for Sustainable Energy Shanghai UniversityShanghai200444China

Low carbon alcohol fuels electrolysis under ambient conditions is promising for green hydrogen generation instead of the traditional alcohol fuels steam reforming technique,and highly efficient bifunctional catalysts for membrane electrode fabrication are required to drive the electrolysis ***,the efficient catalytic promotion effect of a novel catalyst promoter,CoTe,on Pt is demonstrated for low carbon alcohol fuels of methanol and ethanol electrolysis for hydrogen *** and density functional theory calculation results indicate that the optimized electronic structure of Pt–CoTe/C resulting from the synergetic effect between Pt and CoTe further regulates the adsorption energies of CO and H*that enhances the catalytic ability for methanol and ethanol ***,the good water activation ability of CoTe and the strong electronic effect of Pt and CoTe increased the tolerance ability to the poisoning species as demonstrated by the CO-stripping *** high catalytic kinetics and stability,as well as the promotion effect,were also carefully ***,71.9%and 75.5%of the initial peak current density was maintained after 1000 CV cycles in acid electrolyte for methanol and ethanol oxidation;and a low overpotential of 30 and 35 mV was required to drive the hydrogen evolution reaction in methanol and ethanol solution at the current density of 10 mA cm^(-2).In the two-electrode system for alcohol fuels electrolysis,using the optimal Pt–CoTe/C catalyst as bi-functional catalysts,the cell potential of 0.66 V(0.67 V)was required to achieve 10 mA cm^(-2) for methanol(ethanol)electrolysis,much smaller than that of water electrolysis(1.76 V).The current study offers a novel platform for hydrogen generation via low carbon alcohol fuel electrolysis,and the result is helpful to the catalysis mechanism understanding of Pt assisted by the novel promoter.

关键词： Methanol electrolysis Ethanol electrolysis Cobalt telluride Pt-based electrocatalyst Hydrogen evolution reaction

High-density Linkage Map of Cultivated Allotetraploid Cotton Based on SSR, TRAP, SRAP and AFLP Markers

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Plant Biology 2007年第5期49卷 716-724页

作者： Jiwen Yu Shuxun Yu Cairui Lu Wu Wang Shuli Fan Meizhen Song Zhongxu Lin Xianlong zhang jinfa zhang National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural University Wuhan 430070 China Key Laboratory for Cotton Genetic Improvement Ministry of Agriculture Anyang 455004 China China Cotton Research Institute Chinese Academy of Agricultural Science Anyang 455004 China Department of Plant and Environmental Sciences New Mexico State University Las Cruces NM 88003 USA

A high-density linkage map was constructed for an F2 population derived from an Interspecific cross of cultivated allotetraploid species between Gossypium hirsutum L. and G. barbadense L. A total of 186 F2 individuals from the Interspecific cross of ＂CRI 36 × Hal 7124＂ were genotyped at I 252 polymorphic loci Including a novel marker system, target region amplification polymorphism （TRAP）. The map consists of 1 097 markers, including 697 simple se- quence repeats （SSRs）, 171 TRAPs, 129 sequence-related amplified polymorphisms, 98 amplified fragment length polymorphisms, and two morphological markers, and spanned 4 536.7 cM with an average genetic distance of 4.1 cM per marker. Using 45 duplicated SSR loci among chromosomes, 11 of the 13 pairs of homologous chromosomes were Identified In tetraploid cotton. This map will provide an essential resource for high resolution mapping of quantitative trait loci and molecular breeding in cotton.

关键词： cotton linkage map target region amplification polymorphism

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

蚕豆根瘤豆血红蛋白与产量的关系研究

青海大学学报 2024年第3期42卷 32-38页

作者：张金发李萍张红岩刘玉皎侯万伟滕长才青海大学农牧学院青海西宁810016 青海大学农林科学院青海西宁810016 青海大学省部共建三江源生态与高原农牧业国家重点实验室青海西宁810016

为探究不同蚕豆品种在不同生育期的结瘤特性和根瘤豆血红蛋白含量与产量的关系,以14个不同蚕豆品种(系)为试验材料,分别于盛花期、结荚期、鼓粒期和成熟期测定蚕豆的根瘤结瘤特性及根瘤豆血红蛋白含量,于成熟期测定蚕豆产量,并分析根瘤... 详细信息

为探究不同蚕豆品种在不同生育期的结瘤特性和根瘤豆血红蛋白含量与产量的关系,以14个不同蚕豆品种(系)为试验材料,分别于盛花期、结荚期、鼓粒期和成熟期测定蚕豆的根瘤结瘤特性及根瘤豆血红蛋白含量,于成熟期测定蚕豆产量,并分析根瘤数量、鲜重、干重、豆血红蛋白含量的变化规律及其与产量的相关性。结果表明:在盛花期至成熟期,不同蚕豆品种(系)的根瘤数量、豆血红蛋白含量总体呈递减趋势,根瘤鲜重、干重总体呈先增高后下降趋势;在14个蚕豆品种(系)中,青蚕15号的产量最高(7642.96 kg/hm 2),是其他品种(系)的1.1~2.4倍,与其他13个品种(系)之间存在极显著差异;鼓粒期与成熟期的根瘤数量、鲜重和干重分别是调控根瘤豆血红蛋白含量的关键因子,成熟期的根瘤干重、鲜重、数量及豆血红蛋白含量均与产量极显著正相关,是调控蚕豆产量的重要因子。该研究结果可为选育高固氮蚕豆品种(系)提供科学依据。

关键词：结瘤特性豆血红蛋白蚕豆产量

A comparative analysis of small RNAs between two Upland cotton backcross inbred lines with different fiber length: Expression and distribution

在线全文

学校读者我要写书评

暂无评论

The Crop Journal 2019年第2期7卷 198-208页

作者： Guoyuan Liu Man Wu Wenfeng Pei Xihua Li Nuohan Wang Jianjiang Ma Xinshan Zang Shuxun Yu jinfa zhang Jiwen Yu State Key Laboratory of Cotton Biology Cotton Institute of the Chinese Academy of Agricultural Sciences Key Laboratory of Cotton Genetic Improvement Ministry of Agriculture Department of Plant and Environmental Sciences New Mexico State University

The cotton fiber is the most important raw material for the textile industry and an ideal model system for studying cell elongation. However, the genetic variation of fiber elongation in relation to miRNA is poorly understood. A high-throughput comparative RNA-seq of two lines differing in fiber length(FL) from a backcross inbred line(BIL)population of G. hirsutum × G. barbadense revealed differentially expressed(DE) miRNAs and their targets in rapidly elongating fibers. A real-time quantitative PCR analysis was further performed to validate the results. A total of 463(including 47 DE) miRNAs were identified,and seven DE miRNAs were co-localized with seven FL quantitative trait loci(QTL)identified in the G. hirsutum × G. barbadense population. Of 82(including 21 DE) targets identified, nine(including one DE) were also co-localized with the seven FL QTL. The relationship between the allopolyploid and its diploid ancestral species with respect to miRNAs and their targets was also characterized. These results will facilitate the understanding of the molecular genetic mechanism of fiber elongation with regards to miRNAs in cotton.

关键词： Allopolyploid Gossypium Fiber elongation miRNA QTL hotspots

A targeted QTL analysis for fiber length using a genetic population between two introgressed backcrossed inbred lines in upland cotton(Gossypium hirsutum)

在线全文

学校读者我要写书评

暂无评论

The Crop Journal 2019年第3期7卷 273-282页

作者： Guoyuan Liua Wenfeng Pei Dan Li Jianjiang Ma Yupeng Cui Nuohan Wang Jikun Song Man Wu Libei Li Xinshan Zang Shuxun Yu jinfa zhang Jiwen Yu State Key Laboratory of Cotton Biology Cotton Institute of the Chinese Academy of Agricultural SciencesKey Laboratory of Cotton Genetic ImprovementMinistry of AgricultureAnyang 455000HenanChina Xinjiang Research Base State Key Laboratory of Cotton BiologyXinjiang Agricultural UniversityUrumqi 830001XinjiangChina Department of Plant and Environmental Sciences New Mexico State UniversityLas CrucesNM 88003USA

Cotton fiber is the most important natural raw material for the textile industry, and fiber length(FL) is one of the most important traits in *** trait locus(QTL)mapping based on high-density genetic maps is an efficient approach to identify genetic regions for *** our study, two backcrossed inbred lines(BILs) were chosen as parents to construct a high-density genetic map in F2 which was used to fine map FL QTL in F2:3 *** genetic map had a total size of 3462.8 cM, containing 9182 singlenucleotide polymorphisms(SNPs) based on *** FL related stable QTL were identified on two chromosomes(qFL-A08–1 on A08 and qFL-D03–1 on D03),and qFL-A08–1 was confirmed by a *** previously obtained RNA-seq data for the two BILs and qRT-PCR analysis, two candidate genes annotated as cytochrome b5(CB5, Gh_A08 G1729) and microtubule end-binding 1 C(EB1C, Gh_D03 G0232) that may regulate FL during the fiber elongation stage were *** addition, nine recombination hotspots in this population were *** results of this study will provide an important foundation for further studies on the molecular and genetic regulation of fiber elongation.

关键词： Gossypium Single-nucleotide polymorphism Fiber length Quantitative trait locus

在线全文

学校读者我要写书评

暂无评论

磁集成开关变换器的小信号建模方法

电工技术学报 2015年第24期30卷 103-109页

作者：卢增艺陈为章进法台达电子企业管理(上海)有限公司上海201209 福州大学电气工程与自动化学院福州350108

全面认识和客观评价磁集成技术对开关变换器稳态和动态性能的影响,需要建立磁集成开关变换器的小信号模型。论文以集成磁件分析方法为基础,结合状态空间平均法,分别提出三种磁集成开关变换器小信号建模方法,为这类变换器的动态特性研究... 详细信息

全面认识和客观评价磁集成技术对开关变换器稳态和动态性能的影响,需要建立磁集成开关变换器的小信号模型。论文以集成磁件分析方法为基础,结合状态空间平均法,分别提出三种磁集成开关变换器小信号建模方法,为这类变换器的动态特性研究和控制设计建立理论基础。以磁集成有源钳位正激变换器为研究对象,分别对这三种建模方法做详细阐述。

关键词：磁集成小信号建模状态空间正激变换器

利用马克隆值差异显著的BILs鉴定棉纤维品质相关基因

在线全文

学校读者我要写书评

暂无评论

棉花学报 2020年第1期32卷 52-62页

作者：吴嫚李龙云裴文锋 zhang jinfa 于霁雯中国农业科学院棉花研究所/棉花生物学国家重点实验室郑州大学研究基地河南安阳455000 Department of Plant and Environmental Science New Mexico State UniversityLas CrucesNM88003USA

【目的】马克隆值是衡量棉纤维品质的重要指标之一。利用马克隆值存在显著差异的2个陆海回交近交系材料进行高通量基因芯片分析,旨在筛选和鉴定棉纤维发育相关的关键基因。【方法】从SG747(Gossypium hirsutum L.)和Giza75(Gossypium Ba... 详细信息

【目的】马克隆值是衡量棉纤维品质的重要指标之一。利用马克隆值存在显著差异的2个陆海回交近交系材料进行高通量基因芯片分析,旨在筛选和鉴定棉纤维发育相关的关键基因。【方法】从SG747(Gossypium hirsutum L.)和Giza75(Gossypium Barbadense L.)高世代回交近交系(Backcross Inbred Lines,BILs)群体中选取NMGA-140(马克隆值6.2)和NMGA-051(马克隆值4.0)为材料,利用Affymetrix公司的棉花寡聚核苷酸基因芯片对其开花后10 DPA(Days after anthesis)的棉纤维进行了表达谱分析。【结果】获得了2655个差异表达基因,包括功能预测基因(15.57%),翻译、核糖体结构与生物合成相关基因(13.54%)和翻译后修饰、蛋白质转换、分子伴侣相关基因(9.31%)等。推测β-tub10正向调控棉纤维发育过程,β-tub1负向调控棉纤维发育过程,Ghi.3578.1.S1_s_at在棉纤维发育早期起到了作用。【结论】为棉花纤维品质的遗传改良提供了丰富的基因资源,为分子标记辅助育种开发更多新的分子标记。

关键词：棉纤维品质马克隆值基因芯片差异表达基因

Genome-wide association study of micronaire using a natural population of representative upland cotton(Gossypium hirsutum L.)

在线全文

学校读者我要写书评

暂无评论

Journal of Cotton Research 2021年第2期4卷 114-125页

作者： SONG Jikun PEI Wenfeng MA Jianjiang YANG Shuxian JIA Bing BIAN Yingying XIN Yue WU Luyao ZANG Xinshan QU Yanying zhang jinfa WU Man YU Jiwen State Key Laboratory of Cotton Biology Ministry of Agriculture and Rural Affairs/Institute of Cotton ResearchChinese Academy of Agricultural SciencesAnyang455000HenanChina Engineering Research Centre of Cotton Ministry of Education/College of AgricultureXinjiang Agricultural UniversityUrumqi830052XinjiangChina Department of Plant and Environmental Sciences New Mexico State UniversityLas Cruces880033NMUSA

Background: Micronaire is a comprehensive index reflecting the fineness and maturity of cotton *** is one of the important internal quality indicators of the cotton fiber and is closely related to the value of the cotton *** the genetic basis of micronaire is required for the genetic improvement of the ***,the genetic architecture of micronaire at the genomic level is *** present genome-wide association study(GWAS)aimed to identify the genetic mechanism of the micronaire trait in 83 representa:tive upland cotton lines grown in multiple *** GWAS of micronaire used 83 upland cotton accessions assayed by a Cotton 63 K Illumina Infinium single nucleotide polymorphism(SNP)array.A total of 11 quantitative trait loci(QTLs)for micronaire were detected on 10 *** 11 QTLs included 27 identified genes with specific expression patterns.A novel QTL,qFM-A12–1,included 12 significant SNPs,and GhFLA9 was identified as a candidate gene based on haplotype block analysis and on strong and direct linkage disequilibrium between the significantly related SNPs and ***9 was expressed at a high level during secondary wall thickening at 20∼25 days *** expression level of GhFLA9 was significantly higher in the low micronaire line(Msco-12)than that in the high micronaire line(Chuangyou-9).Conclusions: This study provides a genetic reference for genetic improvement of cotton fiber micronaire and a foundation for verification of the functions of GhFLA9.

关键词： Upland cotton(Gossypium hirsutum L.) Fiber micronaire GWAS Candidate genes GhFLA9