检索结果-南通市图书馆

Mapping quantitative trait loci associated with starch paste viscosity attributes by using double haploid populations of rice (Oryza sativa L.)

引用

Journal of Integrative Agriculture 2020年第7期19卷 1691-1703页

作者： Tahmina SHAR SHENG Zhong-hua Umed ALI Sajid FIAZ WEI Xiang-jin XIE Li-hong JIAO Gui-ai Fahad ALI shao Gao-neng HU Shi-kai HU Pei-song tang shao-qing State Key Laboratory of Rice Biology/Key Laboratory of Rice Biology and Breeding Ministry of Agriculture/China National Rice Research InstituteHangzhou 310006P.R.China

The paste viscosity attributes of starch,measured by rapid visco analyzer(RVA),are important factors for the evaluation of the cooking and eating qualities of rice in breeding *** determine the genetic roots of the paste viscosity attributes of rice grains,quantitative trait loci(QTLs)associated with the paste viscosity attributes were mapped,using a double haploid(DH)population derived from Zhongjiazao 17(YK17),a super rice variety,crossed with D50,a tropic japonica ***-four QTLs,for seven parameters of the RVA profiles,were identified in three planting *** 54 QTLs were located on all of the 12 chromosomes,with a single QTL explaining 5.99 to 47.11%of phenotypic *** the QTLs identified,four were repeatedly detected under three environmental conditions and the other four QTLs were repeated under two *** of the QTLs detected for peak viscosity(PKV),trough viscosity(TV),cool paste viscosity(CPV),breakdown viscosity(BDV),setback viscosity(SBV),and peak time(PeT)were located in the interval of RM 6775-RM 3805 under all three environmental conditions,with the exception of pasting temperature(PaT).For digenic interactions,eight QTLs with six traits were identified for additivexenvironment interactions in all three planting *** epistatic interactions were estimated only for PKV,SBV and *** present study will facilitate further understanding of the genetic architecture of eating and cooking quality(ECQ)in the rice quality improvement program.

关键词： RVA profiles eating and cooking quality(ECQ) quantitative trait loci(QTL) DH population rice

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

Phenotype of Rice Floury Endosperm Mutant flo7 and Fine Mapping of Mutated Gene

引用

Rice science 2015年第4期22卷 162-170页

作者： SHENG Zhong-hua FANG Peng-fei LI San-feng JIAO Gui-ai XIE Li-hong HU Pei-song tang shao-qing WEI Xiang-jin State Key Laboratory of Rice Biology/Key Laboratory of Rice Biology and Genetic Breeding of Ministry of Agriculture China National Rice Research Institute

The major storage substance in rice endosperm is starch, which accounts for 80% of dry matter weight. In this study, rice mutant flo7, selected from the progeny of Nipponbare＇s tissue culture, displayed floury and opaque endosperm. Compared with its corresponding wild type （WT） Nipponbare, the mutant rio7 produced longer, narrower, thinner and lighter grains. The levels of glucose, fructose and sucrose in the mutant flo7 endosperm were higher than those in the WT endosperm, whereas the protein content was not affected. With respect to both amylose content and gel consistency, the mutant flo7 was lower than WT, but its alkali value was higher. Scanning electron microscopic examinations showed that the endosperm of the mutant flo7 contained irregular, loosely packed and compound starch granules. Genetic analysis indicated that the mutant phenotype was determined by a single recessive nuclear gene The flo7 locus was mapped to a region on the long arm of chromosome 12, within a 95.1 kb interval defined by the markers C2-11 and C5-15. There are 13 open reading frames in the mapping interval. Transcription profiling of the developing grains showed that a number of genes involved in starch synthesis were affected differently in the mutant flo7.

关键词： flo7 floury endosperm starch fine mapping rice mutant

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

Identification of QTLs associated with cadmium concentration in rice grains

引用

Journal of Integrative Agriculture 2018年第7期17卷 1563-1573页

作者： HU Da-wei SHENG Zhong-hua LI Qian-long CHEN Wei WEI Xiang-jin XIE Li-hong JIAO Gui-ai shao Gao-neng WANG Jian-long tang shao-qing HU Pei-song State Key Laboratory of Rice Biology Ministry of Science and Technology/Key Laboratory of Rice Biology and Breeding Ministry of Agriculture/China National Rice Research Institute College of Agronomy Hunan Agricultural University

Cadmium（Cd） contamination in rice has been a hot topic of research because of its potential risk to human health. In this study, a double haploid（DH） population derived from Zhongjiazao 17（YK17）（an early-season indica cultivar）×D50（a tropical japonica cultivar） was used to identify quantitative trait loci（QTLs） associated with Cd concentration in brown rice（CCBR） and Cd concentration in milled rice（CCMR）. Continuous and wide variation for CCBR and CCMR were observed among the DH population. Correlation analysis revealed a positive and highly significant correlation between the two traits. A total of 18 QTLs for CCBR and 14 QTLs for CCMR were identified in five different pot and field trials. Two pairs of QTLs for CCBR（qCCBR2-1 and qCCBR2-2, qCCBR9-1 and qCCBR9-2） and one pair of QTLs for CCMR（qCCMR5-1 and qCCMR5-2） were detected in multiple trials. The alleles increasing CCBR at the qC CBR2-1/qC CBR2-2 and qC CBR9-1/qC CBR9-2 QTLs were contributed by YK17 and D50, respectively, whereas the D50 allele at the qCCMR5-1/qCCMR5-2 QTLs increased CCMR. Eight pairs of QTLs for CCBR and CCMR, qCCBR2-2 and qCCMR2-2, qCCBR3 and qCCMR3, qCCBR4-2 and qCCMR4-1, qCCBR4-3 and qCCMR4-2, qCCBR4-4 and qCCMR4-3, qCCBR5 and qCCMR5-2, qCCBR7 and qCCMR7, and qCCBR11-1 and qCCMR11-2, co-localized on chromosomes 2, 3, 4, 5, 7, and 11, respectively. For all of these QTL pairs, except qCCBR5/qCCMR5-2, the additive effects came from YK17. In addition, four CCMR QTLs showing significant additive×environment interaction and two pairs of CCMR QTLs with bi-allelic epistatic interactions were identified. The results of this study could facilitate marker-assisted selection of breeding rice varieties with low Cd accumulation in grain.

关键词： Cd concentration in grain QTL mapping brown rice milled rice

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

Genetic Analysis and Molecular Mapping of Novel White Striped Leaf Mutant Gene in Rice

引用

Rice science 2013年第5期20卷 336-342页

作者： SHENG Zhong-hua WEI Xiang-jin shao Gao-neng SONG Jian LUO Ju HU Pei-song tang shao-qing CHEN Li-yun Rice Research Institute Hunan Agricultural University China National Rice Research Institute

A new white striped leaf mutant wsll was discovered from Nipponbare mutated by ethyl methanesulfonate. The mutant showed white striped leaves at the seedling stage and the leaves gradually turned green after the tillering stage. The chlorophyll content of wsll was significantly lower than that of wild-type during the fourth leaf stage, tillering stage and booting stage. The numbers of chloroplast, grana and grana lamella were reduced and the thylakoids were degenerated in wsll compared with wild type. Genetic analysis showed that the wsll was controlled by a single recessive gene. Molecular mapping of the wsll was performed using an F2 population derived from wsll/Nanjing 11. The wsll was finally mapped on the telomere region of chromosome 9 and positioned between simple sequence repeat markers RM23742 and RM23759 which are separated by approximately 486.5 kb. The results may facilitate map-based cloning of wsll and understanding of the molecular mechanism of the regulation of leaf-color by WSL1 in rice.

关键词： rice white striped leaf mutant genetic analysis gene mapping

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

Analysis on Factors Affecting Seedling Establishment in Rice

引用

Rice science 2007年第1期14卷 27-32页

作者： LUO Jux tang shao-qing HU Pei-song Aleman LOUIS JIAO Gui-ai tang Jian China National Rice Research Institute Hangzhou 310006 China Cuba National Rice Research Institute Havana Cuba

Elongations of coleoptile and mesocotyl are related directly to rice seedling establishment in soil and height of plant is related to lodging in rice production. Twelve typical rice cultivars with different lengths of coleoptile and mesocotyl （long, medium and short） were selected by screening the lengths of coleoptile and mesocotyl in 1500 accessions. The seedling establishments of these typical cultivars were compared under the combinations of different sowing depths and flooding durations, and two semi-dwarf varieties （G140, Zhong 96-21） with good seedling establishments and optimum mesocotyl lengths were found. The length of mesocotyl was completely fitted negative binomial distribution and the length of coleoptile was nearly fitted Iognormal distribution. Analysis of the relationships among mesocotyl, coleoptile, seeding depth, flooding duration, and their interactions to seedling establishment percentage showed that there existed significant relations among mesocotyl, coleoptile, mesocotyl x coleoptile, seeding depth, flooding duration and mesocotyl x sowing depth in the experiment for seedling establishment.

关键词： direct seeding seedling establishment coleoptile mesocotyl rice

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

跨国零售企业中国市场营运模式比较及启示

引用

商业经济与管理 2005年第6期 42-47页

作者：王瑞丰唐少清北京联合大学北京100025

纵观跨国零售企业中国市场的营销运作,显现出创新的竞争作为和卓越的竞争成效,因而有必要关注跨国零售企业中国市场营销个性的差异,尤其需要研究其营销共性的特征,将其营销运作模式进行对比分析,提炼核心能力的基本框架,把握核心能力关... 详细信息

纵观跨国零售企业中国市场的营销运作,显现出创新的竞争作为和卓越的竞争成效,因而有必要关注跨国零售企业中国市场营销个性的差异,尤其需要研究其营销共性的特征,将其营销运作模式进行对比分析,提炼核心能力的基本框架,把握核心能力关键所在,探索零售企业核心能力与行业竞争态势、目标市场竞争环境、以及总体竞争趋势的关联度,寻求我国零售企业跨入国际市场参与竞争的借鉴之路。

关键词：跨国零售企业中国市场营销运作

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

甘肃水资源的特点及保护利用

引用

中国沙漠 2000年第2期20卷 213-216页

作者：唐海萍唐少卿北京师范大学资源科学研究所环境演变与自然灾害教育部重点实验室北京100875 兰州大学西北开发研究所甘肃兰州730000

阐述了甘肃水资源的 4个特点 :降水偏少、地区间悬殊大 ;地表径流不足 ,且东多西部少 ,中东部地高水低 ,西部径流利用方便 ;固体水库——高山冰川是甘肃水资源的一道风景线 ;地下水资源分布面积广 ,水质好 ,对干旱区和干旱季节补充地表... 详细信息

阐述了甘肃水资源的 4个特点 :降水偏少、地区间悬殊大 ;地表径流不足 ,且东多西部少 ,中东部地高水低 ,西部径流利用方便 ;固体水库——高山冰川是甘肃水资源的一道风景线 ;地下水资源分布面积广 ,水质好 ,对干旱区和干旱季节补充地表水之不足很重要。从体现水资源使用价值的水质、水量和水能 3种表现 ,以及开发利用水资源的 2种基本形式 ,消耗性用水和非消耗性用水分析了甘肃水资源开发利用状况及存在的问题。最后 ,从

关键词：水资源开发利用可持续发展甘肃水资源保护

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

基于开放经济新体系的自贸试验区创新发展研究

引用

中国软科学 2019年第S1期 19-27页

作者：唐少清陈俊荣谢茜北京联合大学管理学院北京100101 中国传媒大学北京100025

自贸试验区作为改革开放发展和"一带一路"的战略支点,不仅是优惠政策的洼地,而且是制度创新的高地,肩负中国开放经济新体系的改革开放试点.因此,自贸试验区在熟悉和适应规则上必须进行制度创新,既要营造国际化、市场化、法治化的营商环... 详细信息

自贸试验区作为改革开放发展和"一带一路"的战略支点,不仅是优惠政策的洼地,而且是制度创新的高地,肩负中国开放经济新体系的改革开放试点.因此,自贸试验区在熟悉和适应规则上必须进行制度创新,既要营造国际化、市场化、法治化的营商环境,与国际新的贸易规则接轨,推动中国经济新旧动能的转换,又要以开放倒逼改革,在政府服务模式、行政管理体制、金融运行机制等深水区改革中"先行先试",进而推动全国改革由点及面中深入推进,以自贸试验区为代表的第三次对外开放浪潮将推动中国越过改革的攻坚期和深水区,构建中国发达的开放型市场经济.本文从自由贸易区的历史发展入手,分析其特点、战略定位和总体目标,以及服务京津冀、对接"一带一路"的作用,然后通过与国内外自由贸易区的比较,提出了自贸试验区的创新发展策略.

关键词：开放经济新体系自贸试验区创新发展

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

首都人口疏解的制约因素与突破思路——基于国外城市人口疏解的经验

引用

河北大学学报（哲学社会科学版） 2017年第4期42卷 150-155页

作者：姜鹏飞唐少清北京联合大学商务学院北京100025

根据首都圈人口特点,借鉴国外城市经验,提出人口疏解的突破思路。即:人地统筹,构建大区域人口协调机制;产城融合,发挥产业链"以业带人"的作用;职住平衡,提升卫星城人口"磁力";人口迁出示范,加快北京城市副中心、雄安新区建设,带动高端... 详细信息

根据首都圈人口特点,借鉴国外城市经验,提出人口疏解的突破思路。即:人地统筹,构建大区域人口协调机制;产城融合,发挥产业链"以业带人"的作用;职住平衡,提升卫星城人口"磁力";人口迁出示范,加快北京城市副中心、雄安新区建设,带动高端要素流动;生活成本阶梯化,运用经济杠杆,引导人口梯度转移。以此为首都人口问题提供决策参考,进而实现京津冀都市圈人口流动性与区域承载力的平衡,拓展人口经济密集区域人口流动问题的研究视野。

关键词：人口疏解首都人口疏解国外城市人口疏解经验京津冀协同发展

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

英语多模态教学模式下学生核心素养发展探究

引用

河北开放大学学报 2023年第2期28卷 29-32页

作者：唐绍清本溪开放大学文法学院辽宁本溪117000

英语核心素养教育是以核心素养的发展为导向,旨在激发学生的学习积极性,培养学生在特定情境下的语言理解和表达能力,提升学生的文化意识和思维品质。职场英语核心素养教育即是要运用英语多模态教学模式,培养学习者的语言能力、文化品格... 详细信息

英语核心素养教育是以核心素养的发展为导向,旨在激发学生的学习积极性,培养学生在特定情境下的语言理解和表达能力,提升学生的文化意识和思维品质。职场英语核心素养教育即是要运用英语多模态教学模式,培养学习者的语言能力、文化品格、思维品质和学习能力,促进英语学科核心素养的形成,并具备必备的品格和能力,实现人与社会的协调发展。英语多模态教学模式和素养教育理念将引领英语学科育人模式的全面改革。

关键词：核心素养素养教育职场英语多模态教学

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：