检索结果-南通市图书馆

MIKC^(C)-type MADS-box genes in Rosa chinensis: the remarkable expansion of ABCDE model genes and their roles in floral organogenesis

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Horticulture Research 2018年第1期5卷 617-631页

作者： Jinyi Liu Xiaodong Fu Yuwei Dong Jun Lu Min Ren Ningning Zhou changquan wang College of Horticulture Nanjing Agricultural UniversityNanjingJiangsu210095China Flower Research Institute Yunnan Academy of Agricultural SciencesKunmingYunnan650200China

MIKC^(C)-type MADS-box(MIKC^(C))genes encode transcription factors that have crucial roles in controlling floral organogenesis and flowering time in *** this gene family has been well characterized in many plant species,its evolutionary and comprehensive functional analysis in rose is *** this study,58 non-redundant MIKC^(C)uni-transcripts were extensively identified from rose *** analysis placed these genes into 12 clades with their Arabidopsis and strawberry counterparts,and revealed that ABCDE model(including AP1/FUL,AP3/PI,AG,and SEP clades),and SOC1 and AGL6 clade genes have remarkably expanded in Rosa chinensis,whereas genes from the FLC and AGL17 clades were *** alignments suggest that the AP3/PI clade may contribute to more specific functions in rose due to a high variation of amino acid residues within its MADS-box domains.A comparative analysis of gene expression in specific floral organ differentiation stages and floral organs between *** *** Blush and the closely related mutant genotype *** ***(floral organs mutated into leaf-like structures)further revealed the roles of ABCDE model genes during floral organogenesis in *** of co-expression networks provided an overview of the regulatory mechanisms of rose MIKC^(C)genes and shed light on both the prominent roles of AP3/PI clade genes in floral organogenesis and the roles of RcAGL19,RcAGL24,and RcSOC1 in regulating floral transition in *** analyses provide an overall insight of MIKC^(C)genes in rose and their potential roles in floral organogenesis.

关键词： organogenesis organs floral

KSN heterozygosity is associated with continuous flowering of Rosa rugosa Purple branch

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Horticulture Research 2021年第1期8卷 305-315页

作者： Mengjuan Bai Jinyi Liu Chunguo Fan Yeqing Chen Hui Chen Jun Lu Jingjing Sun Guogui Ning changquan wang College of Horticulture Nanjing Agricultural UniversityNanjing 210095China College of Horticulture and Forestry Sciences Huazhong Agricultural UniversityWuhan 430070China

Rose(Rosa spp.)plants flower via two contrasting methods:once flowering(OF)and continuous flowering(CF).Purple branch is a rare continuously flowering variety of Rosa rugosa that is extensively cultivated in ***,the genetic basis of its CF behavior is *** demonstrated that Purple branch is heterozygous for the TFL1 homolog *** KSN allele with a 9kb Copia insertion was found to be identical to that from continuously flowering Rosa chinensis Old *** other allele was found to be a functional wild-type *** overall expression of KSN was closely linked to the floral transition,and it was significantly repressed in continuously flowering Purple branch compared with OF *** promoter region of the normal KSN allele was hypermethylated,and histone methylation at H3H4,H3K9,and H3K27 of the KSN gene locus was modified in continuously flowering Purple *** of the DNA methyltransferase genes MET1 and CMT3 and the histone methyltransferase gene SUVR5 in Purple branch led to enhanced KSN expression,but silencing of the histone demethylase gene JMJ12 suppressed KSN ***,the CF habit of Purple branch may be due to reduced expression of KSN caused by the halved dose and may be associated with epigenetic modifications together with retrotransposon insertions along the *** study revealed a novel mechanism underlying the CF behavior of rose plants.

关键词： expression branch continuously

Effects of Long-Term Fertilization on Different Nitrogen Forms in Paddy along Soil Depth Gradient

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American Journal of Plant Sciences 2020年第12期11卷 2031-2042页

作者： Xinyue Li Bing Li changquan wang Yulan Chen Peng Ma College of Resources Sichuan Agriculture University Chengdu China Liangshan Branch of Sichuan Tobacco Company Liangshan China

The combined application of organic fertilizer and chemical fertilizer is an effective measure to increase nutrient content of soil plough layer, which must have a profound impact on the deep soil nutrients, especially the contents of nitrogen forms. The purpose of this study was to explore the characteristics of soil nitrogen forms in plough layer and along depth gradient in different fertilization treatments, so as to evaluate the soil quality in spatial dimension, further providing a theoretical basis for scientific fertilization and improvement of paddy soil fertility. Here, a 34-year field experiment was conducted with three treatments: without any fertilizer (CK), pure chemical fertilizer (NPK) and chemical fertilizer combined with organic fertilizer (NPKM). We analyzed the content of nitrogen forms in 0 - 100 cm soil depth and their ratios to total nitrogen (TN), and discussed the correlation between nitrogen forms contents and pH, CEC. Results showed that, compared with CK, both NPK and NPKM significantly increased the contents of nitrogen forms in topsoil (soil layer of 0 - 20 cm), especially nitrate nitrogen (NO3--N) content increased by 70% (NPK) and 111% (NPKM), respectively. Although the contents of different nitrogen forms decreased gradually along soil depth gradient, NPKS slowed down the decline rate of TN and alkali-hydrolysable nitrogen (AN) in 0 - 60 cm soil layer, compared to CK. Compared to NPK, NPKM significantly increased the NO3--N/TN ratio in 0 - 20 cm soil layer, but also decreased the content of -N in 20 - 40 cm, which was beneficial to reduce the risk of nitrogen leaching caused by nitrate leaching into deep layer. The increase of soil pH in NPKM treatment obviously alleviated the problem of soil acidi

关键词： Long-Term Fertilization Soil Depth Gradient Total Nitrogen Nitrogen Form

Effect of Se-S Cooperated Application on the Mineral Content and Nutrition Quality of Garlic （Allium Sativum L.）

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Journal of Life Sciences 2011年第1期5卷 29-34页

作者： Huanxiu Li changquan wang Bing Li Zesheng Yan Yangxia Zheng Horticulture College Sichuan Agricultural University Ya ＇an 625014 Sichuan China Resource and Environment College Sichuan Agricultural University Ya ＇an 625014 Siehuan China

Eleven nutrition elements and 5 quality elements of garlic （Allium sativum L.） in different Se, S level and their interaction pot experiments were analyzed by atom absorbing spectrophotometer, titration and fixing sulfur method. The mineral elements were analyzed by the Principal Component Analysis and the Factor Analysis on the SPSS 10.0 and three main factors were picked. The results showed that Se, S and Se-S cooperated application enhanced the garlic nutrition quality by increasing mineral nutrition. The garlic Vc was the highest after using higher Se compared middle S level （S 20 mg/kg soil ＋ Se 40 mg/kg soil）. Lower Se level compared middle S level （S 40 mg/kg soil ＋ Se 20 mg/kg soil） get the highest garlic abio-Se in all treatments. The garlic organic Se content was the highest after using higher Se compared middle S （S 40 mg/kg soil ＋ Se 40 mg/kg soil）. The treatment lower S compared lower Se level get the highest garlic allicin in all treatment. It showed that the fresh eating factor was affected by the element Se. The flavor factor and health care factor were affected by both Se and S.

关键词： Garlic (Allium stativum L.) Se-S cooperated application mineral content nutritional quality.

填充气体对高频无极灯253.7nm共振谱线的影响

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高电压技术 2014年第7期40卷 2179-2183页

作者：王长全张贵新北京劳动保障职业学院机电工程系北京100029 清华大学电机工程与应用电子技术系北京100084

为研究影响无极灯光效的主要因素,采用自制不锈钢腔体以及光谱仪等设备研究了填充气体类型、分压以及混合气体组分含量对Hg原子253.7 nm谱线强度的影响。实验结果表明:在Hg蒸气中掺入单一惰性气体的无极放电中,Hg原子253.7 nm谱线强度... 详细信息

为研究影响无极灯光效的主要因素,采用自制不锈钢腔体以及光谱仪等设备研究了填充气体类型、分压以及混合气体组分含量对Hg原子253.7 nm谱线强度的影响。实验结果表明:在Hg蒸气中掺入单一惰性气体的无极放电中,Hg原子253.7 nm谱线强度由强到弱的顺序为Ne>Ar>Kr,且随着填充气体分压的增大,Hg原子253.7nm谱线强度减弱;在Hg蒸气中混入总气体分压为50Pa的Ar-Kr混合气体时,随着Kr体积分数增大,Hg原子253.7 nm谱线强度先迅速增强而后逐渐减弱,在Kr气体体积分数为8%时达到最大值;而混入Ar-Ne混合气体时,Hg原子253.7 nm紫外谱线强度随Ne体积分数的增大先增强而后减弱,且在Ne气体积分数为80%时达到最大值。

关键词：照明无极灯光谱等离子体谱线强度气体放电

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我国女子足球运动员膝关节损伤的调查与分析

北京师范大学学报（自然科学版） 2007年第1期43卷 108-110页

作者：郎健王长权北京师范大学体育与运动学院北京100875

采用文献资料法和调查访问法,对参加2006年全国女足超级联赛的8支足球队的147名运动员进行膝关节损伤的调查与分析.结果显示:我国成年女子足球运动员膝关节损伤率为29.1%;在膝关节损伤中,半月板损伤率为23.1%.损伤的原因主要是膝关节力... 详细信息

采用文献资料法和调查访问法,对参加2006年全国女足超级联赛的8支足球队的147名运动员进行膝关节损伤的调查与分析.结果显示:我国成年女子足球运动员膝关节损伤率为29.1%;在膝关节损伤中,半月板损伤率为23.1%.损伤的原因主要是膝关节力量不足、身体疲劳及局部劳损等.根据膝关节损伤机制与病因,提出预防措施及合理意见,为教练员科学训练提供参考.

关键词：女子足球运动员膝关节损伤预防措施

云计算环境下的数字图书馆信息资源整合与服务模式创新

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图书馆工作与研究 2011年第1期 48-51页

作者：王长全艾雰山东大学威海分校商学院山东大学威海分校图书馆

云计算技术从云基础设施服务、SaaS服务、云存储服务等方面,提升了数字图书馆资源建设与服务能力。本文通过分析云计算环境下数字图书馆进行信息资源整合的实现机制,即数据仓库整合机制、中介器封装器整合机制和代理整合机制,提出云计... 详细信息

云计算技术从云基础设施服务、SaaS服务、云存储服务等方面,提升了数字图书馆资源建设与服务能力。本文通过分析云计算环境下数字图书馆进行信息资源整合的实现机制,即数据仓库整合机制、中介器封装器整合机制和代理整合机制,提出云计算环境下的数字图书馆创新服务模式。

关键词：云计算资源整合服务模式

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云计算时代的数字图书馆信息安全思考

图书馆建设 2010年第1期 50-52页

作者：王长全艾雰山东大学威海分校商学院山东威海264209 山东大学威海分校图书馆山东威海264209

云计算时代数字图书馆的信息安全问题,一方面来自云服务提供商提供的安全保障,另一方面来自图书馆的信息安全需求。针对数字图书馆可能面临的安全存储、访问控制、权限管理、数据保密及知识产权等信息安全问题,云计算时代的数字图书馆... 详细信息

云计算时代数字图书馆的信息安全问题,一方面来自云服务提供商提供的安全保障,另一方面来自图书馆的信息安全需求。针对数字图书馆可能面临的安全存储、访问控制、权限管理、数据保密及知识产权等信息安全问题,云计算时代的数字图书馆应采用最新的技术手段、统一身份认证、严格控制访问权限、加快信息安全基础设施建设、制定相关标准及政策法规,以保障图书馆的合法权利和数据安全。

关键词：云计算图书馆信息安全

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一品红苞片花色素的分离及初步鉴定

植物学通报 2006年第4期23卷 356-362页

作者：王长泉魏小兵山东理工大学生命科学学院淄博255049 山东理工大学分析测试中心淄博255049

用紫外-可见光分光光度计、高效液相色谱(HPLC)和质谱(MS)技术对一品红(Euphorbia pulcherrima)红色苞片中的花色素提取液进行了初步鉴定。一品红花色素的甲醇溶液分别在270、340和520 nm处有3个吸收峰；在440 nm吸光度与可见光最大吸... 详细信息

用紫外-可见光分光光度计、高效液相色谱(HPLC)和质谱(MS)技术对一品红(Euphorbia pulcherrima)红色苞片中的花色素提取液进行了初步鉴定。一品红花色素的甲醇溶液分别在270、340和520 nm处有3个吸收峰；在440 nm吸光度与可见光最大吸收波长520 nm吸光度的比值为0.29；花色素的甲醇溶液中加入AlCl_3后发生红移,再加入HCl后发生蓝移；色素溶液在紫外光下无荧光；色素样品经液相色谱分离后在270 nm检测有5个比较明显的吸收峰；质谱中得到595、611、381、571和589等对应的分子离子峰；花色素酸解液高效液相色谱图谱和鼠李糖、葡萄糖的出峰时间一致。由这些结果可推断一品红花色素样品中主要含有5种组分：矢车菊花色素芸香苷、飞燕草花色素芸香苷、飞燕草花色素苯甲酰基葡糖苷、矢车菊花色素苯甲酰基葡糖苷和一种未知成分。

关键词：一品红花色素紫外-可见光分光光度计液相色谱质谱