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Relationship Between Leaf C/N Ratio and Insecticidal Protein Expression in Bt Cotton as Affected by High Temperature and N Rate

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Journal of Integrative Agriculture 2014年第1期13卷 82-88页

作者： ZHANG xiang LU Chun-hua CHEN Yuan wang gui-xia CHEN Yuan CHEN De-hua Jiangsu Provincial Key Laboratory of Crops Genetics and Physiology Yangzhou University Yangzhou 225009 P.R.China Department of Soil and Crop Sciences Texas A&M University College Station 77843 USA

Expression of insecticidal protein for transgenic Bacillus thuringiensis （Bt） cotton is unstable and related to nitrogen metabolism. The objective of this study was to investigate the relationship between leaf carbon nitrogen ratio （C/N） and insecticidal efficacy of two Bt cotton cultivars. C/N ratio and Bt protein content were both measured at peak square period and peak boll period respectively under 5-7 d high temperature and different nitrogen fertilizer rates on the Yangzhou University Farm and the Ludong Cotton Farm, China. All plants were grown in field. The results showed that the C/N ratio enhanced slightly and the Bt protein content remained stable at peak square period, but significant increases for the C/N ratio and decreases markedly for the leaf Bt protein concentration were detected at the peak boll period. The similar patterns at the two growth periods were found for the leaf C/N ratio and Bt protein content by different N fertilizer treatments. When nitrogen rate was from 0 to 600 kg ha-l, the C/N ratio was reduced by 0.017 and 0.006 for Sikang 1 and Sikang 3 at peak square period, compared to the 1.350 to 1.143 reduction for Sikang 1 and Sikang 3 at peak boll period, respectively. Correspondingly, the leaf Bt protein contents were bolstered by 2.6-11.8 and 26.9-36.9% at the two different growth periods, respectively. The results suggested that enhanced C/N ratio by high temperature and nitrogen application may result in the reduction of inseetiocidal efficacy in Bt cotton, especially in peak boll period.

关键词： Bt cotton C/N ratio Bt protein insecticidal efficacy

Analysis of Volatile Components in Strawberry Cultivars Xingdu 1 and Xingdu 2 and Their Parents

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Agricultural Sciences in China 2009年第4期8卷 441-446页

作者： ZHANG Yun-tao wang gui-xia DONG Jing ZHONG Chuan-fei KONG Jin LI Tian-zhong HANZhen-hai Institute of Horticultural Plants China Agricultural University Beijing 100193 P.R. China Institute of Forestry and Pomology Beijing Academy of Agricultural and Forestry Sciences Beijing 100093 P.R.China

To study differences and genetic trends of volatiles in Xingdu 1 and Xingdu 2, the strawberry cultivars, with their parents, the volatile components were analyzed by head space-solid phase microextraction and gas chromatography-mass spectrometry. The results indicated that a total of 50 compounds were identified in Xingdu 1 cultivar, including hexanoic acid methyl ester and hexanoic acid ethyl ester, butanoic acid methyl ester, and butanoic acid ethyl ester, octanoic acid methyl ester and octanoic acid ethyl ester, isomyl hexanoate. And there were 71 compounds in Xingdu 2, which were similar to that of Xingdu 1. About 55 volatiles were identified in Allstar （female parent）, including acetone, acetic acid 1- methylethyl ester, 1-octanol, hexanoic acid ethyl ester and butanoic acid methyl ester. And 43 volatiles were identified in Toyonoka （male parent）, including hexanoic acid ethyl ester, nerolidol, 1-octanol, hexanoic acid methyl ester, acetic acid octyl ester, isomyl hexanoate and octanoic acid methyl ester. Consequently, hexanoic acid methyl ester and hexanoic acid ethyl ester, butanoic acid methyl ester, and butanoic acid ethyl ester and isomyl hexanoate in twins might be affected both sides of their parents. In the family, male parent （Toyonoka） had the highest concentrations of fragrance alcohols, such as nerolidol, linalool and 1-octanol, but which couldn＇t be transmitted to the descendants. Acetone, acetic acid 1- methylethyl ester of the twins originally came from matrilinear inheritance, as the contents of the two compounds were very high in Allstar but little in Toyonoka. Genetic trends of butanoic acid methyl ester, butanoic acid ethyl ester, hexanoic acid ethyl ester, hexanoic acid methyl ester and isomyl hexanoate were affected by both sides of parents.

关键词： strawberry (Fragaria ananassa Duch.) cultivars parents aroma components

The Equivalence of the Complete Einstein-K■hler Metric and the Bergman Metric on Y_Ⅲ

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Chinese Quarterly Journal of Mathematics 2007年第4期22卷 602-606页

作者： wang gui-xia Department of Mathematics and Physics Hefei University Hefei 230601 China

In this paper we give the proof about the equivalence of the complete Einstein- Kahler metric and the Bergman metric on Cartan-Hartogs domain of the third type. And we obtain the method of getting the equivalence of t... 详细信息

关键词： Cartan-Hartogs domain Einstein-Kahler metric Berginan metric

基于MATLAB/Simulink的随动控制系统建模与仿真

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船舶工程 2012年第3期34卷 54-57,88页

作者：王桂霞中国船舶重工集团公司第704研究所上海200031

文章先通过介绍随动控制系统的组成,然后对各组成部分进行数学建模,如:伺服电机、PWM脉宽功率放大器、增量式编码器等,得到整个随动控制系统的数学模型,再设计模型各环节的PID参数,最后通过MATLAB/Simulink进行仿真,得到整个系统的仿真... 详细信息

文章先通过介绍随动控制系统的组成,然后对各组成部分进行数学建模,如:伺服电机、PWM脉宽功率放大器、增量式编码器等,得到整个随动控制系统的数学模型,再设计模型各环节的PID参数,最后通过MATLAB/Simulink进行仿真,得到整个系统的仿真结构图、不同频率输入信号的响应曲线和误差,并进行了带宽分析。通过仿真,验证了控制方案的正确性和可行性,满足设计输入要求。

关键词：随动控制系统数学建模 MATLAB/Simulink 仿真

生态资源价值化助推乡村振兴的逻辑机理与突破路径

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自然资源学报 2024年第1期39卷 29-48页

作者：郎宇王桂霞吉林农业大学经济管理学院长春130118

遵循“山水林田湖草沙”系统整全开发理念盘活乡村生态资源价值,是新时代助推乡村全面振兴的关键。在揭示生态资源价值化所经历的“生态资源价值培育—生态资源资本深化—生态资源价值实现”三阶段发展内涵的基础上,阐述生态资源价值化... 详细信息

遵循“山水林田湖草沙”系统整全开发理念盘活乡村生态资源价值,是新时代助推乡村全面振兴的关键。在揭示生态资源价值化所经历的“生态资源价值培育—生态资源资本深化—生态资源价值实现”三阶段发展内涵的基础上,阐述生态资源价值化与乡村振兴的内涵逻辑关联,并深入剖析生态资源价值化助推乡村振兴的三阶段逻辑机理,探讨助推乡村振兴的区域典型模式以及在助推过程中需要克服的区域现实难点和共性现实难点。基于逻辑发展、区域难点、共性难点三个视角提出生态资源价值化助推乡村振兴的突破路径,为盘活生态资源价值,助推乡村全面振兴提供科学依据和理论指导。

关键词：生态资源价值化山水林田湖草沙综合系统开发乡村振兴

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糖尿病合并甲状腺功能亢进症研究进展

中国实用内科杂志 2015年第6期35卷 549-551页

作者：吴燕王桂侠吉林大学第一医院内分泌科长春130021

有研究显示,2010年全球成年糖尿病患者约2.85亿（6.4%）,2030年将达到4.39亿（7.7%）[1]。在我国,2007年6月至2008年5月进行的全国流行病学调查显示,国内糖尿病总的发病率为9.7%,糖尿病前期为15.5%[2]。

关键词：糖尿病甲状腺功能亢进症

商丘和开封地区新婚夫妇免费婚检的“知信行”比较

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中国妇幼保健 2014年第33期29卷 5361-5363页

作者：王桂霞新乡医学院河南新乡453003

目的:分析商丘和开封地区新婚夫妇婚检率出现巨大差异的原因,为改善商丘和开封地区甚至全省的婚检工作提供可行的政策建议。方法:借鉴健康教育的"知信行"理论,自行设计调查问卷,对河南省商丘和开封地区的新婚夫妇进行抽样调查,分析和比... 详细信息

目的:分析商丘和开封地区新婚夫妇婚检率出现巨大差异的原因,为改善商丘和开封地区甚至全省的婚检工作提供可行的政策建议。方法:借鉴健康教育的"知信行"理论,自行设计调查问卷,对河南省商丘和开封地区的新婚夫妇进行抽样调查,分析和比较两地新婚夫妇免费婚检的"知信行"情况。结果:商丘和开封地区新婚夫妇认为有必要进行婚检的分别为89.1%和97.4%,婚检率分别为21.7%和74.4%,两组差异有统计学意义(P<0.01)。结论:免费婚检政策对河南省婚检率的恢复作用明显,但是,该政策对婚检率的影响因地区而出现差异。

关键词：新婚夫妇免费婚检 “知信行”模式