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427篇 您的检索式:作者名="Lafitte"
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1回交高代选择导入系的纹枯病抗性与抗旱性的遗传重叠研究显示文摘利用来自抗旱性较好的供体亲本(BG300和BG304)、具有两种遗传背景(IR64和特青)的水稻高代回交(BC2)抗旱选择导入系,通过人工接种的方法鉴定纹枯病抗性,考察纹枯病抗性与抗旱性之间可能存在的遗传重叠。通过与受体亲本的纹枯病抗性表现比较发现,具有特青背景的抗旱选择导入系倾向于纹枯病抗性的降低,而IR64背景的抗旱选择导入系则倾向于纹枯病抗性的增强。基于基因型与表型的方差分析共鉴测到6个与纹枯病抗性相关的位点,其中QSbr6在不同供体和背景的两个群体中分别检测到,而QSbr10则在同一供体的两个遗传背景下均检测到;有3个位点(QSbr6、QSbr8和QSbr10)与同一群体中检测到的抗旱性位点位置相近,很可能是两种抗性重叠的遗传基础。尽管方差分析的方法在选择导入系的非选择目标性状相关位点的鉴定中存在相当程度的偏低估计,本研究所检测到的纹枯病抗性位点,特别是那些与抗旱性重叠位点的分子标记以及相关的抗性株系仍将为进一步的水稻纹枯病抗性和抗旱性的多抗性育种和深入的遗传重叠研究提供有用的信息和材料。郑天清 徐建龙 傅彬英 高用明 Satish VERUKA Renee LAFITTE 翟虎渠 万建民 朱苓华 黎志康 2007作物学报2007,33,8:25
2遗传搭车与方差分析在水稻定向选择群体的抗旱性位点分析中的初步应用显示文摘水稻抗旱性属于复杂性状,近年的遗传研究日益关注胁迫下的产量相关位点。选用来自同一抗旱性较好的供体亲本(BG300),具有两种遗传背景(IR64和特青)和两种选择条件(低地和旱地)的4个水稻高代回交(BC2)抗旱性定向选择导入系群体。通过SSR分子标记,检测群体中供体等位基因的导入频率,分析了选择条件和遗传背景对供体等位基因导入频率的影响。在此基础上,利用基于遗传搭车原理的卡方检验对等位基因导入频率的偏离进行检测,同时结合表型-基因型方差分析(ANOVA)的方法,对上述群体进行了和抗旱性相关位点的QTL分析。共检测到显著位点24个,其中卡方检验发现20个,方差分析检测到8个。有4个被这两种方法都检测到,很可能是与胁迫下的产量直接相关的位点。同时也对非胁迫下的产量位点进行了检测,发现上述抗旱性位点与非胁迫下产量的关系不大。还就选择条件和遗传背景的效应等对目标性状QTL定位的影响进行了讨论。研究结果将为进一步的水稻抗旱性分子育种研究提供有用的信息和材料。郑天清 徐建龙 傅彬英 高用明 Satish VERUKA Renee LAFITTE 翟虎渠 万建民 朱苓华 黎志康 2007作物学报2007,33,5:19
3Improving Drought Tolerance of Rice by Designed QTL Pyramiding显示文摘Drought is the most important factor limiting rice yields in the rainfed areas of Asia. To overcome the problem, we developed a new strategy 'designed QTL pyramiding' to more effi ciently develop drought tolerant (DT)Z.K. Li D. Dwivedi Y.M. Gao T.Q. Zheng R. Lafitte J.L. Xu D. Mackill B.Y. Fu J.Domingo Y. Sun L.H. Zhu 2007分子植物育种2007,5,2:12
4利用二维应变定量检测整体和局部心肌功能:在肥厚型心肌病中的应用显示文摘OBJECTIVES: Recently, a novel method to measure strain from standard two-dimensional images has been developed. Our goal was to characterize global and regional systolic function abnormalities using this technique in patients with hypertrophic cardiomyopathy(HCM). BACKGROUND: Strain has been proposed as a sensitive tool to detect early systolic function abnormalities in HCM. However, the clinical application of conventional Doppler-derived strain has been limited by poor reproducibility and angle dependency. METHODS: Echocardiographic examinations were performed in 26 patients with nonobstructive HCM and 45 healthy subjects. Using a dedicated software package, bidimensional acquisitions were analyzed to measure longitudinal and transverse strain in apical views and circumferential and radial strain in parasternal short-axis view. RESULTS: Despite apparently normal left ventricular systolic function, all components of strain were significantly reduced in HCM. Average longitudinal, transverse, circumferential, and radial strain in patients with HCM and controls were -15.1± 6.2% versus -20.3± 5.6% , 23.3± 17.0% versus 27.2± 14.9% ,-16.8± 7.1% versus 19.6± 5.2% , and 25.2± 13.9% versus 36.8± 17.2% , respectively(all p< 0.001). In patients with asymmetrical HCM, longitudinal septal strain was significantly lower than for other left ventricular segments combined:-9.2± 4.7% versus-12.7± 7.1% (p=0.001). Average interobserver and intraobserver variabilities were 11% and 11.3% , respectively. CONCLUSIONS: Two-dimensional strain is a new simple, rapid, and reproducible method to measure different components of systolic strain. This technique identified early abnormalities in patients with HCM that have apparently normal left ventricular systolic function.Serri K. Reant P. Lafitte M. S. Lafitte 孙凯 2006世界核心医学期刊文摘(心脏病学分册)2006,2,8:3
5Genome-wide Introgression Lines and their Use in Genetic and Molecular Dissection of Complex Phenotypes in Rice (Oryza sativa L.)显示文摘Zhi-Kang Li Bin-Ying Fu Yong-Ming Gao Jian-Long Xu J. Ali H. R. Lafitte Yun-Zhu Jiang J. Domingo Rey C. H. M. Vijayakumar R. Maghirang Tian-Qing Zheng Ling-Hua Zhu 2005Plant Molecular Biology2005,,1:2
6CO_2激光在外科中的应用显示文摘F. LAFITTE 2005中国激光医学杂志2005,14,1:2
7EXISTENCE AND STABILITY OF VISCOUS SHOCK PROFILES FOR 2-D ISENTROPIC MHD WITH INFINITE ELECTRICAL RESISTIVITY显示文摘For the two-dimensional Navier-Stokes equations of isentropic magnetohydrodynamics(MHD)withγ-law gas equation of state,γ≥1,and infinite electrical resistivity,we carry out a global analysis categorizing all possible viscous shock profiles.Precisely,we show that the phase portrait of the traveling-wave ODE generically consists of either two rest points connected by a viscous Lax profile,or else four rest points,two saddles and two nodes.In the latter configuration,which rest points are connected by profiles depends on the ratio of viscosities,and can involve Lax,overcompressive,or undercompressive shock profiles.Considered as three-dimensional solutions,undercompressive shocks are Lax-type(Alfven)waves.For the monatomic and diatomic casesγ=5/3 andγ=7/5,with standard viscosity ratio for a nonmagnetic gas,we find numerically that the the nodes are connected by a family of overcompressive profiles bounded by Lax profiles connecting saddles to nodes,with no undercompressive shocks occurring.We carry out a systematic numerical Evans function analysis indicating that all of these two-dimensional shock profiles are linearly and nonlinearly stable,both with respect to two-and three-dimensional perturbations.For the same gas constants,but different viscosity ratios,we investigate also cases for which undercompressive shocks appear;these are seen numerically to be stable as well,both with respect to two-dimensional and(in the neutral sense of convergence to nearby Riemann solutions)three-dimensional perturbations.Blake Barker Olivier Lafitte Kevin Zumbrun 2010Acta Mathematica Scientia2010,30,2:2
8QTL × environment interactions in rice. I. Heading date and plant height显示文摘Z. K. Li S. B. Yu H. R. Lafitte N. Huang B. Courtois S. Hittalmani C. H. M. Vijayakumar G. F. Liu G. C. Wang H. E. Shashidhar J. Y. Zhuang K. L. Zheng V. P. Singh J. S. Sidhu S. Srivantaneeyakul G. S. Khush 2003Theoretical and Applied Genetics2003,,1:2
9Prevalence of metabolic syndrome after acute coronary syndrome and its prognostic significance 显示文摘Boulon C Lafitte M Richeboeuf V 2006AmJCardiol2006,98,11:1
10MRI and MRA for diagnosis and followup of cerebral venous thrombosis(CVT) 显示文摘Lafitte F Boukobza M Guichard JP et aI 1997Clin Radiol1997,52,9:1
11Neurological complications ofprimary Sjogren's syndrome显示文摘Lafitte C Amoura Z Cacoub P 2001J Neurol2001,248,7:1
12Merked up regulation of Tlymphocytes and expression of interleukin - 9 in bronchial biopsies from patients with chronic bronchitis with obstruction 显示文摘Panzner P Lafitte J J Tsicopoulos A 2003Chest2003,124,5:1
13Efficiency of high nitrogen selection environments for improving maize for maize for low nitrogen target environments显示文摘BANZIGER M BETRAN F J Lafitte H R 1996Crop Sci1996,37,:1
14Biventricular pacing and left ventricular pacing in heart failure:similar hemodynamic improvement despite marked electromechanical differences显示文摘Bordachar P Lafitte S Reuter S 0,,:1
15Identification of an OprD homologue in Acinetobacter baumannii显示文摘DUPONT M PAGES J M LAFITTE D 2005J Proteome Res2005,4,6:1
16Radiographic findings in 37 cases of primary CNS lymphoma in immune - competent patients显示文摘Coulon A Lafitte F Hoang Xuan K 2002Euro Radiol2002,12,2:1
17Whole plant responses, key processes, and adaptation to drought stress:The case of rice显示文摘Lafitte H R Guan Y S Shi Y 2007J Exp Bot2007,58,:1
18Effects of glycoprotein Ⅱb/Ⅲa inhibition on microvascular flow after coronary reperfusion:a quantitative myocardial contrast echocardiography study显示文摘Kunichika H Ben-Yehuda O Lafitte S 2004J Am Coll Cardiol2004,43,2:1
19Axonemal dynein intermediate-chain gene(DNAⅡ)mutations result in situs inversus and primary ciliary dyskinesia(Katagener Syndrome)显示文摘Guichard C Hurricane MC Lafitte JJ 2001Am J Hum Genet2001,68,9:1
20Effects of glycoprotein Ⅱb/Ⅲa inhibition on microvascular flow after coronary reperfusion:a quantitative myocardial contrast echocardiography study显示文摘Kunichika H Ben-Yehuda O Lafitte S 0,,02:1
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