QTL analysis for some quantitative traits in bread wheat     

Pushpendra KG  Harindra SB  Pawan LK  Neeraj K  Ajay K  Reyazul RM  Amita M  Jitendra K 《Journal of Zhejiang University. Science. B》2007,8(11):807-814

Quantitative trait loci (QTL) analysis was conducted in bread wheat for 14 important traits utilizing data from four different mapping populations involving different approaches of QTL analysis. Analysis for grain protein content (GPC) sug- gested that the major part of genetic variation for this trait is due to environmental interactions. In contrast, pre-harvest sprouting tolerance (PHST) was controlled mainly by main effect QTL (M-QTL) with very little genetic variation due to environmental interactions; a major QTL for PHST was detected on chromosome arm 3AL. For grain weight, one QTL each was detected on chromosome arms 1AS, 2BS and 7AS. QTL for 4 growth related traits taken together detected by different methods ranged from 37 to 40; nine QTL that were detected by single-locus as well as two-locus analyses were all M-QTL. Similarly, single-locus and two-locus QTL analyses for seven yield and yield contributing traits in two populations respectively allowed detection of 25 and 50 QTL by composite interval mapping (CIM), 16 and 25 QTL by multiple-trait composite interval mapping (MCIM) and 38 and 37 QTL by two-locus analyses. These studies should prove useful in QTL cloning and wheat improvement through marker aided selection.  相似文献   

空主语的隐含现象与认知机制——试析一种特殊连谓句的空主语隐含原因     

曾静涵 《丹东师专学报》2011,(2):72-75

本文的研究对象为现代汉语连谓句中的一种特殊形式,其特殊性在于句子中带有一个隐含的特殊空主语,其句式可以归纳为公式S1＋V1＋N（＋S2）＋V2。这种空主语隐含的现象的存在原因是多方面的,既有语言本身的因素,也与语言使用者——人的认知机制有关。本文从认知和语言使用等方面出发,对S1＋V1＋N（＋S2）＋V2句式中的空主语隐含这一现象进行探索,并挖掘这种现象存在的深层原因。  相似文献   

网络营销课程教学中专题实训的设计与应用     

杨艳 《实验室研究与探索》2011,(6):373-375,409

在探索网络营销课程实践教学的过程中,注重业务职能与课程内容的有效联系,创设了专题实训的实践方法,并具体设计了网上调查表、网络营销工具、网站策略、网络广告4个专题实训。每个专题实训内容按照体验、体会、分析、制作4个递进层次设计任务,由浅入深、由简到繁、由单个实验到团队综合实验地进行实训。开放学生自主选择任务层次的权利,实现自主学习、互助学习与引导学习相结合。采用过程性考核、学生参与评估和就业应用分析等方法,对专题实训的效果进行跟踪和分析,提高应用的准确性和合理性。通过应用过程的经验总结,为推广应用提供了有益的借鉴。  相似文献   

以能力培养为主线 建设实验教学示范中心   总被引：6，自引：2，他引：4  

温武  黄立胜  郭旭鸣  丘凯伦 《实验室研究与探索》2011,30(3):100-102,116

介绍计算机科学与工程实验教学示范中心以培养满足社会需求的复合型和创新型计算机类专业人才为目标,充分利用优越的实验条件,发挥现有师资力量,将实验教学与实践相结合,建立以能力培养为主线的"一体化、分阶段、多层次"的独立实验课程教学体系。构造"特色课程"模块,培养学生科学素养、创新意识和协作精神,开拓学生探索科学潜能的创新思路,取得了显著的成效。  相似文献   

排斥与全纳——全纳教育视野下的教育排斥研究   总被引：1，自引：0，他引：1  

吕寿伟 《外国教育研究》2011,(9):86-91

全纳教育的提出是因为教育排斥的存在,全纳教育与教育排斥之间存在着内在的、必然的关联。全纳教育视野下的教育排斥在对象上经历了针对残疾儿童的教育排斥、针对弱势群体的教育排斥和面向所有儿童所可能引发的教育排斥;在内容上也经历了机会排斥、质量排斥和参与排斥。对教育排斥认识上的深化使得全纳教育被赋予了更为丰富的内涵。然而,全纳教育并没有形成对教育排斥的系统化研究,这使全纳教育视野下的教育排斥不可能获得系统化、理论化的建构而依然停留于经验和直观的层面,从而使全纳教育无论在理念层面还是在实践层面都只获得了有限的成功。  相似文献   

评论以美元为中心的国际货币体系     

张之光 《武汉工程职业技术学院学报》2011,23(2):51-54

基于对现今世界以美元为中心运行的国际货币体系的考察,包括其形成的历史原因,运行的各种规则,以及对现实世界经济发展产生的种种促进作用和一些不利的影响,对以美元为中心的国际货币体系的未来进行了探讨。  相似文献   

Teaching science skills and knowledge to students with developmental disabilities: A systematic review     

Magdalena M. Apanasionok  Richard P. Hastings  Corinna F. Grindle  Richard C. Watkins  Andreas Paris 《科学教学研究杂志》2019,56(7):847-880

A comprehensive review of the literature was conducted to identify current practice on teaching science to students with intellectual disability (ID) and/or Autism Spectrum Disorder (ASD) in relation to two review questions—students' science outcomes and students' and teachers' experiences of the interventions. Six databases related to education, psychology, and science were systematically searched. A detailed protocol can be viewed on PROSPERO (registration number: CRD42017057323). Thirty studies were identified that reported on science interventions and 20 on student/teacher experiences of the interventions. The majority of the studies targeted science vocabulary and concepts. Other targets included inquiry skills and comprehension skills. The majority of the interventions used components of systematic instruction (n = 23). Five studies focused on self-directed learning and two on comprehension-based instruction. Students and teachers reported positive experiences of the interventions. The findings suggest that components of systematic instruction in particular might be effective in teaching science content to students with ID and/or ASD. Further research is needed to explore the effectiveness of identified interventions on teaching more complex science skills and with students with severe disabilities. Some limitations related to the search strategy are highlighted.  相似文献   

Consistently inconsistent: An examination of the variability in the identification of emotional disturbance     

Kristin Scardamalia  Keisha L. Bentley‐Edwards  Kairys Grasty 《Psychology in the schools》2019,56(4):569-581

The federal definition of emotional disturbance (ED) has been heavily criticized as vaguely defined and poorly operationalized yet there has not been a formal analysis of the reliability of the ED criteria. This study examined the reliability of the federal criteria for a special education designation of ED. A total of 179 school psychologists reviewed a mock special education report, made an eligibility determination, and provided information about their eligibility decision. In all, 56 participants found the student met ED eligibility criteria using 16 different combinations of the five criteria. Krippendorff’s α, a statistic preferred for content analysis, was calculated as a measure of criterion reliability. Results indicated extremely poor reliability (α = 0.2011). These findings demonstrate the importance of redefining the existing criteria.  相似文献   

Educating sick children: an Irish hospital school in context, 1900–1980     

Barry Kennerk 《History of education》2019,48(3):356-373

The teaching of sick children in hospital is an often overlooked aspect of Ireland’s national education system. Prior to the 1970s, there was hardly any formal structure in place for this type of schooling in the country, despite the fact that many children could be inpatients for weeks or months at a time. In 1980, a report, published by the Association for the Welfare of Children in Ireland, revealed that although there had been an improvement in the intervening decade, only 6% of hospitals had a dedicated schoolroom. Drawing on previously unresearched papers belonging to Temple Street Children’s Hospital, this article will take a closer look at the socio-political forces that held back the development of the hospital classroom in Ireland for so many decades; it will also explore some of the factors that promoted its development after 1970, thus helping to explain why the education of sick children is so firmly established today.  相似文献   

Investigating populations via penguins and their poo!     

Laura J. Bonnett  Simon R. White 《Teaching Statistics》2019,41(3):101-105

We describe an activity that introduces students to population modelling, enables them to use estimates obtained from a sample to infer back to the population, and understands how the findings are translatable via penguins and their poo!  相似文献