Rank correlation among parametric and nonparametric measures of phenotypic stability

Summary There is an increasing number of stability parameters for genotypes grown in different environments. It is therefore useful to study the statistical relations between these parameters. One approach is the calculation of rank correlations between different stability parameters in empirical data sets. In the data analysed there are high rank correlations between ecovalence W_i, deviation mean square s² _di, the nonparametric measures S_i ⁽¹⁾, S_i ⁽²⁾, and two new measures R_i and L_i as well as between environmental variance S² _xi and regression coefficient b_i. The results suggest that S_i ⁽¹⁾, S_i ⁽²⁾, L_i, and R_i can be used as alternatives to W_i and the stability variance ² _i. This may be worthwhile, if certain statistical assumptions do not hold, particularly if significance testing is needed.     

Detection of repeated genotypes among 93 diploid wheat accessions

Summary An objective procedure was developed to find and eliminate repeated genotypes from a set of crop cultivars or accessions which may be used as parents for future plant breeding programs. Nonhierarchical, nonexclusive, exhaustive cluster analysis was used to group 93 diploid wheat accessions using LSD multiple comparisons of accession means based on data measured on seven characters. Beginning with the rarest accessions, i.e. those represented in the fewest clusters resulting from the clusters analysis, a minimum number of the accessions were chosen to represent the phenotypes of all 93 of the accessions. Two analyses were performed, one using data from an irrigated trial, the other from a dryland trial. The dryland trial data was more discriminating in that it required 71 accessions to represent all of the clusters generated from the original 93 accessions while the irrigated trial data required only 60 of the 93 accessions. In addition to the 71 accessions chosen from the dryland trial analysis, the irrigated trial analysis suggested an additional 12 accessions were phenotypically and, therefore, genotypically unique. The total of 83 unique accessions left 10 phenotypically duplicate accessions to be eliminated from the set of potential parents. Four of the 10 duplicated accessions were rare in that they were represented in very few clusters in either the irrigated trial analysis or in the dryland trial analysis. Because their phenotypes were not unique in spite of being rare, we believe such accessions were duplicated genotypically as well as phenotypically. The other six duplicates were common in that they were represented in a large number of clusters. Such accessions may not prove to be duplicates if grown in additional environments (trials), or if measured on additional characters.     

乳蛋白生物活性肽的来源及其生理重要性

乳蛋白经酶解产生的肽类除了具有营养作用外,还具有多种生物活性,包括阿片肽、阿片拮抗肽活性及免疫调节、抗高血压、抗血栓、抗菌、促进矿质元素吸收等活性.综述了这些活性肽在体内、体外及通过微生物作用的产生情况,并对其生理重要性进行了简要论述.     

马克思"人的全面而自由发展"思想的现实意义

马克思"人的全面而自由发展"思想是新时期新阶段我国社会文明建设的指针,是我们正确认识社会主义初级阶段本质特征的理论依据.他肯定了物质生产力对实现人的全面而自由发展的重要意义,为推动我国社会主义现代化建设和实现人的全面发展指出了方向.     

代数学中有关概念的演进及其教学意义

代数学中有许多概念之间既相互联系、又相互转化,这种演进关系不仅仅有理论研究方面的需要,也有实际应用方面的刺激。在教学中,如果能够把这两个方面与代数知识的传授、代数方法的训练以及代数思维能力的培养有机地结合起来,那么,就不仅能够激发学生学习代数理论的兴趣与动力,而且更为重要的是,这种有机结合还能够提升学生欣赏数学的品味。     

工矿企业降耗节能的有效措施

主要阐述了工矿企业节约电能的重要意义及所能够采取的节约电能的有效措施。     

现阶段宁夏社会主义新农村建设的发展策略

中国共产党提出了新时期建设社会主义新农村的重大历史任务,标志着我国经济建设步入了一个新的发展阶段.针对目前宁夏新农村建设中存在的主要问题,提出在新农村建设过程中应坚持做好充分发挥政府和农民的积极性,坚持用现代理念教育农民,以工业理念谋划农业,以城市理念建设农村,大力开展“村企互动”,共建新农村活动等项工作.     

韶山地区的旅游开发与景观保护

韶山既有重要的人文景观．又有神奇的自然景观，是著名的革命纪念地，也是旅游胜地，对历年韶山旅游业收入和接待参观人数的动态变化进行了研究．结果表明。革命纪念地的旅游开发受政治、资源等因素制约，同时对韶山风景区的现状及问题进行了探讨，如违规建设严重，以及景区植物景观特色保护与管理还存在有问题．对此提出了合理进行旅游开发，充分利用现有资源，提高规划意识，统一建设管理机构，保持原有景观风貌等5条可供参考的建议。     

在典型叙事中弘扬时代与民族精神——何建明报告文学创作的当代意义

何建明是当今影响最大的报告文学代表作家之一。他报告文学创作的价值与意义,在于对主旋律与多样化的准确把握与成功探索。这一点,主要体现在时代主题、民族精神、典型叙事与史诗建构等方面。具体来说,又表现出选题的重大与题材的开拓、时代主题与民族精神的和谐统一、歌颂与批判的有机融合、传统精义与典型叙事的史诗建构,等等。但其创作在取得辉煌成就的同时也提出了某些值得思考的问题。"何建明现象"再次说明：报告文学等纪实文学的学术关怀与理论建构势在必行。     

论《孝经》对“中韩”道德发展及其社会现代化转型的意义

《孝经》及其蕴涵的孝道孝德是中国传统文化的文明精髓之一,也是中国传统道德的核心内容。它不仅形塑了中国古代的道德文化,化育了中国人的人格品质和行为范式,而且深深地影响了中国的近邻尤其是东亚的朝鲜民族的精神风貌和道德取向,成为中国和韩国在社会现代化转型过程中中和西方个体本位价值观念的冲击,克服现代文明病,构建社会和谐的重要精神资源。