Genetic correlations between similar traits in the Danish and Swedish Warmblood sport horse populations

Genetic correlations between phenotypically similar or related traits tested at young horse performance tests for Danish Warmblood (DWB) and Swedish Warmblood (SWB) horses were calculated using Multi-trait Across Country Evaluation (MACE). Data comprised stallions with an estimated breeding value (EBV) from the national genetic evaluations (NGE) based on at least 10 progeny tested in performance tests, and the ancestors of those stallions in two generations. The DWB data included 349 stallions and the SWB data 426 stallions. Of these, 28 had EBVs in both DWB and SWB. Additionally 151 pedigree animals were common between DWB and SWB. The dependent variables used were NGE results of stallions born 1980 and later, which reduced the number of common stallions with EBVs to 23. The genetic correlations were very high for jumping traits (0.99) and dressage related traits (0.89–0.97). For conformation traits correlations varied between 0.10 and 0.98. Because of the high genetic correlations and frequent use of same or closely related foreign stallions, breeders of both DWB and SWB would benefit from using the NGEs for performance traits across countries, although the genetic correlations do not consider differences in genetic merit levels between the populations. It would be feasible to perform a joint genetic evaluation using MACE, which would improve the reliability of estimated breeding values, and enable ranking of all stallions according to the national scale of each country.     

Ecosystem services: Foundations,opportunities, and challenges for the forest products sector

The ecosystem service concept has been proposed as a meaningful framework for natural resource management. In theory it holds concomitant benefit and consequence for the forest product sector. However, numerous barriers impede practitioners from developing concrete and enduring responses to emerging ecosystem service markets, policies, and initiatives. Principle among these barriers is that the ecosystem service concept has a complex history, numerous definitions in use, and an astounding diversity in rationale and application. This article provides a conceptual review of ecosystem services and its economic foundations, distinguishes among several current definitions of the term and their relatedness to strategies in practical application, discusses diverse approaches to valuation, and explores potential for future relevance in forest product and other sectors.     

芹菜资源及其保健功能的研究进展

介绍了近几年来对芹菜资源分布、生物学特性、地方品种收拳整理和国外品种引进利用研究的情况。综述了芹菜的营养价值和功能成分分析、生物活性物质的提取技术及其保健功能的药理和临床应用研究进展。     

ISSR和SRAP标记技术在葫芦科植物种质资源研究中的应用

阐述了简单重复序列间扩增(ISSR)和相关序列扩增多态性(SRAP)分子标记技术的基本原理和特点,综述与探讨了分子标记技术在葫芦科植物种质资源的亲缘关系鉴定与遗传多样性分析、分子遗传图谱的构建与目的性状基因的标记定位、基因库的构建和基因克隆、辅助育种选择及品种纯度鉴定等研究领域的广泛利用与推广,以期更合理高效地保护和利用葫芦科植物种质资源.     

VEGETATION植被指数数据预处理方法

VEGETATION数据的植被指数,受云雾影响,含有大量的噪声信号,使用之前必须进行去噪声处理.结合实例数据介绍了半中值滤波法、半均值滤波法、等间隔极大值法用于植被指数的去噪声处理,效果良好;该处理方法同样适用于NOAA和MODIS等数据的植被指数预处理.     

水稻丰优抗品种资源的研究

1984～1987年收集的876个水稻品种中,筛选出了一批丰优抗品种,其中具有丰产性状的品种20个,抗稻瘟病和白叶枯病的品种14个,外观品质较好的品种11个。这些材料可供培育高产稳产优质水稻的新品种作亲本。     

湖北省水库鱼类资源及其利用途径的探讨

湖北省水库现存的鱼类有94种,隶属于6目15科55属。即鲱形目:鳀科;鳗鲡目:鳗鲡科;鲤形目:鲤科、平鳍鰍科、鳅科;鲶形目:鲿科、鲶科、鮡科;合鳃目:合鳃科;鲈形目:鮨科、塘鳢科、鰕虎鱼科、攀鲈科、鳢科、刺鰍科。其中以鲤科鱼类的种类最多。全省水库鱼类组成的一个重要特点是,经济鱼类占有较大比例,是发展水库渔业的良好物质基础。本文还详细分析了全省水库渔业资源利用的现状,并提出要充分利用水库渔业资源,应该在保护水库渔业资源的基础上,实行粗放养殖和小面积精养相结合,引进驯化新的良种,改进捕捞技术,进行水库综合开发和水库群的连片开发。     

我国内蒙古西部地区国有林场经营现状与发展问题探析

国有林场在内蒙古林业生态建设中具有骨架作用,是祖国生态安全屏障的重要组成部分与支撑点,也是贯彻落实生态文明建设,践行“绿水青山就是金山银山”理念不可或缺的重要实施主体。在深入了解与掌握内蒙古自治区西部地区6个市国有林场经营现状的基础上,总结归纳了内蒙古西部地区国有林场经营的特点,深入分析了内蒙古西部地区国有林场面临的问题与困境,并探讨解决这些问题的途径,为国有林场今后的发展提出了合理化建议。     

不同NSI值脱腥大豆粉凝胶形成性的评价

本文通过水溶大豆粉凝固性试验对几种不同ＮＳＩ值大豆粉凝胶形成性，以考察不同工艺生产的大豆食品中物理添加特性，证明了不同剂量高频处理工艺生产不同ＮＳＩ值大豆粉凝胶形成性情况。同时证明只有ＮＳＩ值＞５０％时，具有良好的凝胶性。