Proteomic analysis of blast-resistant near-isogenic lines derived from japonica rice,var. Yunyin,infected with Magnaporthe oryzae

Rice blast is one of the most devastating dis- eases in the world and outbreaks occur frequently. The differences in protein expression between blast resistant and susceptible near-isogenic lines （NILs） of japonica rice var. Yunyin infected with Magnaporthe oryzae were ana- lyzed using proteomics, indicated that 67 different proteins were identified from 75 obtained proteins using the matrix- assisted laser desorption/ionization time-of-flight mass spectrometry technique. Seven specific expression proteins, 43 up-regulated proteins and 17 down-regulated proteins were identified among the 67 proteins. The bioinformatical analysis demonstrated that these 67 different proteins were involved in many biological physiological processes including five proteins related to photosynthesis, 25 pro- teins related to metabolism, six proteins related to anti- oxidants, 10 proteins related to protein synthesis and modification, five proteins related to signal transduction,four proteins related to adversity stress and 12 non-func- tional proteins. These identified proteins were directly or indirectly related to stress. Five proteins related to different physiological processes were selected. Their cDNA sequences were predicted and their expression patterns were analyzed using real-time PCR, demonstrated that the genes would response to M. oryzae and the response blindingly different between blast resistant and blast sus- ceptible NILs.     

优质高产稳产粳稻新品种凤稻21号选育及栽培技术

针对云南高海拔稻区水稻生产在接近其分布的极限地区进行,产量障碍因素众多,大面积生产对品种的早熟、耐寒、抗病、优质、高产、稳产、适应性等都有较高要求,新品种选育和推广难度大且又无法向外引种。属我国乃至世界最特殊稻区之一的实际．我所根据云南高海拔水稻生产发展的需要和育种目标要求,育成的高海拔粳稻新品种凤稻21号兼具了早熟、耐寒、抗病、优质、高产、稳产、适应性好等优点,综合性状明显优于鹤16、凤稻9、14、15等原主栽品种,扩大推广应用前景好。     

完善草原家庭承包制与北方天然草地可持续管理

北方放牧草地与农田存在本质的区别,农田是私有可再生自然资源,而北方放牧草地是具有显著正外部性的公共可再生自然资源,因此在草原地区简单套用农区家庭承包制存在严重弊病,承包以后没有解决反而恶化了草原的“公地的悲剧”问题,这是导致我国草原近几十年严重退化的主要原因之一。建议:对于北方放牧草地,应主要由政府和管理部门承担维护产权排他性的责任;草原地区的家庭承包制应有所创新,可以家庭为单位承包,但不应鼓励以家庭为单位来利用,应在完成草原土地产权初始配置的基础上允许牧户自主治理,鼓励牧户合作生产;在完善草原家庭承包制的基础上,可能通过多样化的地方自主治理,实现放牧草地多功能优化管理,实现在利用前提下的北方干旱半干旱地区放牧草地的长久治理。     

灌木在北方矿区绿化中的应用

本文通过分析北方矿区的地理和气候特点,选择了适宜北方矿区栽植的灌木品种,阐述了灌木在矿区各个功能性区域的不同应用,并对灌木的养护提出了意见。     

征稿启事

征稿启事《大连民族学院学报》是由国家民族事务委员会主管、大连民族学院主办的综合性学术期刊。本刊为双月、文理合刊。自然科学有"草地生态""生命科学与环境资源""机电与自动化""土木建筑与设计""物理与数学""计算机信息与通信""教学与管理"等栏目;哲学社会科学有"北方民族""民族学""和谐社会""文学""语言与文化""经济学""管理学""旅游管理""民族地区可持续发展""政治     

我国北方地区成年男子体型分析

为了研究我国目前北方地区成年男子的体型现状，在对我国北方地区的成年男子进行抽样调查的基础上，对所得的数据经预处理后进行多种方式的统计与分析，从多个方面对我国北方地区的成年男子体型特征及按身长和年龄分类后的体型差异做了定性定量的描述，并依据所得结论对我国服装生产销售及国家号型标准设置提出了建议。     

俄委举行联合军演

11月25日,由“彼得大帝”号核动力导弹巡洋舰、“恰巴年科海军上将”号大型反潜舰等四艘军舰组成的俄罗斯北方舰队舰艇编队抵达委内瑞拉拉瓜伊拉港,于12月1日起与委内瑞拉海军11艘舰艇进行为期三天的联合军事演习,这是冷战结束以来俄罗斯海军舰队首次访问拉美。军事演习内容包括防空演习、燃料补给、舰船跟踪、与直升机和战斗机协同作战,     

籼稻扬稻6号和粳稻苏沪香粳花药培养力的比较

为建立适合江苏水稻主栽品种花药培养的技术体系,本研究以籼稻扬稻6号和粳稻苏沪香粳为研究材料,分别从取样温度,低温预处理天数以及培养基中的蔗糖、琼脂和激素等研究不同水稻亚种花培的植株再生技术体系.结果表明:在气温26℃～31℃之间,扬稻6号在4℃低温预处理9d,接种到以M8为基本培养基,附加2,4-D1mg/L,NAA3mg/L,KT1mg/L,脯氨酸100mg/L,水解酪蛋白300mg/L,60g/L蔗糖和琼脂8g/L的花药愈伤诱导培养基中,可以获得高达8.5%的出愈率.而苏沪香粳在气温27℃～30℃之间,4℃低温预处理12d,接种到以M8为基本培养基,附加2,4-D1mg/L,NAA3mg/L,KT1mg/L,脯氨酸100mg/L,水解酪蛋白300mg/L,60g/L蔗糖和琼脂6g/L的花药愈伤诱导培养基中,可以获得高达15.05%的出愈率.扬稻6号和苏沪香粳花培愈伤组织转接分化培养基分别获得2.7%和5.7%的绿苗率.     

Scenario simulation and forecast of land use/cover in northern China

Modeling land use/cover scenario changes and its potential impacts on structure and functions of ecosystem in typical regions are helpful to understanding the interactive mechanism between land use/cover system and ecosystem. Based on the analysis of the existing land use/cover simulation and forecast models, a land use/cover scenario dynamics model by the integration of System Dynamics （SD） model, Back Propagation Neural Network （BPNN） and Cellular Automata （CA） model is developed with land use/cover scenario changes in northern China in the next 30 years and simulated in this paper. The model is to simulate the land use/cover scenario demands by using a SD model at first, and then allocating the land use scenario patterns at the local scale with the considerations of land use/cover suitability, inheritance ability and neighborhood effect by using BPNN-CA model to satisfy the balance between land use/cover scenario demands and supplies. It integrates the advantages of SD, BPNN and CA. Macro-driving factors and the micro-spatial pattern are also fully taken into account. The BPNN simplifies the identification of the factors＇ weights used in CA model and improves the reliability of the simulation results. The simulation accuracy of the model developed in this paper was found to be about 74%. It suggests that the model has the ability to reflect the complexity of land use/cover system at different scales to some extent and it is a useful tool for assessing the potential impacts of land use system on ecosystem. The simulated results also indicate that the urban land, water area and forest will increase significantly, and farmland and unable land will decrease gradually. Obvious land use/cover changes will take place in the farming-pastoral zone and the southeast area of northern China.