大小麦附加系的细胞学稳定性观察

对１Ａ，２Ａ，３Ａ，４Ａ，６Ａ及７Ａ等６个大小麦附加系的细胞学稳定性进行了观察。发现经两代繁殖后，其种子根尖细胞染色体有丢失现象。在减数分裂过程中，均观察到单价体、多价体、染色体断片、后期染色体落后、染色体桥及四分体微核等异常现象；经对四分体微核出现频率的统计，表明４Ａ，６Ａ及７Ａ等３个附加系在细胞学上相对较不稳定。     

林区公路线形设计浅谈

本文作者结合自己多年的工程实践,对林区公路线形设计进行了论述,并提出了一些理论与实践相结合的方法。     

F·Scott菲茨杰拉德与其经典短篇小说之美国梦研究

F· Scott 菲茨杰拉德对美国梦的探讨突出地表现在其长篇又系统地反映在其短篇.美国梦的实现,理论上标志着精神财富与物质财富并驾齐驱.由此产生的神秘色彩使人们对它向往已久,进而夸大其在社会发展过程中的动力作用.通过大量阅读和详尽分析,揭示出美国梦在菲小说中自起源至破灭的各个阶段,力图在肯定其积极作用的同时认识其具有西方文化特点的实质.     

Antiproliferative activity of Goldfussia psilostachys ethanolic extract on K562 leukemia cells

A dose-dependent and significant (P<0.01) antiproliferative effect of Goldfussia psilostachys ethanolic extract was observed on K562 cells. The IC(50) is ca. 0.5 microg/ml. The extract markedly increases the proportion of cell in G2/M phases and decreases the population of cells in G0/G1 phases. Moreover, the antimitotic effect is correlated with polymerization of microtubule assembly. These results indicate that G. psilostachys ethanolic extract inhibits the proliferation of K562 cells and disrupts the normal dynamic of microtubules during mitosis.     

Integrating traditional and local ecological knowledge into forest biodiversity conservation in the Pacific Northwest

The potential for traditional and local ecological knowledge to contribute to biodiversity conservation has been widely recognized, but the actual application of this knowledge to biodiversity conservation is not easy. This paper synthesizes literature about traditional and local ecological knowledge and forest management in the Pacific Northwest to evaluate what is needed to accomplish this goal. We address three topics: (1) views and values people have relating to biodiversity; (2) the resource use and management practices of local forest users, and their effects on biodiversity; (3) models for integrating traditional and local ecological knowledge into biodiversity conservation on public and private lands. We focus on the ecological knowledge of forest users belonging to three groups who inhabit the region: American Indians, family forest owners, and commercial nontimber forest product harvesters.     

辣椒黄绿苗不育系叶片光合色素变化及酶活性研究

研究了辣椒(Capsicum annuum L.)黄绿苗胞质雄性不育系(YBM-A6)、保持系(YBM-B6)及绿苗(96-140)的叶绿素变化及叶片酶活性。从幼苗期到成株期三者的叶绿素含量呈逐步增加的变化趋势,绿苗叶片叶绿素、类胡萝卜含量都远高于黄绿苗,但黄绿苗叶片叶绿素a/b、类胡萝卜素/叶绿素(a+b)(除结果期外)的比值都远大于绿苗。黄绿苗叶片中游离脯氨酸含量均高于绿苗,但其含量变化趋势相同;黄绿苗叶片中过氧化物酶、过氧化氢酶活性变化趋势与绿苗相同;YBM-A6叶片过氧化氢酶活性均低于其保持系YBM-B6,过氧化物酶活性则高于其保持系,超氧化物歧化酶活性在开花结果盛期明显高于保持系YBM-B6和96-140。说明叶绿素和类胡萝卜素含量和变化与辣椒黄绿苗的叶色变化有关,酶活性变化可能与黄绿苗胞质雄性不育系YBM-A6的不育有关。     

三系辣椒新品种沈研18号的选育

沈研18号是以辣椒细胞质雄性不育系A074—3为母本,恢复系0952—7为父本配制的一代杂交种。果实长灯笼形,果纵径15．0cm果横径9．7cm,果色绿,果面略皱,微辣,单果质量195．0g,可食率85％以上。Vc含量61．7mg／kg（鲜质量）,可容性总糖4．08％。适于辽宁、河北、山东、吉林、黑龙江、内蒙古、新疆、...     

浅谈钢筋砼构造柱通病的防治

本文论述了砖混结构现浇砼构造柱质量通病的产生原因,预防措施及施工方法。     

全自动纸浆模塑餐具生产线气动系统设计

介绍了全自动纸浆模塑生产线的生产工艺过程，采用信号一动作状态线图法对气动系统进行设计，并描述了纸浆模塑生产线气动系统的工作过程及系统组成。     

适应山区发展的美国布朗李的引种栽培

美国布郎李的两个品种－紫琥珀和黑宝石从１９９２年引入金华以来，表现出来的丰产稳产状，适应性强，品质佳等特点深当地群众喜爱，概述了这两个品种的生态生产物学特性及引种几个来的生长结果状况后，进而对它们的引种栽培技术作了介绍。