无性系的

Study on the rapid Propagation Technique of Lycoris. Herb and get follow results: In the period found of axenic clone 0.1%HgCl2 is the best disinfector to deal with the Lycoris" bulb ,as to neat part, such as root, leave, and bulbil, is fit to use 0.1%HgCl2 antisepsis 7min. And found the best effect is the bulb scale with base. Root, leaf and bulb scale without base all were not inducement adventitious buds. Different position of bulb had different culture effect. 3-15 of middle part of bulb can be induced most adventitious buds but inner and outer of least it. Incised the bulb with three types (pieces of eight, pieces of six, piece of four), and found the type of pieces of six is best to Lycoris mass production. L.sprengeri is fit MS+BA5mg/l+NAA0.1mg/l and L.squamigera is fit MS+BA5mg/l+NAA0.5mg/l, but the medium fit to culture L.longituba haven"t be found.In the period of Subculture-Found of mass production, the most multiplication of adventitious buds in MS+BA5mg/l+NAA0.5mg/l during subculture of L.sprengeri, L.squamigera.

石蒜属植物快速繁殖技术研究中，在无菌无性系建立阶段：鳞茎以0.1％HgCl_2消毒10-12分钟效果最好，而叶、根尖、鳞芽等较干净部位选用0.1％HgCl_2消毒7分钟；用三种石蒜属植物的叶片、根尖、鳞芽及带基盘与不带基盘鳞片进行培养，以带基盘鳞片诱导分化效果最理想，鳞芽易培养出芽，但数量有限，而叶片、根尖与不带基盘鳞片均未诱导分化；带基盘鳞片为石蒜属植物快速繁殖最佳外植体，以鳞茎中部3-15层芽诱导率高，较外层稍次之，内部鳞片诱导率最低；选用八等分法、六等分法、四等分法切割鳞茎，六等分法综合效果最好；每外植体带三鳞片培养最为适宜；三种石蒜属植物各自适合的培养基成分不同，换锦花在MS+BA5mg／l+NAA0.1mg／l中培养效果最好，夏水仙为MS+BA5mg／l+NAA0.5mg／l，而白花长筒石蒜在各培养基组合中培养效果均不理想，其适合的培养条件有待于进一步研究。

Intraspecific differences in plant height and stem diameter of clones varied with years and growth stages.

2无性系株高和茎径对UV-B辐射的响应具有明显的年际、生育期之间的差异，在伸长初期和中期最敏感。

The number of reproductive ramets and the biomass were lineally positive to cluster diameter and the number of cluster ramets.

在生物量分配上，星星草无性系对生殖生长的投入甚大，并未因为利于方式的不同来影响种群的调节。

As the growth rate of callus is slow in the solid medium in the process of culture, callus is not fit for industrialization of secondary metabolite. The cell suspension culture line was established using the callus in the solid medium.

由于在固体培养基上进行培养的愈伤组织生长速率较慢，不适于培养物中目标次生代谢产物的工业化生产，实验中又进一步以固体培养基上的愈伤组织无性系为材料建立了银杏细胞悬浮培养系。

The species and clonal composition of an orchard will, therefore, influence the amount of selfed seed in the total seed yield

因此，种子园的树种和无性系组成，会影响种子总产量中自交种子所占的数量。

The results indicated that the trait of fibre leng th has obviously het erosis,there may have positive effects among the genes controlling the trai t of fibre length,but may have negative effects among the genes controlling the t rait of wood density.

通过对美洲黑杨青杨（P.catha yana）的68个F2、双亲及其4个F1无性系田间随机区组设计，5次重复，分析了与木材材性有关的木材密度、纤维长、纤维宽以及微纤丝角等性状。

Different variation of 6 agronomic traits were observed in the progenies of different transgenic rice plants.

产生这些变异的主要原因是组织培养过程中发生了体细胞无性系变异，导入外源基因并没有直接影响农艺性状的表达。

Because white clover growth is highly variable, deterministic models should not be used to decribe the spread of white clover.

因为无性系生长有很大的变异性，确定性模型将不能用于白三叶的扩散。

Clones of white clover were studied to determine the degree of physiological interdependency among interconnected ramets.

本文研究了白三叶无性系植物种群，在相互连接的分株之间生理上相互依存的程度。

The published Kentucky bluegrass transformation system has many disadvantages including the diffculty of regeneration, high frequency of somaclonal, long-time transformation period and low efficiency of transformation.

现有的草地早熟禾遗传转化体系存在着植株再生困难、体细胞无性系变异发生频率高以及转化周期长、效率低等缺点，严重制约了早熟禾基因工程育种研究的发展。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐