无性系的

The content of the abscisic acid and soluble protein, the activity of SOD all have clear changes.

低温处理后，欧美山杨杂种不同无性系叶片中ABA含量、可溶性蛋白质含量和SOD活性均发生明显的变化。

We analyse the adjustment of the birch reeds to the cold and drought from the conductance, K+ filtrate, SOD, POD, MDA, content of the water-soluble protein, penetration of the bioplasm film, photosynthesis and fluorescence.

3通过对欧洲优良无性系在寒冷、干旱的胁迫下电导率、钾离子的渗透率、酶促防御系统，膜质过氧化物，可溶性蛋白含量、原生膜透性和光合、荧光等生理指标的变化，对欧洲白桦优良无性系苗期的适应性进行分析。

We have a summarize on the feasibility of birch indrought on whole too.

从宏观上对欧洲白桦优良无性系引种的可行性进行了概述。

The results indicated that individual selection was suitable in Buffalo grass breeding even within seedling population.

实生苗群体内可以采用单株选育优良无性系，并选择出一些较好的中间育种材料。

According to the partial correlation coefficient between the growth of forest and leaf nutrient,the N、 K content in leaf of clone S2 affected the growth of breast-height diameter mostly,and influenced the growth of tree height were Mn 、 P 、 N、 Cu content.The K、 N、 P content in leaf of clone S8 affected the growth of breast-height diameter mostly,and influenced the growth of tree height were Ca、 N content.

4从林木生长与叶片营养的偏相关系数大小来看，影响无性系S2人工林胸径生长的主要是叶片中N、K元素含量，而影响树高生长的主要是叶片中Mn、P、N、Cu元素含量；在无性系S8人工林中，影响胸径生长的主要是叶片中K、N、P元素含量，影响树高生长的主要是叶片中Ca、N元素含量。

The female parents are 4 choice [1] ness clones in Chinese fir primary orchard. The male parents are 3 polyanthus clones in the gene pool of old Chinese fir, the mixed pollen of these clones and all the clones in this gene pool. The testing woods were founded with 18 cross grouping which were obtained by the using of NCⅡ.

以经过子代测定的杉木初级种子园中的4个优良无性系为母本，老杉木种质资源库中的3个花芽较多的无性系及其混合花粉和种子园混合花粉为父本，采用测交系交配设计进行杂交制种，获得18个杂交组合并以此营建试验林。

Purpose of the experiment was searching for the method of cutting reproduction of Elaeagnus mollis., providing a foundation for the clonic selection in the wild population, and offering sufficient quantity of clone stocks for studying the relation between growth and nitrogen—fixing root tubercle bacteria.

本试验的目的是研究翅果油树扦插繁殖方法，在其野生群体中进行无性系良种选育的效果，以及翅果油树生长与固氮根瘤菌之间的关系，为接种■氮根瘤菌提供足够数量的无性系苗木。

The individual growth,morphology and population biomass of Pennisetum centrasiaticum clones at two different habitats of farmland-sand dune ecotone on Keerqin sandy land of Inner Mongolia were compared in this study.P.centrasiaticum clones had significant morphological plasticity and different biomass distribution pattern at different habitats.

对生长在不同沙地生境下的白草无性系进行了个体生长与形态以及种群生物量等指标的比较研究。结果表明，生长在不同生境下的白草无性系表现出显著的形态可塑性和不同的生物量分配模式。

With the prolongation of the time of Pb and Cd stress, the chlorophyll content of the clones and families were induced to first increase and later decrease, except that NEF14 and NEF12 were downtrend at all times. With the increasing of Pb and Cd concentration the chlorophyll content decreased fastly in the latter stress period. The downtrends of NE60 and NEF14 which were stress-resistence were small.

随胁迫时间的延长，杂交鹅掌楸无性系和家系(但NEF14和NEF12一直呈下降趋势)的叶绿素含量先升后降，随着Pb、Cd处理浓度增大，在胁迫后期叶绿素含量下降越明显，抗性较强的NE60无性系、NEF14家系降幅较小。

Growth and photosynthetic indices (seedling height, shoot biomass, root biomass, root length, chlorophyll content, net photosynthetic rate, and stomatal conductance) from 1-year-old seedlings of six shrub willow clones (JW22-2, JW51-3, JW1065, JW2334, JW2345, JW2372) with different salt stresses were studied.

以江苏省林业科学研究院新近杂交培育的6个灌木柳无性系1年生扦插苗为试材，采用水培试验方法，研究了0~3gL^(-1)范围内不同质量浓度氯化钠胁迫对灌木柳无性系幼苗生长及光合作用的影响。

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