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Every treatment combination has 4 replications.(1)The germination indexes of the former are higher than that of the latter; the germination of the former is stimulated by NaCl density of 0.3 %, while that of the later is restrained by all kinds of NaCl density.(2)With increasing of temperature and PEG indesity,the order of germination rate and vigor of Bromus stamineus and Bromus inermis is decreaced.(3)Under treatment of broadcast sowing and plant density of 549kermels·m~(-2), Bromus stamineus has the highest bud rate, fresh weight, seed yield, while treated with 25cm row spacing and 412kermels·m~(-2) plant densities, tillers, plant height, growth rate increased to the top;(4) Under treatment of broadcast sowing and plant density of 549kermels·m~(-2), its growth rate is took second place, while treated with 15cm row spacing and 824kermels·m~(-2) plant densities, it has the highest seed yield

3撒播时，引进种在播种密度为549粒·m~(-2)处理下单位面积出苗率最高，分蘖数最多，鲜重最大，单株最高，种子产量最大；生长速度在播种密度为412粒·m~(-2)处理下生长最快，密度为549粒·m~(-2)处理下稍次之，结合方差分析可以初步确定它在撒播时的播种密度为549粒·m~(-2)；(4)条播时，在行距为25cm、播种密度为412粒·m~(-2)处理下单位面积分蘖数最多，鲜重最大，单株最高，生长速度最快；种子产量在行距为15cm、播种密度为824粒·m~(-2)处理下最大，在行距为25cm、密度412粒·m~(-2)处理下次之；结合方差分析，就3种规格的行距来说，引进美国无芒雀麦条播时的行距为25cm，播种密度为412粒·m~(-2)；就这两种播种方式来说，应该选择撒播。

In seeds of Bupleurum chinese, some problems exist such as low germination rate and high inembryonate rate. To investigate the reasons for these problems, the phases of inflorescence differentiation and the variation of differentiation processes between inflorescences at different positions were studied.

为了了解造成北柴胡种子发芽率低、无胚率高等种子质量问题的原因，本文对北柴胡花序分化进程的各个时期以及不同位置花序分化进程的差异进行了研究。

Cacao tree is a kind of small arbor tree and it has the following outstanding features. First, cauliflory: its flowers burst open on the tree trunks directly and then the flowers will produce fruits on the tree trunks too. The cacao flowers are small, but the fruits are big. The fruits are elliptical and have many ridged lines on the outer skins. The color of the fruits is yellow, and each fruit can grow as heavy as one kilogram. Each cacao plant can grow 60 to 70 fruits, and there are about 30 to 50 seeds in each fruit.

可可是一种有趣的梧桐科小乔木，它最大的特点是&老茎生花&和&老茎结果&，花直接开在树干上，果也直接结在树干上，花小而果实大，果子呈椭圆型，表面有一条条棱形线突出，橙黄色，每个果子重达1千克左右，每株可可树可结60-70个果子，一个果子内有30-50粒种子，巧克力的原材料就是这些种子。

With our studying on Dendrobium candidum synthetic seed, existing problems and further development were also discussed.

结合我们在铁皮石斛人工种子方面的研究，提出了人工种子应解决的问题及今后的研究方向。

This thesis firstly analyzed the hard-seed forming process during the seeds development of Medicago falcata L. and Lespedeza davurica Schindler; then a feeding experiment with sheep, chicken and quail was conducted to investigate germination percentage change of 6 legume species seeds after ingestion. The results showed:(1)During the seeds development of M.falcata L.

本文首先以黄花苜蓿、兴安胡枝子为研究对象，分析了种子发育过程中硬实的形成过程；继而以羊、鸡和鹌鹑为饲喂对象，比较了 6 种豆科种子饲喂动物前后的发芽率变化，探讨了野生动物采食对硬实形成的作用。

Part I: Primary culture and purification of skeletal muscle derived satellite cells for tissue engineering applications To investigate separation and purification of skeletal muscle satellite cells with improved incontinuous density Percoll gradient centrifugation technique for tissue engineering applications.

第一部分：种子细胞—肌卫星细胞的原代培养及鉴定本部分通过应用改良Percoll非连续密度梯度离心法分离纯化培养新西兰兔骨骼肌干细胞—肌卫星细胞，探讨为组织工程膀胱的构建提供种子细胞的可行性。

O ne afternoon I was walking across the yard and stopped to pick up an acorn---one acorn, nut brown, glossy, cool to the touch; the crested top was milled and knurled like the knob on a safe.

一天下午在我走过庭院时拾到了一颗橡树种子---这颗橡树种子，有着棕色的坚硬果壳，光滑，并且有着清凉的触感；它的顶部被压碎了呈锯齿状如同保险箱上面的把手。

With the seeds from nine natural Cyclocarya paliurus populations as test materials, their phenotypic traits, including 1000-seed weight, seed size, seed diameter, seed thickness, and seed diameter/thickness ratio, were investigated, and the phenotypic diversity among and within the populations were studied by the methods of ANOVA analysis, hierarchical cluster analysis, and correlation analysis.

以青钱柳分布区内的9个天然群体种子为试材，对种子千粒重、体积、直径、厚度和径厚比5个表型性状进行了系统的比较分析，采用方差分析、相关分析及聚类分析等方法对群体间和群体内的表型多样性进行探讨。

Mung been ( Phaseolus radiatus L.) seeds were used as experimental material. Germination behaviour and changes in desiccation tolerance of seeds during imbibition, and effect of different dehydration rate on desiccation tolerance were studied.

以绿豆种子为材料，研究种子吸胀过程中的萌发行为、脱水耐性的变化以及不同脱水速率对脱水耐性丧失的影响。

We choose the seeds of pinaceae and taxodeaceae as research material of tree classification.

由于种子是一个复杂化合物的有机体，我们期望发现各不同种子化合物之间在成份上和组成方式上的共性和差异性，从热化学的角度对木本植物进行热化学分类。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。