无性系的

The genetic variation of natural stem-join characters of Paulownia fortunei clones was studied by means of field test and statistical analysis.

利用田间试验和统计分析的方法，研究了白花泡桐无性系自然接干性状的遗传变异规律。

In the test with randomized block arrangement, 31 female varieties of G. biloba and 4 male types of single plant clone were used to study the leaf yield traits and its relativity with leaf yield, leaf flavone and lactone contents.

方法］采用31个银杏雌性品种和4个雄株类型的单株无性系，随机区组排列，研究叶产量性状及其与叶产量的相关性，叶黄酮、内酯含量。

There are obvious differences between clones with regard to their self-fertility.

自交能孕性在不同的无性系中是明显不同的。

In this study, superior clones of 9503, 9516, 9526 and 9532 was successfully selected and thus made an upstanding base for further research.

本研究筛选出9503、9516、9526和9532等4个杜仲高产胶优良无性系，为下一步的工作打下了良好的基础。

Agrostis stolonifera new strain Yue Xuan No.1 was derived from Penncross -cultivar in old green.

粤选1号匍匐翦股颖新品系是丛Penncross建坪的老果岭中分离出的无性系。

Twenty eight clones of Alnus cremastogyne were studied on the main characteristics of leaf tissue and on their abilities in water loss controlling.

以28个桤木无性系为研究对象，对其叶片的主要解剖构造特征进行观察、测定与比较，并分析它们在控制水分上的能力。

Eight Alnus cremastogyne clones, which simulated with different concentration of sodium chloride, were measured with four physiological indexes, including SOD activity, MDA content, chlorophyll content and soluble proteins content.

以不同质量分数的盐胁迫对桤木Alnus cremastogyne 8个无性系，在盆栽条件下测定叶片中丙二醛质量摩尔浓度、超氧化物歧化酶活性、可溶性蛋白质量分数和叶绿素质量分数的变化。

Clonal plant population ecology is one of the most important component and research fields of the modern ecology....

无性系植物种群生态学是现代生态学中最重要的组成部分和热点之一，开展对这方面的研究具有重要的理论和实际意义。

The present thesis is intended to approach several aspects on the mechanism of plant somaclonal variation by cytological methods.

本论文拟从细胞学的角度探讨植物体细胞无性系变异发生机理方面的几个根本问题。

The results show that there existlaminal paraheliotropic movement and diaheliotropic movement under light stress,whichadjusts absorption of light energy.

结果表明：自然强光胁迫时，无性系通过叶角的&避光运动&调节对光能的摄取量。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。