无性系

The content of flavanone and lactone in leaf and the leaf output were studied by randomizing block arrangement of 31 gingko female varieties and 4 staminiferous plant type single clone.

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，对叶产量性状及其与叶产量的相关性，叶黄酮、内酯含量进行了研究。

In tracheid traits correlation analysis, it has achieved the utmost point level of significance in tracheid length and tracheid width.

木材比重与管胞指标相关研究表明：它们在亲本无性系间达到了显著相关，在半同胞家系间的相关都不显著。

In this paper, 12 years old Chinese Fir clones were studied on the genetic variation of growth properties, basic density and tracheid morphological characteristics. The main results were as follows.

本文综合研究了12年生杉木无性系试验林的生长性状、基本密度和管胞形态的遗传变异规律。

The young -mature forest correlation in wood density,tracheid length, tracheid width is not notable in clones and its offspring of clonal seed orchards.

管胞长度与管胞宽度相关在家系间和无性系间都达到了显著水平。

Different opinions about the origination of somaclonal variation, which is a very common phenomenon in plant tissue culture, exist, such as the activation of transposable elements and DNA methylation.

植物体细胞无性系变异是植物组织培养中的普遍现象，关于这些变异的起源存在多种观点，如转座因子的活化、DNA甲基化等。

Some genetic bases underlye the plant somaclonal variation, which can be integratively determined and identified at morphological, cytological, biochemical and molecular biological levels.

植物体细胞无性系变异的发生有其遗传学基础，可从形态学、细胞学、生物化学和分子生物学等多个方面对其进行综合检测和鉴定。

There were significant differences among clones and among growth rings in wood densities.The radial direction variation in wood densities were unstably accending, the vertical variation patterns were not identical.

气干密度在无性系间和年轮间存在显著差异；株内径向变异随树龄增加呈波动性的上升趋势；株内纵向变异趋势在取样范围内不一致。

The results revealed that the dominant species was Vaccinium duclouxii, and more than 2/3 of tree species and 72.7% of the total individuals (DBH≥3cm) were regenerated by sprouting.

树种的萌生现象非常突出，超过2/3的树种具有萌生现象，在DBH≥3cm的植株中有72.7%是由无性系萌株产生的。

Such notable professionals as John Rivers hybridized various tree fruits, and introduced superior clones from France and elsewhere.

著名的专业工作者如John Rivers对各种果树进行了杂交，并从法国和其他地方引进优良的无性系。

It proliferates into clone s that produce a continuous supply of a specific antibody.

它能繁殖成一种能不断提供某种抗体的无性系

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。