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Taken from a 9 year old clonal test site were analyzed in order to investigate the genetic variation of wood properties, including air dried wood density and some mechanical properties.

该文利用 9个 9年生三倍体毛白杨无性系木材试样，研究了木材气干密度组成及力学性质的遗传变异规律。

Taken from a 9 year old clonal test site were analyzed in order to investigate the genetic variation of wood properties, including air dried wood density and some mechanical properties.

结果表明，木材气干密度组成及力学性质在无性系间存在显著或极显著差异，并受到中等强度的遗传控制；气干密度的径向和纵向变异与多数研究结果一致；力学性质除抗弯弹性模量和端面硬度外其株内变异趋势也基本符合木材学理论。

In order to provide a theoretical base for rapid clonal propagation of new variety of Hemerocallis middendorfii（＂Baltimore oriole＂,＂ Bettry woods＂）that was imported from foreign countries, 1/2MS media containing different concentration of NAA and IBA were used to regenerate from Hemerocallis middendorfii re-grown shoots without roots.

为了快速繁殖从国外进13的大花萱草新品种，本试验中以&红运&、&奶油卷&无根试管苗为材料，以1／2MS为基本培养基，加入不同浓度的NAA和IBA作为外源激素，对大花萱草进行生根诱导。

We measured morphological and physiological characteristics of C. asiatica in spring 2004 and 2005 at three levels: ramet population, clonal fragment and leaf. Environmental factors of different microsites were investigated again in September 2006. Important findings At the ramet population level, we observed no effect of habitat (forest edge vs. abandoned grassland slope).

在克隆片段水平，林缘和荒草坡生境显著影响积雪草的根干重、花果干重、一级匍匐茎节间长和总匍匐茎节间长，而不同草本层盖度小生境则显著影响花果干重、根冠比、一级匍匐茎数、二级匍匐茎节间长和总匍匐茎节间长。

Generally, local clonal diversity is determined by the dynamic balance between loss of established genets and recruitment of new genotypes via sexual reproduction or colonization, as described by Eriksson's recruitment mechanism.

通常情况下，局域克隆多样性取决于Eriksson种苗补充机制，即已有基因型丧失和新基因型补充之间的平衡。

The technique of CC can be used to study chromosomal changes of lung cancer, but the success rate in identifying clonal abnormal karyotypes is not high, due to the low mitotic activity, poor quality of chromosomes and the complicated karyotypic abnormalities.

特别是二例均有3号与17号染色体的易位，以及涉及13号染色体的易位(l号与13号或12号与13号易位)，这些易位是CC未曾发现的。

The results indicated that presences of some tree species were negatively correlated with the occurrence of ECM fungal sporocarps and the characteristics in clonal growth of fungal taxa would not be the only determinant in spatial pattern of ECM fungi.

外生菌根真菌群落可以定义为在一定地理范围和时间尺度内不同外生菌根真菌种群的组合。

The results indicated that there were significant differences between clones and all the coefficients of shrinkage that were found to be under strong genetic control. The vertical variation pattern within tree of shrinkage was downward with the tree height. The clonal repeatability's in shrinkage of oven-dried and air-d...

结果表明：木材干缩率在无性系间的差异都达到了极显著水平，并受到强度遗传控制；木材干缩在株内纵向的变异模式是随树高增加而降低；全干体积，径向、弦向干缩率和气干体积，径向、弦向干缩率无性系重复力分别为 0 89，0 95 ，0 84 ，0 6 7，0 84和 0 6 8。

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。

Under natural conditions, the clonal growing rhizomes of L.

因此，三种橐吾有性生殖的潜力依然很大。

Panorama Many people are dancing in a large sitting room.

在一个大客厅里，许多人在跳舞。

We fully understand how a microwave oven cooks food, it is first necessary to talk ...

我们充分理解一个微波炉煮的食物，这是首先要谈。。。