种质的

The decomposition of chromosome was a main problem in construction of BAC library. DNA discompose would be avoided or decreased by adjustments of component and pH of chromosome extraction buffer or pre-electrophoresis for 6-8h before digestion. Identification of inter-species hybrids was a necessary step for creating a new germplasm. Two samples were selected from offspring of hybridization and backcross of a cross between cabbage and Chinese cabbage.

鉴定种间杂种是利用远缘杂交创造新种质时的一项重要工作，本研究运用细胞核DNA含量流式测定技术，对甘蓝和白菜杂交及回交各世代的DNA含量进行检测，以监控遗传物质在不同材料间的流向，并从回交二代植株群体中筛选了两个材料，具有和白菜差异不显著的DNA含量，可推断其为核质杂种。

Variation existing between accessions from dooryard and from germplasm repositories manisfested that there still exists quite a lot genetic diversity out of germplsam repositories.

野外收集的枳资源与从各资源圃收集的资源包含的遗传变异有较大的差异，表明种质圃外资源还包含较丰富的遗传多样性。

The results at molecular level provided a feasible research foundation for germ plasma identification, genetic diversity analysis and hybrid parents selection in rice breeding.

这些DNA分子水平的结果可为水稻种质资源的鉴定、遗传多样性分析和水稻育种工作中杂交亲本的选择提供科学依据。

This study analyzed the genetic diversity of green foxtail, yellow foxtailand foxtail millet disturbed in the North of china using twelve allozyme (21 loci),such as AATS ADHS AMPS DIAS GDH.. IDHS MDHS ME~ PGD, PGI5 PGMS SKD. The test of gene flow between cultivated population of foxtail millet and its wild relative, green foxtail, was carried out in the field, using a dominant sethoxydim resistant line as a pollen donor and a population of green foxtail as a recipient.

本研究以我国北方近缘种青狗尾草为材料通过对12种等位酶（AAT、ADH、AMP、DIA、GDH、IDH、MDH、ME、PGD、PGI、PGM、SKD）共21个位点的分析研究它们的遗传多样性；以显性抗除草剂谷子种质作为花粉供体材料，以不抗除草剂青狗尾草作为花粉受体材料进行了栽培种向其主要近缘野生种基因漂移的检测研究。

Using logistic model, regression equations were established as followed: y=12.084 8/［1+exp (6.372 5-0.367 5x)］ and y=91.017 0/［1+exp （18.448 8-0.788 8x）］, which was used to evaluate the responses of maize inbred lines to head smut resistance.

采用逻辑斯蒂模型分别建立了抗、感自交系可溶性糖含量与田间发病率的一元曲线回归方程：y=12.084 8/［1+exp (6.372 5-0.367 5x)］和y=91.017 0/［1+exp（18.448 8-0.788 8x）］，以此建立了以接菌幼苗可溶性糖含量为指标的抗性评价方法，并用于未知抗性种质资源的鉴定。

In our experiment, microstructure of mycorrhiza and fungal species of Changnienia amoena were studied.

该文对独花兰的菌根结构和真菌类群进行了初步研究，以期填补中国独花兰菌根真菌研究的空白，最终达到保护独花兰种质资源、开发和利用独花兰的目的。

On the basis of the demand of wolfberry pruning and breeding, the wattle firmness of 26 wolfberry germ plasms were investigated and classified by adopting the methods of weight hanging in different positions of branches.

基于枸杞修剪和育种工作的需要，本文采用枝条不同部位挂重的方法对26份枸杞种质材料枝条的硬度进行调查和分类。

According to the method of multiobjectives decision-making and optimization,It was suggested that Triticum monococcum is a better source of wheat which is resistant to aphid."Qianjinzao" is a sensitive species.

通过多目标综合决策分析，认为1粒小麦和材料98-10-9是比较好的抗性种质资源，生产上广泛推广的千斤早是感蚜的品种。

Six soft wheat lines, of which SRC were lower than that of soft wheat variety "Ningmai 9" were screened, could be used in soft wheat breeding program.

根据SRC值的测定结果，筛选出了6个4种SRC均低于软质小麦品种宁麦9号的种质资源，这些资源可作为低SRC小麦品种选育的中间材料加以利用。

The complexity of the data analysis stems from the large number of experiments that can be performed by various mass spectrometers.

数据分析的复杂性源于能够通过各种质谱仪实施的大量的实验。

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。