繁殖

ICF's reputation spread with a succession of "firsts" in captive breeding programs:(1) first red-crowned crane was hatched in the western hemisphere in 1975;(2) first hooded crane was hatched in captivity in 1976;(3) Brolgas was hatched for first time in North America in 1979;(4) first captive hatching of Siberian crane was made in 1981;(5) ICF pioneered "isolation rearing" efforts to release captive cranes in the wild from 1984-85;(6) ICF hatched its first wattled crane in 1993, making it the first institution to have bred all fifteen species of cranes successfully.

首先在鹤类的饲养繁殖方面做出了巨大贡献，其中下面几个方面创造了前所未有的功绩：（1）在1975年，在西半球首先孵化了丹顶鹤；（2）在1976年，首先在人工饲养条件下孵化出了白头鹤；（3）在1979年，在北美首先孵化出澳洲鹤；（4）在1981年，首先孵化出了白鹤；（5）在1984年~1986年，首先使用"隔离饲养"方法把人工饲养的鹤释放野外；（6）在1993年， ICF 第一次自己孵化出了肉垂鹤，从而成为首家能繁殖所有15种鹤的机构。

Towards the difficulty of breed the Aralia elata , the author explored effect methods of asexual reproduction .

针对龙牙楤木繁殖困难的现况，研究了有效的龙牙楤木无性繁殖方法。

The number of grey heron Ardea cinerea L. was lower in 1990-1991 when water level was normal and birds had not bred yet than in 2000-2001 when water level was low at the reservoir and the breeding colony has existed.

与水库水位低、繁殖群已经形成的2000-2001年相比，苍鹭的种群数量在水位正常、尚未繁殖的1990-1991年相对较低。

Caudatum was studied. 0.05 mg/L could be the critical mass concn. of P. caudatum fitting to Cu(superscript 2+).Below this concn., the polysaccharide content in P. caudatum was increased in a small range with the increment of mass concn. of Cu(superscript 2+),then the growth and propagation of P. caudatum was strengthened and above this concn., the polysaccharide content was decreased significantly with the increment of mass concn. of Cu(superscript 2+), then the growth and propagation of P. caudatum began to be restrained obviously and the poison was more obvious when the concn.

结果］0.05 mg/L可能是大草履虫适应Cu(上标 2+)的临界质量浓度，低于此浓度时，大草履虫体内的多糖含量随着Cu(上标 2+)质量浓度增大而呈现小幅度的增高，大草履虫的生长繁殖得到增强，高于此浓度时，大草履虫体内的多糖含量随着Cu(上标 2+)质量浓度增大而显著地降低，大草履虫生长繁殖开始明显受到抑制，且浓度越高受毒害越明显。

The results showed that the clonal reproduction was preponderant, but it has still a high genetic diversity (Ho=0.7148). At the same time, Corylus heterophylla Fisch genetic individual was found. A single cluster was basically a genetic individual; adjacent clusters were basically the same genotype and clonal reproduction has larger percentage.

结果表明：平榛虽然克隆繁殖占有优势，但仍具有较高的遗传多样性(Ho=0.7148)；同时确定了平榛的遗传个体，同1株丛内个体基本上为1个独立的遗传个体，相邻的株丛个体基因型基本一致，克隆繁殖比率较大。

David Layzer, writing in his semiscientific book Cosmogenesis, argues that "the central property of life is not reproductive invariance, but reproductive instability."

戴维雷泽尔在他科普性的书《宇宙发生说》中辩称，&生命的核心价值不在它繁殖的不变性，而在它繁殖的不稳定性。&

David Layzer , writing in his semiscientific book Cosmogenesis, argues that "the central property of life is not reproductive invariance, but reproductive instability."

戴维雷泽尔在他的科普性书籍《宇宙发生说》中辩称，&生命的核心价值不在于它繁殖的不变性，而在于它繁殖的不稳定性。&

Objective: To determine optimum culture conditions for the seed embryo culture and rapid propagation of Dendrobium candidum .

中文摘要：目的：研究铁皮石斛种胚萌发和快速繁殖的组织培养技术，为铁皮石斛的繁殖建立最佳培养条件。

To study the growth factor called medium that makes bacteriabreed rapidly and to identify the bacteria within the same system so as to prevent resistant strains. Methods Bacteria were cultured in V type medium and i dentification and drug susceptibility tests were performed.

通过对促细菌快速生长繁殖因子即细菌培养基成分进行科学配比研究，促使细菌能快速生长繁殖，并在同一体系内同时对细菌进行鉴定防止耐药菌株泛滥作了初步探讨[1，2]。

On the basis of DDRT-PCR technique we found that:Total of 331 differential displayed cDNA bands from 1161 were displayed in the 4x4 diallel cross combinations with 30 pairs of primers, which shows the differences of gene expression between hybrids and their parental lines were very obvious in quantity and quality.

采用mRNA差异显示技术和荧光定量反转录PCR技术，从随机mRNA差异显示和候选功能基因mRNA表达定量分析两个方面，研究了32周龄杂种鸡及其亲本纯种的基因差异表达及其与繁殖性状杂种优势的关系，探讨了鸡繁殖性状杂种优势形成的因素及其分子遗传机理。

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。