查询词典 reproduction

The content of mineral elements in ripe fruits of M.sieversii from 78 seedings at Mohe Town,Gongliu Country were analyzed using Atomic Absorption Spectrophotometer.The results indicated that M.sieversii seedings presented considerable genetic variations in content of mineral elements with the range of variation coefficients from 24.2% to 54.0%.So it has large potential for further selection.Four elite seedlings were selected,namely large fruit type,high Ca content type,high Zn content type and high damascenone content.As the predominant component of Ily wild fruit tree forest,Malus sieversii had occupied an area of 9300ha.But the inherent reproduction system of M.sieversii and genetic diversity of the species were destructed in different degrees,as a result of farming assart,over grazing and damage by Agrilus mali.

上述结果支持&新疆野苹果可能是栽培苹果祖先种&的结论；②对巩留县莫舍乡的新疆野苹果78个实生株系果肉组织Ca、Mg、Fe、Zn、Cu、Mn6种矿质营养元素进行测定的结果表明，每种矿质元素含量单株间差异显著，变异系数在24.2％～54.0％，遗传多样性丰富，进一步选择的潜力很大；③根据新疆野苹果果实形态、香味物质和矿质元素含量等的测定结果，初步筛选出了大果型、高钙型、高锌型和大马酮型等4个特异性状单株；④调查发现，由于农田开垦、过度放牧以及苹果小吉丁虫的蔓延危害，目前伊犁野果林面积逐年减少，野苹果固有的繁育体系和遗传多样性受到不同程度的破坏。

The biological characteristics and parameters for different geographic populations of Anastatus japonicus Ashmead in the eggs of Antherea pernyi were compared with the method of life table. The results show that the fecundity properties parameters of Vietnamese population including the net reproduction rate (R0), intrinsic rate of increase, finite rate of increase, doubling time, number of eggs laid per female, preoviposition period and oviposition period are superior to Guangxi, Guangdong and Hainan population.

应用生命表技术对荔蝽平腹小蜂Anastatus japonicus Ashmead不同地理种群以柞蚕卵为繁殖寄主的条件下的重要生物学指标和参数进行测定和比较，结果表明，越南种群的主要生殖力指标，包括净生殖力（R0）、内禀增长率、周限增长率、种群倍增时间、单雌产卵量、产卵前期和产卵历期均比广西、广东和海南种群的理想；4种群的雌蜂寿命、羽化率和雌性比率则没有显著差异。

Because of its apomictic reproduction character, an accurate and rapid identification of the F_1 hybrid seedlings of Malus xiaojinensis is of great importance to both genetic study and utilization of the precious genes in the germplasm.

为了建立用现代分子标记鉴定苹果杂种实生苗的方法，在本论文中我们对小金海棠和山荆子F_1代杂交实生苗79个单株进行了RAPD分析，并用SSR标记对RAPD标记的初步鉴定结果进行了进一步的验证。

Because of its apomictic reproduction character, an accurate and rapid identification of the F1 hybrid seedlings of Malus xiaojinensis is of great importance to both genetic study and utilization of the precious genes in the germplasm.

由于小金海棠具有无融合生殖特性，早期准确、快速、有效地鉴定其F1代杂种实生苗对于研究利用其众多抗逆基因具有重要意义。

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。

Besides, the genetic differentiation also existed among subpopulations. We deduced that the limited gene flow and breeding type were important factors leading to genetic differentiation. The genetic structure of Aristida pennata populations reflected its characteristics of clone reproduction and the good adaption to the severe environments.

本研究认为羽毛三芒草种群遗传多样性很丰富，遗传结构较为复杂，亚种群间遗传多样性大，亚种群间存在一定遗传分化，基因流和繁育方式是导致种群遗传分化的主要因素。

Assortative mating Sexual reproduction in which the pairing of male and female is not random.

选型交配：有性生殖中配对的雌雄双方不足随机交配的现象。

The vast majority of follicles undergo a degenerative process in reproductive life. Apoptotic cell death is the fundamental mechanism in response to follicular atresia. Moreover, the apoptosis of granulose cells is implicated in directly mediating atretic process. Multiple studies have confirmed that the apoptotic process of GCs is not only related to apoptotic genes, but triggered by cytokines related to reproduction and Caspases family.

中文题名几种生殖激素对体外培养的牦牛卵泡颗粒细胞凋亡的影响副题名外文题名 Effects of several reproductive hormones on apoptosis of ovarian granulose cells of yaks in vitro 论文作者杨世华导师余四九教授学科专业临床兽医学研究领域\研究方向学位级别博士学位授予单位甘肃农业大学学位授予日期2002 论文页码总数108页关键词牛类固醇激素分泌卵泡颗粒细胞培养牦牛生殖激素馆藏号BSLW /2003 /S823 /1 卵泡闭锁是哺乳动物卵巢中极为普遍的自然现象。

The security unit is particularly useful as part of a memory unit that is attachable to a recording/reproduction device such as a digital audio recorder/player.

当安全装置用作可接装在记录／再现设备比如数字音频记录器／播放器上的存储器单元的一部分时，该安全装置尤其有用。

To obtain aseptic PWN, the septic eggs were treated with 30% H2O2 and the observations of effects of PWN with bacteria on the reproduction of PWN were carried out under axenic conditions.

用双氧水处理松材线虫卵得到无菌卵，在无菌条件下，研究松材线虫携带的细菌对其繁殖的影响。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。