诱变

60Co-γray was a useful mutagen in induced mutation breeding .After treated with 60Co-γray ,free-living conchocelis of wild Porphyra haitanensis were induced and represented in offsprings. Purple mutant and excellent practical characters strains were selected from a lot of gametophytic blades. Single cell clone and enzymolysis were used to propagate fast in pure strains of induced mutations.

坛紫菜野生丝状体经一定剂量60Co-γ射线辐照后，子代叶状体发生了变异，经大量培养后筛选出紫色突变体（3号Ⅰ）和经济性状优良的个体（7号Ⅰ和7号Ⅱ），通过体细胞酶解和单克隆技术快速获得诱变选育纯系，并对其主要经济性状进行了研究。

A mutant strain with high yield of Nisin, which was hereditarily stable, was obtained by the astronautics mutagenesis breeding technology.

通过航天诱变育种技术，获得一株乳链菌肽高产菌株SPA2222，该菌株在遗传稳定性状上是稳定的。

The strategies of large-scale mutagenesis and gene screen include chemical mutagenesis, insertional mutagenesis and gene trap.

用于大规模基因突变与筛选的主要策略有化学诱变、插入突变、基因诱捕。

The strategis of large-scale mutagenesis and gene screening include chemical mutagenesis,insertional mutagenesis and gene trap.

用于大规模基因突变与筛选的主要策略有化学诱变、插入突变、基因诱捕。

As a result, PB-mediated insertional mutagenesis permits for the first time the efficient production of mouse mutants for systematical functional analysis of the mouse genome.

PB转座系统第一次提供了在哺乳动物基因组水平高效诱变基因的工具，有助于系统地研究基因功能。

Methods Heat circumfluence extraction was adopted to withdraw and isolate Livistona chinensis active principle.The micronucleus tests in mice were carried out.

方法在药效实验跟踪下，从蒲葵子中提取分离抗癌有效成分；采用小鼠微核试验方法对其进行诱变性检测。

The traditional way for selecting strains is wide way, the modern microbiologic technology taking the gene engineering as center is also applied for strains breeding,and it becomes the main way gradually.

传统的诱变育种是最广泛的选育方法，以基因工程为核心的现代生物技术也应用于农用抗生素产生菌的菌种选育中，并逐渐成为农用抗生素菌种选育的主导技术。

The experimental results show:(1) The water in South Fei River has been comtaminated, especially in industrial and residential part.(2)Vicia faba(QI_1) is sensitive to mutagen, and liner relation between the freguency of micronuclear cell in the root tip cells of Vicia faba(QI_1)and concentration ...

结果表明，南淝河水体已被污染，尤其以工业区和居民生活区污染严重；启豆Ⅰ号对诱变物反应敏感，水环境中污染物浓度与微核千分率呈线性相关，因此启豆Ⅰ号作为微核监测技术的实验材料是可靠的。

Some members of this group of compounds are known to be mutagenic.

这些成分中有些是可以诱变的。

It was also found that the effect of protoplasts" UV mutagenic breeding was better than spores".

我们同时还研究了不同的培养温度对孢子的紫外诱变正向突变率的影响。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。