诱变

The results of the experiment show that menadiol sodium diphosphate has no mutation effects on the procaryotic cell in vitro.

结果 当甲萘氢醌二磷酸酯钠的浓度在0.5、5、50、500、5000μg/皿，无论加或不加S9混合物时其对4株沙门菌株的回复突变作用均为阴性。结论甲萘氢醌二磷酸酯钠在体外对原核细胞无诱变作用。

Chromosome analysis is an important and difficult task in clinical diagnosis, mutagen dosimetry and biological research.

一、引言染色体分析是临床诊断、诱变因素剂量学和生物学研究的一个重要而困难的任务。

In addition, 11 mutants were also chosen form a commercial nursery. The main results are as follows: 1. It was the first time to conduct research on the germplasm innovation of Dracaena cambodiana.

首次对海南龙血树进行了种质创新途径的研究，田间自然变异的选择是目前最为有效的途径，组织培养分别结合EMS、60Co辐射和秋水仙素的诱变途径也是有效果的。

In the present experiment, the tender stems of Dracaena cambodiana were used as explants to establish a two-step tissue culture and regeneration system. The effects of types and concentrations of plant hormones on the induction of callus were studied. Based on these, the reactions of callus regeneration to different mutation-induced approaches (60Co irradiation, EMS and colchicines), the regeneration ability of the treated callus as well as the characters diversities (including the appearance traits and cytological observations) of the regeneration plants were investigated.

本试验以龙血树幼嫩茎段为材料，通过对龙血树幼嫩茎段两步培养法再生的研究，建立了龙血树幼嫩茎段离体再生体系，证明了愈伤组织的发生和激素种类与浓度的关系；并在此基础上研究了愈伤组织再生对不同人工诱变方法（60Co辐射、EMS、秋水仙素）的反应、被处理愈伤组织再生能力和再生植株性状多样性、以及再生植株不同生理角度的变异性，得到了2株变异株系。

Ultraviolet mutation was employed to screen resistant mutants to esculin ; on the basis,using the uniform design to optimize the ferment medium.

方法采用紫外线诱变处理，对大量抗七叶苷突变株进行初筛、复筛；在此基础上，利用均匀设计方法对发酵培养基成分进行优化组合。

The gene eui is one of the most important genes deployed in hybrid rice breeding, since it has been used to improve panicle exsertion of rice male-sterile lines.

水稻eui2突变体是通过诱变方法获得的，其表型特征是在抽穗期穗颈节间剧烈伸长，其伸长部位仅限于穗颈节间，而eui1突变体除了穗颈节间伸长外，其它各个节间也都显著伸长。

In order to identify the mechanism of melanic mutant of S. exigua, genetic regulation on pupae body color, puparial exuviae, phenoloxidase activity, dopamine andβ-alanine of SEW and SEM were investigated.

本文以SEW和SEM为材料，分别从蛹黑色性状的遗传规律、多酚氧化酶活力、电镜分析、高效液相分析、多巴胺和β-丙氨酸的微量注射及饲喂诱变几个方面进行了研究，以期找出甜菜夜蛾黑化的机理。

With gallnut as an inducement in this test, the activity of tannase under solid-state fermentation has improved greatly.

经紫外线诱变黑曲霉菌株筛选出1株高产单宁酶的黑曲霉B0201，利用五倍子为诱导物，固态发酵该菌株得到的单宁酶活力有较大提高。

The gamma radiation that mutated the Hulk's body fortified his cellular structure and added, from some as yet unknown source, over 800 pounds of bone marrow and tissue to his body.

伽玛辐射诱变的绿巨人的身体强化他的蜂窝结构和补充，从一些尚未来源不明，超过800磅的骨髓和组织，以他的身体。

This indicats that gamma ray irradiation can increase the frequency of mutations and produces special types of flower in Godetia grandiflora breeding.

以上结果表明，60Coγ射线辐射可以提高突变频率且诱变效应明显，有利于在大花高代育种中产生色彩丰富，花型、株型美观的变异类型

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。