诱变的

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。

This program is to explore the high tech and traditional breeding of a new variety of porphyra haitanensis, in hope of its fast growth, high quality and endurance of high temperature. this variety has been growing various areas, and it shows that is yield increases above to 26 %-30%, and the content of three main pigments (phycoerythrin, phycocyanin and chlorophyll a) increases 10 % at least. and it has stronger capability of resisting disease and fester.

本项目利用人工诱变和体细胞单克隆技术等高新技术和传统的选择育种相结合的方法，分离出生长快、优质，高产，抗高温等的优良品种，在生产上大面积推广应用，并获得了分离坛紫菜稳定色素突变体的技术和建立坛紫菜的快速良种选育实用技术；新品种亩产提高26%-30%，3种主要色素(藻红蛋白、藻蓝蛋白、叶绿素a)提高10%以上，抗病烂能力较强。

Result proves that ultrasound frequency is higher in the same time, lethality rate increases with the increase of radialization time on the same frequency, at the same time, its physiological character changes.

试验结果表明，在相同的时间内，超声波频率越高对试验菌株的致死率越高；同一频率，超声波辐射时间增加也可使试验菌株的致死率增高，同时经过诱变处理后的菌株其生理生化特性也有变化

The results were as followed: 1 Mutagenesis Breeding of High Tannase Activity Strains and preparing of Tannase As a original strain, Asp. niger CY was mutated by UV treatment. One strain was obtained from the mutants.

全文实验结果如下： 1 单宁酶菌种的选育和单宁酶的制备以一株产单宁酶的黑曲霉为出发菌株，进行了菌株的诱变选育，得到了一株单宁酶高产菌株。

It proved that the mutations are generally the transformation or transversion but not the insertion or deletion.

本研究得出的初步结论或推论如下： 1）经过亚硝基胍和PCR诱变法获得的一系列突变体在核苷酸基础上只发生了点突变，由此导致其蛋白质的序列也只是发生了个别氨基酸的突变。

And we also research the impact of methylating on hydrogen bond and stacked bond in base pairs under considering water molecules.

研究结果表明，烷基化之所以能造成碱基错配是它可使碱基的质子迁移或烯醇互变现象容易发生，改变原有原子的电荷分布或配对模式，同时碱基自身的互变异构体会跟烷基作用，致使互变异构体能够稳定存在，影响正常碱基配对，引起碱基诱变，造成生理疾病的发生。

Research has shown that since many of the cancer causing compounds are in almost all foods which are then eaten and stored in the human fat tissues that Burdock might very well be of help in fighting cancer because of the role that it can play in depleting these mutagens.

研究表明，由于许多致癌化合物是在几乎所有的食物，然后食用，并储存在人的脂肪组织的牛蒡很可能会有所帮助，因为在抗癌的作用，它可以发挥臭氧这些诱变。

Biocontrol may be an alternative to avoid these problems in tobacco disease control. Ata28 strain is an antagonistic bacterium against tobacco brown spot was isolated from healthy tobacco in Chongqing.

Ata28菌株是从重庆烟区烟草健康植株上分离获得的烟草赤星病拮抗细菌，在PDA平板上可明显抑制烟草赤星病强致病力菌株Tbs3的生长，温室控病效果较好；为了进一步提高拮抗细菌Ata28菌株对烟草赤星病的防治效果，本研究采用紫外线、紫外线和氯化锂、硫酸二已酯及微波对Ata28菌株进行诱变选育，以期获得拮抗性能更强，生物学性状更好的优良菌株，为大田使用提供理论依据和实践经验。

And then re-use the nitroso muscle strain mutagenesis, in order to collect acid analog of GABA as a selection factor has been a 18% increase in production of new strains 42,, this new high-yield flask under the conditions of strain in the process were studied.

然后又对该菌株再采用亚硝基肌诱变，以撷氨酸结构类似物氨基丁酸作为筛选因子又得到一株新的产量提高18%的菌株42，，对此新的高产菌株在摇瓶条件下的工艺进行了研究。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。