The changes of etiology of community acquired pneumonia and antibiotics resistance . EFFECTS OF ULTRAVIOLET RADIATION ON PATHOGENICITY MUTATION OF Puccinia striiformis f. sp. Tritic

社区获得性肺炎病原学及致病菌耐药性变迁 紫外线诱变对小麦条锈菌致病性 突变的影响

Studies on the Selection of Tetracycline High-yield Strains by Ultraviolet Mutation to Protoplasts of Streptomyces aureofaciens

利用 紫外线 诱变原生质体筛选四环素高产菌株的研究

Method Ultraviolet mutation was employed to screen resistant mutants to esculin ;

方法采用 紫外线 诱变处理，对大量抗七叶苷（esculin）突变株进行初筛、复筛；

The ultraviolet light was studied for mutating Candida tropicalis 1254.The results showed : the highest rate of positive mutation was 49 % when the lethality rate was 86 % and the ultraviolet light treatment time was 40s .

利用 紫外线对热带假丝酵母1254进行诱变，结果表明：该菌株最高正 突变率（49%）时的致死率为86%，紫外线处理时间为40s。

Improvement of Trichoderma viride LTR-2 by Ultraviolet Mutation

绿色木霉LTR-2菌株的 紫外线 诱变改良

Breeding by Ultraviolet Ray Mutation of Kojic Acid Producing Strain and Studies on Fermentation Conditions

曲酸生产菌的 紫外线 诱变及发酵条件研究

Using wild type Aspergillus oryzae isolated from natural fermented millet catsup as original strain ( S ) several mutated strains were obtained by ultraviolet mutation .

以自然发酵的粟米酱中分离的野生型米曲霉为出发菌株（S），经分离、纯化后，采用 紫外线 诱变 育种的方法，获得新的变异菌株。

Therefore the net genetic distance of the aphid under ultraviolet was 0.12155 and on this level the rate of DNA mutation was about 47.6667 % .

紫 外辐射处理下的实际遗传距离为 0.12155，在该水平上DNA的 变异频率为 47.6667%。

Representation and technological process of ultraviolet induced mutation of strain for producing D-ribose .

D-核糖生产菌的 紫 外 诱变表征及工艺。

Fermentation by some microorganisms can lead to food preservation instead of food spoilage . EFFECTS OF ULTRAVIOLET RADIATION ON PATHOGENICITY MUTATION OF Puccinia striiformis f. sp. Tritic

经过发酵的食品可以使食品具有保藏性而不会发生食品的变质。 紫外线诱变对小麦条锈菌致病性 突变的影响

The Isolation Screening and Ultraviolet Mutation Breeding of Bacillus subtilis Strains Producing Extracellular Amylase

产胞外淀粉酶枯草芽孢杆菌的分离筛选及其 紫 外 诱变育种

Selection and RAPD Identification of Excellent Auricularia Auricula Strains by Ultraviolet Mutation

紫外线 诱变筛选黑木耳优良菌株及RAPD鉴定

Screening of high-yield strains of cholesterol oxidase by ultraviolet mutation and optimization of fermentation conditions

胆固醇氧化酶高产菌株的 诱变选育及产酶条件优化

Screening of a high γ - aminobutyric acid-producing Aspergillus oryzae ultraviolet mutation and studies on fermentation conditions

生物合成γ-氨基丁酸曲霉菌株的选育、 紫 外 诱变和发酵条件的研究