| 1. | An extensive program of chemical modificaton can also be carried out to discover more active avermectins
这种有白点的菌落形态与灰色菌落类似，可能为放线菌中形成的异核体。 |
| 2. | Seeing from the morphology of the colony and the structure and the morphology of the bacteria , the fungus is identified as the sac fungi
从菌落形态和显微镜观察到的菌体结构与形态情况看，初步确定该真菌属于子囊菌。 |
| 3. | These strains were primarily identified in generic or species level by their fruiting bodies , swarms , myxospores and vegetative cells
根据分离出菌株的子实体形态、菌落形态和细胞营养体、粘孢子形态，将其初步鉴定到属或种。 |
| 4. | Their morphological and physiological characteristics were observed through the strains colony morphology , size , color , growth rate , texture , and spores
用察氏平板培养基分离菌株，根据菌株的菌落形态、大小、颜色、生长速率、质地、生长培养基颜色变化以及菌丝体和抱子的形态特征进行鉴定。 |
| 5. | Protoplast regeneration , treatment of mutagenesis and other unknown factors can increase the genomic inherent instability , which usually affects the following five phenotypic traits : sporulation , pigmentation , colony morphology , antibiotic production and antibiotic resistance
基因组的不稳定性通常会影响菌株的以下五种表型特征：产孢，产素，菌落形态，抗生素产生水平以及对相应抗生素的抗性水平。 |
| 6. | Among them , the strain a has the highest activity and the fucoidanase activity is as high as 3 . 68u . after the thalli and colony features are analyzed , the strain a is identified to be erysipelothrix rosenbach according to bergey ' s manual of determinative bacteriology
通过对该菌株a个体形态，菌落形态及生理生化特征的分析，依据《伯杰氏细菌鉴定手册》 ，暂确定其归属于丹毒丝菌属( erysipelothrixrosenbach ) 。 |
| 7. | Pcr amplification using 2 degenerate primers for nitrogenase fe protein gene was performed with chromosomal dna isolated from the 29 isolates . the result suggested that a nifh amplicon of 323 nucleotides was detected in 7 isolates and the 7 isolates are c4 c5 g1 g2 , w5 t1 and t7 . these pcr amplified fragments were cloned , and sequenced
首先利用芽孢杆菌中芽孢的抗热性将土壤溶液在100沸水中煮10 - 15分钟，然后用选择性无氮培养基进行初筛得到29株菌落形态不同的菌株；接着用固氮酶结构基因nifh的特异性引物对这29株菌进行pcr扩增，结果表明其中7个菌株具有nifh基因，这7个菌株的编号依次为： c4 、 c5 、 g1 、 g2 、 w5 、 t1和t7 。 |
| 8. | Potato dextrose agar and grain medium were also used to identify fungi which were not determined by the primary culture . fungi were all secondarily cultured on sabouraud medium to observe the colony ' s texture , colour , growth rate , surface status and reverse pigment . the fungi should be examined by microscope to inspect their microscopic structure from 7th day to 21st day
使用的培养基有沙氏培养基、土豆培养基、真菌试验培养基和5种种子培养基，连续培养4周，并随时观察菌落的色彩、生长速度、表面状态、背面颜色等，并从第7天?第21天连续镜检以检查真菌的显微结构，综合菌落形态和显微结构，以确定真菌的种属。 |
| 9. | The distribution fractions of mutants with higher avermectin titer than the original had correlation with implantation dose . after ion implantation mutation there were many types of morphology of colony , we stdudied the relationship between the colony shape and the ability of yielding , found that gray and protuberant colony had the highest titer
离子注入后阿维链霉菌的菌落形态发生了很大的变化，其中灰色，边缘整齐，中间突出有开裂的菌落和为灰色，边缘波浪状，中间突出有放射状开裂的菌株产量较高。 |
| 10. | Observation on the conidia of 6 isolates belonging to four genera by sem indicated that there were remarkable difference between the genera . it was confirmed that the numbers of appendages and cells of conidia were steady characters for identification in the genera and species level . and the appendage knobbed on the top was also a very important character for the species identification
对以上四属11个种单孢分离菌株在pda培养基上培养性状的观察表明，菌落形态和颜色、菌落背面颜色和轮纹、产孢时间和产孢类型在属间具有重要的鉴别意义，在种内虽然不稳定，但不同种间确实存在差异，可以作为种间划分的参考依据。 |
