株苗

The enzyme linked immunosorbent assayhas been done to detect Avain Leukosis Virus in the albumen from two flocks of chicken and one Marek's disease vaccine. The percent sample positive for ALV in one flock is 11%, the other is 29%.

用酶联免疫吸附试验，对2群鸡的鸡蛋清和1株鸡的马立克氏病疫苗进行检测，发现2群鸡的鸡蛋清中，鸡白血病病毒的阳性率分别是11％和29％，鸡马立克氏病冻干苗隐藏鸡白血病病毒群体特异性抗原的阳性率为100％。

Three-hundred and ninety-nine fungal isolates were obtained from 686 diseased cotton seedlings and soil samples collected from cotton production areas in Northern Xinjiang by using the conventional method,among which 272 strains of R.solani were identified.Based on Giemsa staining,all strains were identified as multinucleate Rhizoctonia solani .

从新疆北疆棉区采集了典型的棉花立枯病病苗及棉田土标样686份，按常规分离方法分离得到399个分离物，从中鉴定出272个纯化的立枯丝核菌( Rhizoctonia solani Kühn)菌株。

Bacillus subtilis str. B5423, Pseudomonas fluorescens str. Pf7-14, nonfluorescent pseudomonads str. P13 are antagonistic to rice sheath blight. Resistance to antibiotic is the character that was chosen to use to mark the strains in order to monitor the population dynamics of the strain on the surface of rice plant and to elucidate the mechanism of suppressing the diseases.

中文题名拮抗细菌的生态学及其对水稻纹枯病的抑制作用副题名外文题名 Ecology of biological control agents and their suppressive effect on rice sheath blight 论文作者李湘民导师许志刚教授苗东华博士学科专业植物病理学研究领域\研究方向植物病害生物防治学位级别博士学位授予单位南京农业大学学位授予日期2002 论文页码总数116页关键词纹枯病拮抗细菌水稻馆藏号BSLW /2003 /S435 /19 Bacillus subtilis B5423，Pseudomonas fluorescens Pf7-14，和非荧光假单胞肝菌Pseudomonas sp.P13是对水稻纹枯病菌有拮抗作用的三支细菌菌株。

Results showed that the seed germination rate,emerged seedling rate and survival seedling rate of Platanus aceriflia Willd.decreased with dose increase at the dose of 50～400Gy,as well as the plant height,fresh weight and length of root.

结果表明，在50~400Gy辐射范围内，随着剂量的增加，悬铃木种子的萌发率、出苗率、成苗率降低，株高、鲜重、根长也明显下降。

The use of smoke bud propagation unearthed March-April, 40-50 cm height of the sword and coat bud bud to ramet reproduction clothing.

吸芽繁殖采用3-4月出土、苗高40-50厘米的剑芽和褛衣芽进行分株繁殖。

Stems of Ipomoea batatasLam in vitro were cultured on MS rhizogenic base medium. ifferent combinations of CO2 concentration and photosynthetic photo flux density in microenvironment were controlled and recorded by special system. The plantlets getting the highest net photosynthetic rate were treated by the combination of (Ci=8 720 μmol mol-1,PPFD=250 μ mol m-2 s-1). Then, the plantlets had been further cultured for 21 d in such microenvironment.

以新兴蔬菜叶用甘薯组织培养苗的茎节段作为外植体，用MS低糖、无激素培养基进行生根培养，设置不同的CO2浓度和光合光量子通量密度对组培植株进行环境调控处理，获得小植株净光合速率最高的处理组合=8 720 μmol mol-1， 250 μmol m-2 s-1），并在此组合下继续培养21 d。

Bt gene was successfully transferred into elite supersweet maize hybrid by overy injection in the field, and one transgenic plant ZT11 integrated with Bt gene was obtained.

用子房注射法将Bt基因导入超甜玉米品种粤甜3号，获得了1株整合有Bt基因的转基因植株，定名为ZT11，以发芽成苗的植株计算，基因转化效率达9.09%。

The growth of plantlets with the height of 1-2 cm and 3-4 leaves was compared on MS basal medium containing various organic compounds, including banana, carrot, potato, coconut water, and tryptone. The result showed that the growth of oncidium plantlets was the best on medium containing banana, potato and tryptone altogether with respect to their plant height, leave number, root number, root length, fresh weight, and dry weight. The next better media were the control and the Banana medium, followed by the Potato medium.

另外取高约1-2公分，带3-4片叶片的分化小苗，培养於含不同浓度有机添加物（香蕉、胡萝卜、马铃薯、椰子水、及tryptone）的半量MS培养基，以探讨最适合文心兰瓶苗生长的培养基，试验结果显示，在同时含香蕉、马铃薯及tryptone三种成份的培养基生长的小植株不论在株高、叶数、根数、根长、鲜重、及乾重均较其他培养基为佳；不含添加物之1/2MS培养基、及含香蕉的培养基次之，而在含马铃薯之培养基较差。

Not be able to choose the growth of thin and delicate fruit of the plant or after admission rhizome stubble issued pumping big bud, the seedlings grow weak, the results of late, with its high smoking bud propagation of bunchy top disease.

不能选择生长细弱的母株或收果后残株地下茎抽发出的大叶芽，此苗长势弱，结果迟，用其吸芽繁殖容易发生束顶病。

Some differences of pathogenicity of different cotton isolotes were observed on cotton seedlings, but not on cotton bolls.

来自棉花上的不同苎麻疫霉菌株对棉苗的致病力存在一定的差异，但对棉铃的致病力差异不明显。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。