胚根

Pisang Mas as transformation receptor, and optimized the genetic transformation system of banana from aspects of hygromycin selection concentration and selection method in order to establish a high efficient Agrobacterium tumefaciens-mediated genetic transformation system for banana.

为建立根癌农杆菌介导的香蕉高效遗传转化系统，本研究以雄性花诱导产生的贡蕉胚性悬浮系为转化受体，从潮霉素筛选浓度和筛选方法两方面进行了优化。

The contents of chlorophyll were also decreased. New protein spots were induced and some protein spots were lost in root, plumular axis, chloroplast, when seedlings were treated with 1.0 mmol/L Cd(superscript 2+). A positive relationship was observed between the inhibition of seedling growth and changes in biochemical characteristics.

在1.0mmol/L Cd(上标 2+)溶液处理下，与对照相比，黄瓜幼苗的根、胚轴、叶绿体中的蛋白质组分发生变化，即蛋白缺失、新蛋白合成以及蛋白表达量的上调或下降，同时其生化性状（蛋白质组分、叶绿素含量）的变化与幼苗生长抑制呈正相关。

We propose that ethylene is part of a signaling pathway that modulates cell diision in the quiescent center in the stem cell niche during the postembryonic deelopment of the root system.

我们假设在根系统胚后发育过程中，次乙基调节在干细胞维环境静止中心区域的细胞分裂的一个信号转导通路

To study furderly the activity of CNTF mutant designed by computer molecular modling,this study used the methods of dissociated cultures of chick dorsal root ganglion、TF-1 prolification and the normal mice′weight loss tests.

为了进一步研究我室应用计算机分子模拟设计并表达纯化的睫状神经营养因子突变体蛋白的生物学活性，分别采用鸡胚背根神经节无血清培养法、TF-1细胞增殖法、正常小鼠减重法对其活性进行研究。

The results indicated that the mutant protein promoted the survival of dorsal root ganglion、induced TF-1 prolification and made the normal mice lose weight,decrease appetite and reduce fat index.The weight loss effect was dependant with its administration dosage,ED50 was 150.986?

结果是突变体蛋白能促进鸡胚背根神经节的生长；促进TF-1细胞增殖，MTT测定法表明突变体蛋白与国际参考品相比，比活不低于2.0×106U/mg；使正常小鼠的体重减轻，摄食量减少，脂肪指数下降，并且体重的减轻与突变体蛋白的给药剂量呈现良好的剂量依赖关系，其ED50为：150.986？

The embryo consists of a hypocotyls-root axis, with a rootcap and apical meristem at one end and an apical meristem and several cotyledons, or seed leaves, at the other.

胚胎有胚桥-根轴，藉由 rootcap 和顶上的分裂组织在一端和一个顶上的分裂组织和一些子叶或种子树叶，在另一个。

Histologically,the activity of cell division in scutellar epithelium and callus cluster derived from it was higher in cultivar Aikoku than Moritawase.Moreover different types of differentiation in the epithelial callus were observed,the rootlike structures and globular cell clusters with epidermislike structure were found in the calli of cultivar Moritawase and Aikoku respectively.

组织学的观察表明，Aikoku的种胚盾片上皮组织以及由上皮细胞起源的愈伤组织的细胞分裂活性高于Moritawase；而且在上述2个品种中还观察到不同的细胞分化类型，在Aikoku的愈伤组织中观察到了带有表皮状结构的圆形细胞块，而在Moritawase的愈伤组织中却观察到了根状结构。

Methods Concanavalin A, wheat germ agglutinin, Sambucus nigrn agglutinin, Ricinus communis agglutinin-I and phytohemagglutinin were labeled with horseradish peroxidase by an improved sodium periodate method, and the synthetic HRP-agglutinins were used for determination of the expression levels of polysaccharide in common α-hemolyic streptococcus and in the α-hemolyic streptococcus after space mutagenesis.

采用改良的过碘酸钠法将辣根过氧化物酶分别标记在刀豆凝集素、麦胚凝集素、接骨木凝集素、蓖麻凝集素I及植物血凝素上，合成HRP-凝集素，检测普通型α-溶血性链球菌及太空型链球菌菌体内多糖分子的表达水平。

And the author found taking the seeds treated by GA3,being cut at the part of hila, and embryo as explants in tissue culture, better than endosperm, blade, petiole and shoot, could get good callus induction.

还特别进行了桃儿七外植体的筛选工作，发现用胚和GA_3浸泡过并且种脐部分进行了切口处理的种子作为外植体效果较好，比起叶片、叶柄和根有更好的愈伤诱导率。

With the Sand culture method, influences of different magnesium levels (0%、50%、100%、150%、200% and 300%) was explored to the wheat seedlings of different stages. Many targets such as plant height, root length, biomass, content of chlorophyll, activity of root, RGY, RGR and ratio of root to crown of the wheat were mensurated at the time of 7d, 15d and 30d of two leaves stage of wheat seedlings after their endosperms were removed at different magnesium levels.The results showed that different magnesium levels had unlike influences over the wheat seedlings.

以小麦为试材，采用砂基培养的方法，在镁浓度分别为对照组的0%、50%、100%、150%、200%和300%的营养基质上，培养剔除胚乳后的二叶期小麦幼苗7d、15d及30d，并分别测定该3个时间段小麦幼苗的株高、根长、地上部和地下部的生物量、叶绿素含量、根系活力以及相对生长速度、相对生长速率和根冠比等指标，研究不同供镁水平对不同时期小麦幼苗生长速率的影响。

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。