查询词典 callus

The results indicated:0.1 mg/L 2,4-D or 0.1 mg/L 2,4-D+0.2 mg/L KT was optimal to induct the callus of carrot hypocotyls.The majority of the callus induced on the medium containing 0.1 mg/L 2,4-D regenerated embryoid,whereas,the callus induced on the medium containing 0.1 mg/L (2,4-D)+0.2 mg/L KT produced adventive buds.During the growth of regenerated plant,MS medium is available for rooting of seedling,and seedling regenerated on B5 medium must be placed on the B5 medium containing 0.1% IBA to develop root.

试验结果表明：0 1mg/L2，4 D或0 1mg/L2，4 D+0 2mg/LKT的激素组合有利于胡萝卜下胚轴的愈伤组织诱导；在0 1mg/L2，4 D的培养基上形成的愈伤组织主要以胚状体的形式再生，而在含0 1mg/L2，4 D+0 2mg/LKT激素组合的培养基上形成的愈伤组织主要以发生不定芽的方式再生；再生过程中，B5基本培养基上的苗子不易生根，需要附加0 1mg/L的IBA，而在MS培养基上苗子可直接形成根。

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。

At early stage after brain injury, there were a quantity of fibrous callus and cartilaginous callus formation in brain injury and fracture group and many neuropeptides immunoreactive nerve fibers in callus were found. Strong immunoreactivites of CGRP, SP, VIP, NPY, TOH occurred to osteogenitor cells and chondroblast, which proliferated in thickened endothecium.

脑损伤合并骨折组早期形成大量纤维骨痂和软骨骨痂，骨痂中神经肽免疫阳性神经纤维较多，明显增厚的骨膜内层骨祖细胞、幼稚的软骨细胞胞质内降钙素基因相关肽、P物质、血管活性肠肽、酪氨酸羟化酶、神经肽Y强阳性表达。

The results showed that the number of chromosome, which was from the cultured seedlings of meristem tip and the rank seedlings of meristem tip, was not altered, both the number were 2n=16,the hereditary stability of callus and regeneration plant was poor; and the variation percentage of chromosome in callus was 43.4%, among which haploid accounted for 6.7%, triploid accounted for 2.5%,tetraploid accounted for 10%,pentaploid accounted for 4.2%,hexaploid accounted for 3.3%,septuploid accounted for 4.2%,octoploid accounted for 3.3%,dysploid accounted for 9.2%;the chromosome variation percentage of differentiation seedlings derived from callus was11.7%,among which haploid was 6.7%,triploid accounted for 1.7%,tetraploid was 3.3%.

结果表明，茎尖分生组织培养的幼苗及丛生苗遗传稳定，其染色体未发生倍性变异，均为2n=16；愈伤组织及其再生苗遗传稳定性较差，愈伤组织染色体数变异率为43.4%，其中单倍体占6.7%、三倍体占2.5%、四倍体占10%、五倍体占4.2%、六倍体占3.3%、七倍体占4.2%、八倍体占3.3%、非整倍体占9.2%；愈伤组织分化苗染色体变异率为11.7%，其中单倍体占6.7%，三倍体占1.7%，四倍体占3.3%。

The results showed as follows: 3mg/LBA in differentiation medium was favorable for regeneration of callus; addition of 3mg/LABA, sucrose substituted with maltose, or sucrose partially substituted with mannitol in subculture media improved the status of callus in a degree and enhanced the differentiation frequency; partial desiccation treatment significantly increased the regeneration frequency of callus; addition of AgNO3 or CuSO4 in differentiation medium contributed to plant regeneration , The two resistant calli and fifteen regenerated plants were obtained when the calli of mature embryo of 7001S were infected with Agrobacterium carrying bar and CPTI gene.

结果表明：3mg/LBA对分化有利；继代培养基中加入3mg/LABA，以麦芽糖代替蔗糖，或以甘露醇代替部分蔗糖在一定程度上可以改善愈伤组织状态，提高分化率；干燥处理能明显提高愈伤组织分化率；分化培养中添加一定浓度的AgNO3和CuSO4有利于愈伤组织分化。借助农杆菌介导bar基因和CPTI基因对水稻进行遗传转化，获得2块抗性愈伤组织和15棵再生苗。

The results showed as follows 3mgLBA in differentiation medium was favorable for regeneration of callus; addition of 3mgLABA, sucrose substituted with maltose, or sucrose partially substituted with mannitol in subculture media improved the status of callus in a degree and enhanced the differentiation frequency; partial desiccation treatment significantly increased the regeneration frequency of callus; addition of AgNO3 or CuSO4 in differentiation medium contributed to plant regeneration , The two resistant calli and fifteen regenerated plants were obtained when the calli of mature embryo of 7001S were infected with Agrobacterium carrying bar and CPTI gene.

结果表明：3mgLBA对分化有利；继代培养基中加入3mgLABA，以麦芽糖代替蔗糖，或以甘露醇代替部分蔗糖在一定程度上可以改善愈伤组织状态，提高分化率；干燥处理能明显提高愈伤组织分化率；分化培养中添加一定浓度的AgNO3和CuSO4有利于愈伤组织分化。借助农杆菌介导bar基因和CPTI基因对水稻进行遗传转化，获得2块抗性愈伤组织和15棵再生苗。

Results showed that green firm callus and rooting were obtained with treatments of NAA 0.5-3.0mg/L, in which the NAA 0.5mg/L treatment appeared the optimal rooting result of 90%. White loose callus was obtained with treatment of 2,4-D0.1-3.0 mg/L.Callus can not be induced by adding BA solely at 0.5-3.0mg/L. There appeared bud redifferentiation only when appropriate concentration of combined BA,NAA and 2,4-D were applied.

结果表明：单独加入NAA0.5～3.0mg／L可诱导出绿色致密的愈伤组织，并再生出根，其中NAA0.5mg／L处理生根率最高，达90％；单独加入2，4-D0.1-3.0mg／L可诱导出白色疏松的愈伤组织；单独使用BA0.5—3.0mg／L不能诱导出愈伤组织；BA与NAA或2，4-D只有在适当的质量浓度范围内配合使用才能分化出芽，芽分化率最高的处理为BA3.0mg／L＋NAA0.5mg／L，分化率为30％。

Methods Mouse models of tibia fracture healing were established, and callus samples were collected 1, 3, 7, 14, 21 and 28 days after fracture. The development of callus and new bone formation were evaluated with roentgenology, Micro-CT and tetracycline double labeling method, and the expression of HIF-1α, vascular endothelial growth factor, Runx2 and ALP in callus were detected with RT-PCR, Western blotting and immunohistochemistry. The relationship between HIF-1α and fracture healing was analysed.

建立小鼠胫骨骨折模型，骨折后1、3、7、14、21、28 d取材，应用X线摄片、Micro-CT和四环素荧光双标记技术，观测骨痂组织的演变和新骨形成状况；采用RT-PCR、Western blotting和免疫组织化学方法，检测骨痂组织细胞HIF-1α、血管内皮生长因子和成骨性标志物（Runx2和ALP）的表达状况，分析HIF-1α与骨折愈合进程的关系。

As the growth rate of callus is slow in the solid medium in the process of culture, callus is not fit for industrialization of secondary metabolite. The cell suspension culture line was established using the callus in the solid medium.

由于在固体培养基上进行培养的愈伤组织生长速率较慢，不适于培养物中目标次生代谢产物的工业化生产，实验中又进一步以固体培养基上的愈伤组织无性系为材料建立了银杏细胞悬浮培养系。

We studied the optimum medium and hormone combination of callus induction from cotyledons, subculture of callus, shoot regeneration from callus, shoot-extension induction, root induction and identified the chromosome number of the plantlet. The results showed that: MS+2,4-D 2.0mg/L+KT 0.5mg/L, MS＋2,4-D 2.5mg/L＋KT 0.5mg/L, MS+2,4-D 0+KT 1.0mg/L, MS+KT 0.5 mg/L and basal MS medium. One plantlet among twenty two was determined as a tetraploidy based on the plant morphology, observation of the leaf stoma and chromosome number of the root, other two plantlets represented morphological variation.

结果表明，诱导章丘大葱子叶产生愈伤组织、愈伤组织的继代培养、愈伤组织芽分化、芽点的伸长及诱导生根的最佳培养基及激素配比分别为：MS+2，4-D 2.0mg/L+KT 0.5mg/L、MS＋2，4-D 2.5mg/L＋KT 0.5mg/L、MS+2，4-D 0+KT 1.0mg/L、MS+KT 0.5mg/L和MS基本培养基；试管苗经驯化移栽后，共有22株成活，成活率为92%，对成活的再生植株进行形态学、叶片气孔及根尖染色体鉴定表明，共有3株发生变异，其中2株为外部形态上的变异，而另一株为染色体的加倍变异。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。