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Along with rapid development of bio-technology, artificial chromosome doubling in vitro is the efficiency approach of producing polyploidy plants. Advances on in vitro induction of autotetraploid in plants was reviewed.

随着生物技术的迅速发展,通过植物离体组织人工诱导多倍体已经成为获得多倍体植株的有效途径,本文就植物离体组织染色体加倍诱导同源四倍体的研究进展做一介绍。

Objective: To purify caffeic acid tetramer with macroporous resin on the basis of its fundamental physicochemical stability research.

中文摘要:目的:初步研究咖啡酸四聚体的理化稳定性的基础上选择合适的大孔吸附树脂,去除杂质,提高紫草水溶性部分中有效成分咖啡酸四聚体的含量。

Many-body analysis was also carried out to obtain relaxation energy and many-body interaction energy (two, three, and four-body), and the most stable conformer has the basis set superposition error corrected interaction energy of -102.61 kJ/mol.

多体相互作用分析表明,最稳定的氢键结构经基组重叠误差校正后总相互作用能为-102.61 kJ/mol,驰豫能,两体与三体相互作用能对总相互作用能的贡献较大,四体相互作用能对总相互作用能有很小的贡献。

The total inter-action energy of the most stable conformer has the basis set superposition error corrected total interaction energy 99.53 kJ/mol, and many-body analysis shows that two-and three-body energies have significant contribution to the total interaction energy whereas the relaxation energies and four-body energies are small.

对8个稳定氢键结构进行多体相互作用分析表明,最稳定的氢键结构经基组重叠误差校正后总相互作用能为-99.53kJ/mol,两体与三体相互作用能对总相互作用能的贡献较大,驰豫能与四体相互作用能对总相互作用能有很小的贡献。

The Yushulin oilfield is located in eastern slope of Sanzhao seg of central sag zone in the northern part of Songliao basin. Its main oil-producing formations are Fuyu and Yangdachengzi oil layers of mesozoic group cretaceous. Its reservoir is fluvial facies sediment. Main sandstone is positive circle channel sandstone with calcium in the beneath, and microelectrode curve is box distribution function. Its secondary oil-producing formation is Yaoyi part of Putaohua oil layer. Its reservoir is delta front sediment. Main sandstone is subaquatic distributary channel sandstone, and microelectrode curve is box distribution function.

榆树林油田处于松辽盆地北部中央坳陷区三肇凹陷东部斜坡,主要产油层系是中生界白垩系泉三、四段的扶余、杨大城子油层,储层为河流相沉积,主要砂体为有底钙存在的正旋回河道砂体,微电极曲线形态为箱型;其次为姚一段的葡萄花油层,储层为三角洲内前缘沉积,主要砂体为水下分流河道砂体,微电极曲线形态为箱型。

The DNA contents of the majority of multiple pengze crucian carp studied were close to that of tetraploidy, and the DNA contents of the minority of multiple pengze crucian carp were between that of triploid and tetraploidy.

结果显示,复合鲫的DNA含量明显多于母本种彭泽鲫的DNA含量,且所测14尾中多数个体的DNA含量超过或接近四倍体的DNA含量,少数个体的DNA含量介于三倍体和四倍体之间。

Monosomic 3, monosomic 5, monosomic 10, trisomic 4 and trisomic 5 as experiment materials, their meiosis behavior of pollen mother cell, pollen characteristics, physiological and biochemical characteristics of anther, section observation of pollen development and the structure of embryo sac were studied, and the effects on the seed set and transmission rate were analyzed.

本文以大白菜同源四倍体小孢子培养产生的且已鉴定为3号单体、5号单体、10号单体、4号初级三体、5号初级三体的非整倍体株系及二倍体株系等为试材,对各材料的结籽率、雄配子传递率进行了统计,并对花粉母细胞减数分裂行为、花粉特性、花粉发育和胚囊结构以及花药生理生化特性等方面进行了观察研究,进而分析了其对大白菜单体n-1雄配子和三体n+1雄配子传递率的影响。

Part 7 is the conclusion of this paper.The main research in this paper includes:1 The 22 mixed ligand complexes were synthesized in which bipyridine-, phenanthroline 5-nitrophenanthroline , phenanthroline- 5,6-dikentone and biquinoline are the first ligand and chlorine ion phenylalanine, tyosine asparagic radical 2.6-diaminocaproic radical tryptophan , histidine malonate(mal2-) benzyl malonate (bmal2-) phenethtyl malonate (pmal2-) are the second ligand.

本文具体研究内容包括四部分:一、合成了以联吡啶、邻菲啰啉、5—硝基邻菲啰啉、邻菲啰啉-5,6-二酮、联喹啉为第一配体,以Cl~-、苯丙氨酸根、酪氨酸根、天冬氨酸根asp~(2-、赖氨酸根、色氨酸根、组氨酸根、丙二酸根mal~(2-、苄基丙二酸根bmal~(2-和苯乙基丙二酸根pmal~(2-为第二配体的共22个混配配合物,制备了其中6个混配配合物和1个单配体配合物单晶,用X-射线单晶衍射法测定了晶体结构。

Is a tetraploid with tetrasomic inheritance and high heterogeneous genetic base, genetic segregation is more complicated than ones with disomic inheritance.

为高度杂合的无性繁殖同源四倍体作物,极其复杂的异质性和四体遗传导致加工品质和重要农艺性状遗传分析和改良困难。

Among these four varactors, two of them are fabricated on n-well and use the p-n junction between n-well and substrate to isolate substrate noise. The other two are fabricated on p-well and surrounded by deep n-well and n-well in order to isolated substrate noise.

这四种变容器中,其中两种生成於n型井上且利用介於n型井与基体的p-n接面隔绝基体杂讯;另外两种生成於p型井上且被深层n型井与n型井所包围以隔绝基体杂讯。

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