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The formation and development of embryo sac in the diploid and its autotetraploid of rice cultivar IR36 was examined using Laser Scanning Confocal Microscopy.

利用激光扫描共聚焦显微镜术对水稻品种IR36二倍体及其同源四倍体的胚囊形成和发育过程进行了系统的研究。

Secreted variable lymphocyte receptors form pentamers or tetramers of dimers bind antigens with high specificity and avidity.

分泌型的VLRs以四聚体或五聚体的形式识别、结合特异性抗原。

Five concentrations of colchicines were used to treat aerial bulbil in garlic inflorescence for polyploid induction in vitro.

用5种不同浓度的秋水仙素处理大蒜花苞气生鳞茎进行多倍体诱导,发现在固体培养基上接种处理时毒害作用较小,四倍体的诱导率最高能达到66。

It is found that the hazard of colchicines to aerial bulbil is much less in solid media than in liquid media,and the highest induction rate of tetraploid garlic is 66.7% in solid medium.

用5种不同浓度的秋水仙素处理大蒜花苞气生鳞茎进行多倍体诱导,发现在固体培养基上接种处理时毒害作用较小,四倍体的诱导率最高能达到66.7%。

The yield of TAMD was only 20% without participation of acetic acid, and it was almost 0% without chloranil.

没有冰乙酸,醇色体的收率仅为20%;没有四氯苯醌,醇色体的收率几乎为零。

The effect of acetic acid and its consumption, chloranil and its consumption on the preparation of TAMD by means of dioxygen liquid-phase oxidation of TMAL was probed into, and the results showed that both of them had great influence on the yield of TAMD.

探讨了冰乙酸及其用量、四氯苯醌及其用量对氧气液相催化氧化孔雀绿隐色体制取孔雀绿醇色体的影响,发现二者对醇色体的收率和纯度均有很大影响。

ABSTRACT Objective: To determine polysaccharide contents in different intervarietal of diploidy and tetraploidy Banlangen, and to provide scientific evidences for developing and utilizing resources of Banlangen.

第二军医大学学报991015 摘要目的:测定二倍体的不同品系与四倍体板蓝根中多糖的含量,为综合利用板蓝根资源提供科学依据。

Unquestionably, GAFP belongs to the family of monocot mannose binding lectins in terms of its homology to other family members on primary sequence and three-dimensional structure as well.

但与这一家族已报道结构不同,GAFP是第一个被解析的单体凝集素结构,而非常见的二体或四体。

Tetraploid A cell or organism containing four times the haploid number of chromosomes.

四倍体:具有四个的单倍染色体组的细胞或生物体。

Long treatments(7–43 min — about three quarters of the period of meiosis I in triploid eggs). yielded only heptaploid cells among the embryos.

在抑制三倍体受精卵第一极体(PB1)过程中,处理时间的不同对后代四倍体的得率有明显影响。

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Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

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