The oocyte is effectively a tetraploid cell.
卵母细胞是有效的四倍体细胞。
The new technology of induction tetraploid is reported.
报道了长牡蛎四倍体诱导的新技术。
Facultative apospory in tetraploid paspalum distichum l.
四倍体双穗雀稗兼性无孢子生殖的研究。
Conclusion: The variant plants belonged to tetraploid plants.
结论：初步证明诱变植株为同源四倍体。
Tissue culture was a new and efficient way to obtain tetraploid...
组织培养可以成为获得四倍体甜瓜的有效途径。
Tissue culture was a new and efficient way to obtain tetraploid melon.
组织培养可以成为获得四倍体甜瓜的有效途径。
They are complex polyploids, being partly tetraploid and partly hexaploid.
它们是复杂的多倍体，其中一部分是四倍体，一部分是六倍体。
I'm afraid the details are confidential, but I treated a tetraploid man once.
恐怕细节是机密的，但是我对待了一个四倍体的男人一次。
The high efficient transformation system of tetraploid black locust has been established.
建立了四倍体刺槐高效遗传转化体系。
This article summarized the latest progress in grape tetraploid induced with colchicines.
综述了秋水仙素诱导葡萄四倍体研究的最新进展。
Homozygous tetraploid is a relatively balanced system, the continued selection is invalid.
纯合的四倍体是一个相对平衡的系统，继续选择是无效的。
Dot plot image of DNA fluorescence could form region of diploid and tetraploid in integrated cell.
结果显示：结构完整的细胞DNA的荧光点图形成二倍体、四倍体的区域。
It is extraordinarily important to select tetraploid lines for breeding sugar beet polyploid varieties.
四倍体品系选育是甜菜多倍体育种不可缺少的重要环节。
Chromosome count showed that the plants, containing non tetraploid cells besides amphidiploid, were chimeras.
染色体检查发现，除了四倍体之外，还存在其它倍性的细胞，呈嵌合体状态。
Thus, we can obtain the ES mouse completely from ES cells with the method of tetraploid embryo complementation.
利用四倍体胚胎补偿技术就可以得到完全由ES细胞发育而来的小鼠。
Objective To report a case of acute myeloid leukemia (AML) with CD7 + near-tetraploid clones by doublet(8; 21).
目的报道1例以CD7+和双重t（8；21）易位为特征的近四倍体克隆急性髓细胞性白血病（AML）。
Thus, it is important that elucidate the genetic control of the crossability of Chinese tetraploid wheat with rye.
因此，研究中国四倍体小麦的亲和性问题具有特殊的意义。
Manipulation of chromosome in tetraploid breeding resulted in not only euploids, but also a great many aneuploids.
四倍体育种中染色体组操作的结果除了产生整倍体外，还产生大量的非整倍体。
By observing plant stomata, it shows us the stomas are larger than diploid, but the tetraploid density is smaller.
对杜仲二倍体和多倍体的气孔进行了观察比较发现二倍体杜仲的气孔长度小于多倍体的，气孔密度则相反。
Since the first tetraploid was obtained in 1939, polyploidy breeding has always been the focus of watermelon breeding.
从1939年获得第一个四倍体西瓜以来，多倍体育种就一直是西瓜育种的一个热点。
Meanwhile the author used he method that self-reproduction in tetraploid Pacific oyster to build the tetraploid population.
通过四倍体的自群繁育，建立了稳定的太平洋牡蛎四倍体群体；
Tetraploid cells are preferentially allocated to the extraembryonic tissues, such as placenta, rather than the fetus itself.
而在胎儿本身的组织中，很少能找到四倍体细胞的存在。
In vitro of ovules in 7 cross combination between diploid and tetraploid cultivars of grape were studied in this experiment.
对7个葡萄二倍体与四倍体杂交组合的胚珠进行离体培养研究。
The bacteria multiply rapidly within the tetraploid cells and become surrounded by a membrane synthesized by the host plant.
细菌在四倍体细胞中快速繁殖，并逐渐被宿主植物合成的膜所包围。
Apart from this study, we also researched photosynthesis, stomatal conductance of the tetraploid plants and the control ones.
除此之外还研究了四倍体植株叶片的光合速率、气孔导度的日变化的情况。
The food value of leaves of artificially tetraploid mulberry (ATM) of 297 varieties was appraised in the silkworm rearing trial.
对297份人工四倍体桑种质的叶质进行养蚕鉴定。
Since the first tetraploid watermelon was obtained in 1939, polyploidy breeding has always been the focus of watermelon breeding.
从1939年获得第一个四倍体西瓜以来，多倍体育种就一直是西瓜育种的一个热点。
Objective To investigate the effects of developmental stages of tetraploid embryos on mouse chimeras from embryonic stem cells (ES).
目的探讨四倍体胚胎发育阶段对胚胎干细胞（ES）嵌合体小鼠制备的影响。
Under the same temperature, the electrolyte exosmosis rate and damage of cytomembrane of tetraploid plants were lower than diploid plants.
对四倍体和二倍体催眠睡茄植株进行低温处理后，比较电解质外渗率和细胞膜损伤率。
Nutritional composition in muscle of tetraploid loach, diploid loach and Paramisgurnus dabryanus were determined by using conventional method.
利用常规肌肉营养分析方法测定了四倍体泥鳅、二倍体泥鳅和大鳞副泥鳅的肌肉营养成分。
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