单倍体

Another form of apomixes in which seeds develop from unfertilized gametes can also be termed parthenogenesis.

以这种方式产生的种子不是单倍体就是二倍体，完全取决于大孢子母细胞是否经历减数分裂。

Wecompare the results among the polyploid Penna model, diploid Penna model and haploidyPenna model, to fred what are same among them.

将建立的多倍体模型与单倍体、二倍体模型进行定性的比较，发现它们在本质上的相似点。

Cytoembryological studies were employed to reveal theorigin of haploid and to determine the cytological factersrelating to the production of diploid polyembryony withinone embryo sac occurring in natural population of apolyembryonic line SB-1 of O.sativa.

SB-1自然群体中的单倍体来源于助细胞无配子生殖。细胞胚胎学研究表明，卵器中的一个或两个助细胞能在受精之前发育成胚，其发生率分别为观察子房数的2.24%和1.75%。

The mature sperm has a tail a nucleus containing haploid chromosomes and a front end with an acrosome the storage site for enzymes that will aid fertilization.

成熟精子有尾部，单倍体染色体组，头部有顶体，内部储存酶类，有助于受精。

In lower plants such as mosses and liverworts the persistent vegetative plant is haploid, the sporophyte being a relatively short-lived phase.

在苔藓，地钱这样的低级植物中，习见的植物体是单倍体，孢子体存在时间较短。

The pollinated cut plant, cultured in solution with 100 mg/L 2,4-ID, 40 g/L sucrose, 10 mg/L silver nitrate, 8 mI/I. sulfurous acid and 3 g/L calcium phosphate, produced the highest embryo rate, higher and more stable caryopsis rate.

因此，小麦×玉米杂交后24 h割穗，杂交穗在含有100 mg/L 2，4-D，40 g/L蔗糖，10 mg/L硝酸银，8 mL/L亚硫酸和3 g/L磷酸二氢钾的培养液中培养，单倍体胚诱导效果最好。

Synergid cells Two haploid cells located near the egg cell at the micropylar end of the embryo sac in flowering plants.

助细胞：存在于开花植物胚囊内，是位于珠孔端的卵细胞两侧的两个单倍体细胞。

In addition, the up-regulation of some proteins indicates the formation of some tissue and organ in the goldfish tail fin appearance stages.

另外一些蛋白质表达上调可能表明了单倍体胚胎在尾鳍出现期一些组织、器官的形成。

On germination, the zygospore undergoes meiosis to produce haploid cells that give rise to a new thallus.

在萌发期，接合孢子经历减数分裂形成单倍体细胞再产生新的植物体。

Were studied, and the tissue culture system was optimized.

实验中对小黑杨单倍体组培系统进行了优化，并探讨了影响转化率的几个因素如pH值等。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！