配子体

In plants that undergo ALTERNATION OF GENERATIONS, spores are produced by meiosis by the sporophyte generation, so are usually haploid; they germinate to produce the haploid gametophyte generation.

在具有世代交替的植物体中，由孢子体世代进行减数分裂产生孢子，因此多为单倍体。它们将发育为单倍体的配子体世代。

To further understand mechanisms that control male gametogenesis and embryo development,we performed an genetic screen for mutations that caused distorted Mendelian segregation in Ac/Ds transposon system in Arabidopsis thaliana.

通过卡那霉素抗性(由突变体中标记基因编码)非孟德尔分离，从Ds插入的拟南芥突变体库中筛选到一个雄配子体发育突变体：ovp1和一个早期胚胎发生突变体eed1，我们对这两个突变体的表型和相关基因进行了研究。

In vascular plants, the sporophyte is the dominant generation, while in bryophytes it is parasitic on the gametophyte.

维管植物以孢子体世代为主，而在苔藓植物的孢子体寄生在配子体上。

These mainly involve the periodic change of ribosome den- sity,the dedifferentiation and redifferentiation of both plastid and mitochondrion during the process of meiosis.

在这个过程中，小抱子母细胞经减数分裂产生大致相同的4个减数抱子，并逐渐发育成雄配子体。

The spores of Cheilolejeunea ventricosa X.L.He were cultured on MS media (without acid and vitamin, pH=6.2, with 1% agar and 1% sucrose). The sporeling development and oil body ontogeny were observed. After a 55-day-long axenic culture, young plants were obtained successfully. Sodium hypochlorite solution was used to sterilize the capsules. Our results revealed that the sterilizing treatment with 0.1% Sodium hypochlorite solution for a period of 5 seconds was optimal. Oil bodies in primary protonemata are nearly homogeneous, but distinctly compound in the leaf cells of the primary leafy shoots.

首次研究了膨叶唇鳞苔的孢子萌发、原丝体和油体发育及配子体发生的过程，结果表明：(1)使用经过改良的MS培养基（不加氨基酸和维生素，pH值为6.2，琼脂和蔗糖浓度均为1%）能在55 d左右的时间利用孢子培养获得植物体；(2)用0.1%的次氯酸钠溶液，消毒5 s是消毒孢子的最佳方案；(3)油体在孢子萌发初期为均一型，到幼叶发生后，成为可见的聚合型，但聚合的程度比野生材料要弱。

The haploid plant produces gametes mitotically and is thus termed the gametophytes while the diploid plant produces spores meiotically and is called the sporophyte.

单倍体植物有丝分裂产生配子体，二倍体减数分裂产生孢子体。

There is a polarized organelle, Golgi complex consisted of several saccules and some vesicles beside the nucleus and there are some osmiophilic bodies beneath the parasite pellicule.

结果表明，配子体是一渐进发育的单核、惰性虫体，其核旁有一个由扁平囊和泡状小体极性排列组成的细胞器———高尔基体，虫体被膜下有嗜锇小体。

Furthermore, HBsAg gene expression was obtained in zygotic sporophytes by using male gametophytes-targeted bombardment.

继而利用雄配子体途径也实现了HBsAg在海带二倍体孢子体中的稳定表达，提示利用海带表达口服乙肝疫苗具有一定可行性。

The fertilization was processed by sperm in mature male gametophyte combining with egg cell on the top of archegonia on June 15 or so.

摘要樟子松发育成熟的雄配子体中的精子6月15日左右在颈卵器中上部与卵细胞结合，进行受精作用，其后，受精卵进行游离核分裂，形成8个子核时，开始形成细胞壁。

Then the female gametophytes were induced from the vegetative cells of the parthenogenesis juvenile sporephytes whose rhizoids were cut off.

采用切除假根的方法从孤雌生殖幼抱子体体细胞中诱导出雌配子体。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。