配子体

The results showed: four devices flower pollen sacs, anther wall conforms to the basic, from epidermis, the indoor wall, middle (2-3 layers) and tapetal composition tapetum to glandular type.

对悬铃木小孢子发生及雄配子体发育过程进行了观察，结果表明：花药具4个花粉囊，花药壁发育为基本型，由表皮、药室内壁、中层（2-3层）和绒毡层组成，绒毡层为腺质型。

Effects of extracting liquor from seven species of bryophytes on seed germination, seedling growth and physiological characteristics of Zea mays were investigated.

研究了7种苔藓植物配子体水提液对玉米种子萌发和幼苗生长及生理特性的影响。

The initiati on and development of archegonia in Gingko,compared with those of cycads, w ere liked to be more primitive at the evolutional level.

银杏雌配子体及颈卵器的发生与发育，和苏铁类植物比较，在演化程度上可能更为原始。

In the Coniferophyta the female gametophyte is reduced to a nonphotosynthetic tissue with up to 2000 nuclei in the ovule, which produces archegonia.

松柏类植物的雌配子体成为颈卵器，其胚珠为含有2000个以上的核的非光合组织，（参见 archegonium ）。

The female gametophyte is represented by the embryosac, the archegonia being absent.

雌性配子体存在于胚囊中，颈卵器缺失。

Most female gametes have two synergids that play a key role during fertilization in more than 80% angiosperms.

助细胞是被子植物雌配子体的组成细胞之一，是大多数被子植物完成受精作用的关键环节之一。

During the formation of the germ cells only one member of each pair of homologs is passed on to the gametes.

当生殖细胞形成时，一对同源染色体中的两条分别进入两个配子体。

The proportion of megaspores to forming sporelings was only about 12%. Frequently no more than 1% of the sporelings grow up to become mature individuals.

在已萌发的雌配子体中，幼苗的形成率仅为12%，模拟中华水韭野外生长的条件下移栽幼苗，其成活率非常低，不足1%。

A two directional SSHcDNA library of cold acclimation about Physcomitrella patens gametophyte was constructed.

本实验构建了一个小立碗藓配子体冷胁迫的SSHcDNA双向文库。

The moss Physcomitrella patens exhibits a very high rate of homologous recombination in its nuclear DNA, making gene targeting approaches in this plant as convenient as in yeast or in ES cells of mice.

苔藓植物具有相对简单的发育模式，单倍体的配子体在其生活史中占主导地位，作为研究植物生物学过程的模式系统具有诸多的优越性。

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。