种子植物

Galvanometer (Digital Thermo - Hygrometer) Flower Structure Model (Clinometer (Dicot and Monocot Seed Germination Model) Human Heart Model 89 cm.

（单子叶植物根系结构模型）（花卉结构模型（叶和单子叶植物种子萌发模型）（人体心脏模型89厘米）。

Any of various vascular plants that reproduce by means of spores rather than by seeds,including the ferns and related plants,such as club moss es and horsetails.

蕨类植物任一种通过孢子而不是种子繁殖的维管状植物，包括蕨类和相关的植物，如石松和马尾

A clearly defined endodermis is seen in all roots and in the stems of the non seed-bearing vascular plants and some dicotyledons.

所有不产生种子的维管植物和一些双子叶植物的茎中都可以清楚的显示出这一结构。

Now, a lot of genes engineering antibodies, enzyme, incretion, plasma proteins, and vaccines have been expressed in the leaves, stems, roots, fructification, and other plant cells and organisms.

现在多种基因工程抗体、酶、激素、血浆蛋白和疫苗等都已在植物的叶、茎、根、果实、种子以及植物细胞和器官中得到表达。

This research using the experiment of seed germination preliminarily proved the chemical mechanism of the host plant.

通过加拿大一枝黄花地上部分水浸提液处理3种植物种子的实验，初步揭示了该植物的化学入侵机制。

A seed garden can include plants that disperse their seeds in different ways, from milkweed to sunflowers.

种子花园包含了从乳草属植物到向日葵等以不同方式播种的植物。

Producing PHAs,and then were orientationally inserted into a prokaryotic expression vector pBV220. By analyzing the bioactibity and function of their products, the biological function of phaA, phaB and phaC was confirmed. These have been done in our laboratory. To make better use of the three genes by plant bioreactor, two groups of different plant expression vectors that can be used to produce PHAs in different plants were constructed, and the transformation of PHA in Oxalis triangnlaris has been preliminarily reseached.The following is the main results:Three plant expression vectors pBI121-A,pBI121-B and ubquiting-C, which can be used to be transformed into Oxalis triangularis were respectively constructed by using the phaA, phaB and phaC.

菌株的亚克隆基因组片段中，分离出phaA、phaB和phaC三个基因片段，定向克隆至原核表达载体pBV220，通过对其生物活性与功能分析，确证了基因phaA、phaB和phaC的生物学功能；为了通过植物生物反应器对这三个基因进一步研究利用，本实验利用这三个基因构建了两组可用于不同植物生产PHA的真核表达载体，并对紫叶酢浆草进行PHA基因遗传转化的初步研究，获得主要结果如下：利用克隆的phaA、phaB、phaC三个基因分别构建了可用于转化紫叶酢浆草表达载体pBI121-A、pBI121-B、uBquiting-C；可用于玉米转化的种子特异性表达载体p7S-A、pBI121-S-B、uBquiting-C。

Development funct ional g enomics, w ith em phasis o n ef fects of auxin and brassinosteroid on

主要进行植物激素作用机理和植物种子发育功能基因组学研究。

Although high genetic diversity including variation of ploidy level, polyembryony and twin-embryonic phenomenon existed in the genus Coffea, there was less study on how about the apomixes in coffee.

咖啡属植物遗传类型丰富，具有多个倍性水平，偶见种子的多胚豆和双生苗现象，但是对于咖啡属植物中是否存在无融合生殖遗传特性，有关报道甚少，目前尚无无融合生殖材料选育的报道。

From the beginning of germination, radicle spread out and down from the seed capsule.

植物从种子萌发开始，胚根从种皮中伸出并向下生长，这种从胚中长出的根称为主根，随着生长过程的进行，又会在主根上长出侧根，而当侧根长到一定的时候又会长出次一级的侧根，这样不断生长就形成了一个植物的根系。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。