胚

Results The expression of endogenous LN was found in the basement membrane of epithelium, glands and blood vessels in uterine endometrium of both estrus and early pregnancy. And its was faint that LN present in basement membrane as the implantation occurs, but the LN immunostaining in the epithelial cells of endometrium was stronger. The exogenous LN has no obvious influence on blastocyst attachment and implantation. LN-antibody intra-uterine injection showed significant repressing effect on mouse blastocyst implantation.

结果 动情期及妊娠早期小鼠子宫内膜内源性LN在上皮和腺基膜及血管内皮基膜均有表达，并随着植入的发生基膜的LN表达减弱，而内膜上皮中LN免疫染色逐渐增强；外源性LN对小鼠胚泡粘附与植入子宫内膜不产生明显影响，层粘连蛋白抗体明显抑制小鼠胚泡着床。

The callus induction of licorices was easy. And the MS+1.0 mg/L NAA+1.0 mg/L 2, 4-D +1.0 mg/L 6-BA was the best medium to cotyledons, hypocotyls and radicles. And all the induction rates were 100%. 4. In the study of callus regeneration, only obtain the regeneration plants of hypocotyls callus,and its frequency was 4.57%.

甘草离体再生中愈伤组织的诱导较为容易，三种外植体子叶、下胚轴和胚根均以MS+1.0 mg/L NAA+1.0 mg/L 2，4-D+1.0 mg/L 6-BA为愈伤组织诱导的最佳培养基，在此培养基上，3种外植体愈伤组织诱导率均达到100%。

Seeds linear-oblong, not beaked, coma silky white; endosperm copious; cotyledons linear, flat, radicle short.

种子线状长圆形，不发，种缨绢状白色；胚乳丰富线形，平的子叶，胚根短。

Ovary 2- or 3-loculed, posterior locule with 1 developed or abortive ovule or empty, anterior 2 locules each with 1 or 2 ovules.

2或3室的子房，后面的室具1发育或败育胚珠或空的，前面2子房室其中每个1或2胚珠。

The purpose of this study was to determine the relationship between abscisic acid and the development and germination of the seed of Pachira macrocarpa.

结果表明：马拉巴栗种子发育过程中，种皮、子叶和胚轴的ABA含量先升高，后下降，最高值出现在花后50 d，最高值分别为791.45、352.68和567.85 ng/g，种皮中ABA具有向内扩散的趋势，含量始终高于子叶和胚轴。

The embryogenic calli were induced from immature embryos of 9 combinations of maizes.

用9个组合的玉米幼胚为外植体，诱导出胚性愈伤组织。

Megaspore mother cells undergo meiosis, which results in the formation of 4 megaspores in a row. The chalazal-most cell develops into an 8-nuclei embryo sac after 3 rounds of mitosis. A mature embryo sac is produced after cellularization and nuclear migration.

结果表明：1大孢子母细胞经过减数分裂形成直线排列的4个大孢子，其中珠孔端的3个大孢子退化，合点端的大孢子进行3次有丝分裂，形成八核胚囊， 8个核迅速细胞化，最终发育为成熟胚囊。

This review is focused on the recent research progresses of related genes in the development of embryo, endosperm, and miosis, and several genes may involved in the regulation of apomitic development.

本文介绍了植物胚发育、胚乳发育、减数分裂等涉及无融合生殖过程的相关基因的研究进展，同时介绍了可能与植物无融合生殖途径调控相关的几个基因片段的研究情况。

Twenty hybrid embryos were harvested, which had fifteen blastocysts and five morulas.

收集到20枚杂交胚胎，其中囊胚15枚，桑椹胚5枚。

Methods The B6D2F1 hybrid mouse oocytes were parthenogenetic activated with strontium chloride(SrCI2) and cytochalasin B. The parthenogenetic blastocysts and morulas were seeded on MEF feeder respectively to examine the primary ICM appearance.and compare the derivation rate.

采用氯化锶联合细胞松弛素B激活B6D2F1杂交小鼠卵母细胞，所获得的囊胚与桑椹胚分别用于孤雌胚胎干细胞的建系，观察两者的建系成功率。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。