1. Establishment of embryogenic cell suspension cultures in sweet potato was studied.
对甘薯胚性细胞悬浮培养系的建立进行了研究。
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2. The substance are consists of: 1. initiation and maintenance of embryogenic calli;
其内容包括：（1）胚性愈伤组织的诱导与保存；
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3. Prolonged starvation and aging might lead to rejuvenation of embryogenic potential.
长期的饥饿和衰老可以导致胚胎发生能力的复壮。
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4. In Citrus, the embryogenic calli consisted of embryogenic and non-embryogenic cells.
长期继代培养的柑橘胚性愈伤组织由胚性细胞和非胚性细胞组成。
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5. The results indicated that embryogenic callus was the best material for observed chromosome.
结果表明，胚性愈伤组织是棉花染色体观察的最佳材料。
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6. Many embryogenic calli were produced by subculture of calli induced from mature embryo of rice.
从水稻成熟胚诱导出的愈伤组织经继代培养后可以产生大量的胚性愈伤组织。
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7. The embryogenic cells were characterized by large nucleus, dense cytoplasm, abundant organelles.
胚性细胞核大，质浓，富含各种细胞器。
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8. On the contrary, the non embryogenic callus was loose in texture, rough in surface, watery and white in color.
而非胚性愈伤组织质地松散有水渍状、表面粗糙、多呈白色。
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9. Somatic embryos could be induced after the embryogenic calli were transplanted on somatic embryo induction medium.
胚性愈伤组织转移到体细胞胚诱导培养基中可诱导出体细胞胚。
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10. The results showed that the structure differences between embryogenic callus and non-embryogenic callus were distinct.
结果表明，非胚性愈伤组织和胚性愈伤组织在表面结构上存在着明显的差异。
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11. The effect of genotype on the rate of induction, growth and embryogenic callus initiating were different significantly.
小麦成熟胚愈伤组织的诱导率、生长率及胚性愈伤组织发生率的基因型效应有显著差别。
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12. Rice chitinase gene was transferred into immature embryogenic calli of wheat using PDS1000/He particle delivery system.
利用PDS10 0 0 /氦气基因枪将水稻几丁质酶基因导入小麦幼胚盾片愈伤组织。
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13. Results indicated:1) Induction of somatically embryogenic callus was best when shoot and root tips were used as explants.
适宜诱导大蒜胚性愈伤组织且生长正常的外植体为茎尖和根尖。
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14. In the cells of non-embryogenic calli, ATPase located in vacuoles and involved in the function of the hydrolysis of vacuole.
非胚性愈伤组织细胞的ATP酶定位于液泡，与液泡的水解功能有关。
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15. The results showed that the levels of endogenous phytohormones in embryogenic calli were higher than those in non-embryogenic calli.
结果表明，龙眼胚性愈伤组织中内源激素含量比非胚性愈伤组织高；
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16. Embryogenic callus and somatic embryos could be directly obtained on the medium only with ZT, but it was influenced by explant sources.
二是先诱导获得愈伤组织，再经继代培养获得胚胎发生。
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17. Synchronized embryogenic cultures at different developmental stages were obtained by controlling 2,4-D concentration and developmental time.
通过对2，4-D浓度及生长发育时间的控制获得了高度同步化的各发育阶段体胚材料。
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18. The present paper analysed two key procedures for rapid establishment of embryogenic cell suspension cultures derived from barley mature embryo.
本文分析了从大麦成熟胚培养快速建立胚性悬浮细胞系的两个关键步骤。
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19. Regenerated plantlets were obtained in embryogenic cell suspension culture from embryogenic callus of stem slice in Hedychium coccineum Buch-Ham.
以红姜茎尖薄片胚性愈伤组织为材料建立了胚性细胞悬浮系，并获得了再生植株。
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20. Ultrastructural changes in rice embryogenic suspension cells cryopreserved by vitrification were assessed using transmission electron microscopy.
用透射电镜技术研究了水稻胚性悬浮细胞玻璃化冻存过程中细胞超微结构的变化规律。
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21. Using all the methods mentioned above, an efficient and stable transformation system of embryogenic calli of elite inbred line R18 was established.
通过以上各种条件的优化，本文建立了一套较为高效的玉米优良自交系R18转化及再生系统。
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22. Under the condition of suspension culture, cell cluster were formed first, and then one or several embryoids were induced from embryogenic cultures.
在悬浮培养条件下，杨树细胞先形成细胞团，再由一些胚性细胞团发育形成一个或几个胚状体。
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23. Using embryogenic calli from young embryos as explants, bean chitinase gene was transferred into spring wheat plants by microprojectile bombardment.
利用基因枪法，以菜豆几丁质酶基因转化小麦幼胚愈伤组织。
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24. The dynamic changes of some biomacromolecules were measured in the process of somatic embryogenesis from embryogenic callus in longan(Dimocarpus longan Lour. ).
测定了龙眼胚性愈伤组织体胚发生过程中若干生物大分子的动态变化。
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25. The main results were described as follows: 1 Initial inducing embryogenic callus and globular embryos had super regeneration capacity than other stage embryos.
主要结果如下：1、起初诱导的胚性愈伤组织及处于球形期的体胚，再生能力强于其它发育时期的体胚。
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26. Improving microspores embryogenic ability and plantlet regeneration ability from microspore-derived embryos is the key of isolated microspores culture technique.
胚胎发生能力和再生植株转化率是游离小孢子培养技术的关键问题。
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27. Then embryogenic cell divided into two cells, which sequentially differentiated through multicell proembryo, globular, heart-shaped and cotyledonary embryo stages.
胚性细胞分裂产生两个细胞，进而分化发育成多细胞原胚、球形胚、心形胚及子叶胚。
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28. Then embryogenic cell divided into two cells, which sequentially differentiated through multicell proembryo, globular, heart-shaped and cotyledonary embryo stages.
