Nevertheless, it is an easier regeneration from leaves of plants in vitro.
而以试管苗的叶片为外植体进行再生则相对容易；
This paper mainly discusses three topics as follows:1) Origin of haploids in higher plants, 2) Genetics of haploids, 3) Application of in vitro induced haploids.
本文讨论下述问题：1）高等植物单倍体的起源，2）单倍体的遗传学，3）离体诱导单倍体的应。
These experimental results showed that the effect of Nordy on human pulmonary adenocarcinoma cell line A549 in vitro was similar to that of NDGA extracted from plants.
上述实验结果表明，诺帝对人肺腺癌细胞系a549体外生长作用的影响与我们既往使用的植物提取物ndga的作用相似。
As a result, an in vitro zygotic embryogenesis system was build up, in which single tobacco zygotes could develop into fertile plants via embryogenesis or organogenesis under optimal condition.
通过培养条件的优化，使烟草合子在体外通过器官发生途径与胚胎发生途径两种方式再生可育植株，从而创建了烟草合子的体外胚胎发生系统。
The stem segments of Cerasus humilis Bunge with axillary bud were used as explant in this experiment and the natural regenaration plants were obtained in vitro culture of explants.
本试验以欧李当年生嫩枝上带有腋芽的茎段为外植体进行离体组织培养，获得了正常的再生植株。
Rice plants can be regenerated from the in vitro embryo treated by exogenous plant DNA in the experiment.
本试验用外源植物DNA处理水稻离体胚，并获取胚的再生植株。
Methanol crude extracts from 19 different species of plants were subjected to an in vitro bioassay to kill psoroptic mange acquired from naturally infected rabbits.
通过体外杀虫试验观察了百部等19种植物甲醇粗提物对兔痒螨的杀灭活性。
Using field-grown plants of lines and F1-F2 hybrids of barley as experimental materials, a procedure of microspore culture in vitro with high regeneration was established by technique optimization.
以大麦F1、F2代为供体材料，通过技术优化，建成了大麦小孢子培养高频再生技术程序。
VA , a anti viral agent from plants, could inactivate TMV in vitro , when it was mixed with TMV and inoculated by means of half leaf. The inhibition rate of necrotic local lesions was 80.0%.
用植物源抗病毒制剂VA与烟草花叶病毒（TMV）混合，经枯斑半叶法接种，结果证明，VA对TMV有较强的体外钝化作用，体外钝化后的枯斑抑制率为80 .0 % ；
The disease incidence of in vitro inoculated leaves of transgenic sugar orange was reduced about 55% and 3 to 5 days later to appeared the typical citrus canker symptoms then the control plants.
离体叶片接种的发病率平均可降低55%左右，整片叶片开始发病的时间比糖橙对照可以推迟3- 5天。
An efficiency and stable regeneration system in vitro and genetic transformation system for the commercial strawberry varieties were developed, and transgenic plants were obtained.
建立草莓主栽品种高效、稳定的离体再生体系和遗传转化体系，获得了转基因植株。
An efficiency and stable regeneration system in vitro and genetic transformation system for the commercial strawberry varieties were developed, and transgenic plants were obtained.
建立草莓主栽品种高效、稳定的离体再生体系和遗传转化体系，获得了转基因植株。
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