体细胞无性系变异发生在组织和胚胎的培养，即使没有基因改造，但基因改造往往使情况变得更糟。
Somaclonal variation occurs in tissue and embryo culture even without genetic modification, but genetic modification often makes it worse.
来自抗病无性系的愈伤组织也表现抗病。 愈伤组织抗病性表达受培养基的激素浓度及比例、病原菌的接种量和接种温度影响较大；
The expression of poplar disease resistance in callus tissues is greatly affected by concentration of auxins and cytokinins in the medium, inoculum density and temperature.
体细胞无性系变异是继花粉和花药培养之后的又一种实用化的细胞工程育种新方法。
Somaclonal variation breeding was a new applicable method of cell engineering under breeding after pollen and anther culture.
自1993年以来，试验已获得用花药培养的花粉单倍体植株和用未授粉子房培养产生的愈伤组织无性繁殖系。
The paper reports the results of the study since 1993. The haploid plant from the culture of anthers and the clone of ovary without pollination have been obtained.
经过两年多(15个世代)的继代培养，建立了党参体细胞无性系。
Somatic clones were established after 15 generations of subculture for more than two years.
本研究结果表明，可以用组织培养技术，快速繁殖经过选优的柠檬桉优良无性系。
This study indicates that lemon eucalyptus may be propagated via tissue culture, a technique useful for rapid propagation of selected clones.
本试验共测定了54个短周期桉树无性系在人工气候培养室中的低温胁迫伤害指数和死亡率。
In a controlled chamber stress experiment, we tested the damage index and mortality of cuttings caused by low temperature of 54 short-rotation eucalypt clones.
本试验共测定了54个短周期桉树无性系在人工气候培养室中的低温胁迫伤害指数和死亡率。
In a controlled chamber stress experiment, we tested the damage index and mortality of cuttings caused by low temperature of 54 short-rotation eucalypt clones.
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