而对于多倍体生物，如体细胞中每条染色体具有三个或三个以上的拷贝，二体或双体就是一种非整倍体状况。
For organisms that normally have three or more copies of each chromosome (those that are triploid or above), disomy is an aneuploid chromosome complement.
植物体细胞胚发生的机理研究和多倍体诱导的技术优化一直是植物分子及细胞生物学中的两个热点问题。
In recent years, the study of development of plant somatic embryo and technique of polyploid induction have become two important subjects in cytobiology and molecular biology.
多倍体的形成在生物进化过程中占有重要的地位，但是我们对其多倍化后基因组究竟发生了哪些变化还知之甚少。
Polyploid formation has played a major role in the evolution of many plant and animal genomes, however, surprisingly little is known for us what happens to genomes in polyploidy.
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