Genetic Mosaics and Chimeras: Implications in Biotechnology
Genetic Mosaics and Chimeras: Implications in Biotechnology
复制标题
DOI：
10.1007/978-3-662-02636-6_3
复制
发表时间：
1990
期刊：
影响因子：
--
通讯作者：
M. Marcotrigiano
中科院分区：
文献类型：
--
作者：
M. Marcotrigiano
遗传嵌合体是由两种或两种以上基因型的组织组成的植物。它们不应与植物杂种相混淆，后者只有一种基因型;一种基因型是受精后重组的产物。镶嵌可以自发产生，也可以用化学或物理诱变剂诱导。在诱变的植物中，大多数突变体区段出现在茎尖之外（即，“额外顶端镶嵌”，由Bergann 1967描述）。
Genetic mosaics are plants which are composed of tissues of two or more genotypes. They should not be confused with plant hybrids, which possess only one genotype; a genotype which is the product of recombination following fertilization. Mosaics can arise spontaneously or can be induced with chemical or physical mutagens. In mutagenized plants most of the mutant sectors arise outside the shoot apex (i.e., “extra-apical mosaicism”, described by Bergann 1967).