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四、禾谷类作物体细胞变异 的分子遗传学基础 禾谷类作物体细胞变异的另一主要因素就是分子水平上发生的基因变化,这里通称为分子遗传学上的变异,包括点突变,基因扩增和丢失,转座子活化,核外基因组重排等。现分别阐述于下。
Fourth, the molecular basis of cereal plant somatic mutation genetic basis of cereal crop somatic mutation is another major factor in genetic changes occur at the molecular level, here referred to as molecular genetic variations, including point mutations, gene amplification And loss, transposon activation, extranuclear genome rearrangement and so on. Now elaborated below.