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果树为什么要用嫁接繁殖

更新时间: 2020-08-15 00:00:00     

果树一般都是复杂的杂合体,在有性生殖细胞形成过程中,由于细胞的减数分裂,基因不可避免地要发生分离和重组,这样形成的受精卵的基因型是多种多样的,从而导致后代发生变异,不能保持原品种的优良性状,而通过嫁接可以保持原品种的优良性状。

关键词: 果树 为什么 嫁接 繁殖

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