Somatic mutation, a main biological phenomenon of citrus and other fruits, is often used for breeding as a major variation source. Spontaneous mutations often occur in citrus.

体细胞突变是柑橘等果树比较常见的生物学现象，也是品种选育，即芽变选种的主要变异来源。

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Thus, the somatic cell variation in combination with physical and chemical mutagenesis can be considered as one approach to improve fruit crops and have achieved success in some fruit crops.

体细胞变异结合物理化学诱变法可被视作改良果树作物的一种手段，并且在一些果树作物中获得了成功。

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Through gene transferring and somatic hybridization, cold-tolerant varieties have been obtained and the exploitation of somaclonal variation of some crops also succeeds.

采用体细胞融合、转基因技术等手段已经培育出了一些耐冷的品种，无性系变异的利用也已经在一些作物上取得成功。

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