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(一)茶花突变的概念及突变育种现状常有人问我,为什么有的茶花植株会偶尔开出多色的花朵?为什么有些单一纯色的品种有时会出现一些带有白色斑块的花朵?为什么有的品种开出的一些花朵有异于原品种?为什么有的茶花叶片会出现黄色斑点或条纹或者叶形发生了变异?所有这一切实际上都是茶花突变的表现。突变是植物体受到外部刺激或环境胁迫而引起某部位性状上异常于其他部位的一种现象。从细胞内部看,突变是染色体 DNA 链某些活动的跳跃基因,从一个位置跃到控制色
(A) the concept of Camellia mutation and mutation breeding status I am often asked why some Camellia plants occasionally out of multicolor flowers Why some single-color varieties sometimes appear with some white plaque flowers Why Some varieties of flowers out of the original varieties are different? Why some Camellia leaves appear yellow spots or stripes or leaf-shaped variation? All this is actually a manifestation of the Camellia mutation. Mutation is a phenomenon caused by external stimuli or environmental stress caused by plant parts abnormalities in other parts. From the inside of the cell, mutations are some of the jumping genes in the chromosomal DNA chain, jumping from one position to the control color