病毒病一直是大白菜生产的严重威胁,目前尚无免疫的或高抗病毒病的大白菜品种。然而,不同品种对病毒病的抗性有差异,一般色泽深者较色泽浅者抗病。我们诱导西瓜、甜瓜、黄瓜多倍体的结果表明,多倍体植株叶肉组织增厚、叶绿素含量高、叶片色泽浓,抗病性也较强。因此,开展多倍体育种,有可能获得抗病的大白菜品种。 Virus disease has been a serious threat to the production of Chinese cabbage, there is no immune or highly resistant to disease virus cabbage varieties. However, the resistance of different breeds to virus diseases is different. Generally, those with darker color are more resistant to disease. We induced watermelon, melon, cucumber polyploid results show that polyploid plant leaf tissue thickening, chlorophyll content, leaf color, strong resistance. Therefore, to carry out polyploid breeding, it is possible to get resistant varieties of Chinese cabbage.