Abstract: [Objective and Metnod]The study was carried out to observe the botanical and biological characters of thomson seedless bud variation and analyze young leaves by RAPD,using thomson seedlings as the control.[Result]There were different variations in bud variation of botanical characters.It was found that there was a bud variation with tetraploid in the test.[Conclusion]Through RAPD analysis, by using 470 random 10-alkali primers, RAPD polymorphism were detected from 30 samples. The polymorphism information could be provided with 3 random primers.

摘要： [目的]了解芽变植株的植物学特性及遗传背景.[方法]以普通无核白做对照,对其10个芽变株系的生物学和植物学特性进行观测,并对其幼叶进行RAPD分析.[结果]芽变株系在植物学特征上存在不同程度的变异,主要体现在果实性状上.[结论]初步发现1株4倍体芽变.通过RAPD分析,采用470个10碱基随机引物进行RAPD多态性检测,共筛选出能产生多态性标记的RAPD引物3个.