The experiment was carried out with six-group oppositifolious and alternate sister-lines through oppositifolious character transferring, initially analysing their differences in chromosomal karyotype with the method of essential balm.

• 摘要本文利用对生性状转育获得的六组对生和互生姊妹系，通过风油精法染色体制片，首次研究了对生玉米与互生玉米的染色体核型差异。